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407 Cards in this Set
- Front
- Back
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F-15 1. What LRU amplifies and directs audio signals for use in the ICS. |
1. The ICCP.
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F-15
2. What are the ICCP’s tone generators and a synthesized voice generator used for? |
2. To generate warning tones and voice warning messages.
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F-15
3. In addition to ICS functions, what other switches and controls does the ICCP contain? |
3. The UHF communication system, secure voice system, JTIDS, and the ADF system.
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F-15
4. What function does the HOT MIC mode provide to the ICS? |
4. Allows hands-free communication between cockpit and ground crew.
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F-15
5. What function does the COLD MIC mode provide to the ICS? |
5. Disables the microphone in the respective cockpit except when radio is keyed.
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F-15
6. What F-15E component performs the function of the F-15C ICCP? |
6. The ICSCP.
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F-15
7. What LRU duplicates the controls on the rear cockpit ICSCP, with a few additional switches? |
7. The RICP.
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F-15
8. On the F-15E ICS, where are the audio tone generators and synthesized voice generator located? |
8. In the ICSCP.
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F-15
9. Where does the pilot’s comm headset plug into? |
9. The OXY COMM panel.
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F-15
10. What does the ICCP do with the audio signal coming from the OXY COMM panel or from theground check panel? |
10. The ICCP splits the audio signal into two signals.
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F-15
11. What signal is routed out of the ICCP and back to the cockpit headset to let cockpit operatorsknow if they are speaking too loud? |
11. ICS sidetone.
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F-15
12. What is the BIT capability for the communication system? |
12. An initiated BIT and a continuous BIT.
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F-15
13. What BIT checks the voice warning circuit? |
13. The ICCP initiated BIT checkout.
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F-15
14. How is the initiated BIT test activated on the ICCP? |
14. Place the BCP system select switch to COMM and pressing the initiate button.
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F-15
15. What type of BIT monitors the ICCP program memories and the system power supply? |
15. The continuous BIT.
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F-15
16. What is the indication when the ICSCP passes a BIT check? |
16. The “COMM IN TEST” disappears from the MPD/MPCD and the ASP fault indicator 56 remains black.
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F-15
17. What LRU do numerous F-15 systems depend on to amplify audio signals, internally generatewarning tones, amplify externally generated warning tones, or generate voice warning messageswhen system limits have been exceeded or unsafe conditions exist? |
17. The ICCP (F-15A through D) or ICSCP (F-15E).
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F-15
18. What LRU generates the “BINGO FUEL” voice warning? |
18. The ICCP (F-15A through D) or ICSCP (F-15E).
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F-15
19. How many times is “WARNING, FTIT OVERTEMP LEFT/RIGHT” repeated? |
19. Once, after a two-second pause.
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F-15
20. What are the frequencies of the ICCP’s three continuously running oscillators that generate theinternal warning tones? |
20. 250 Hz, 900 Hz, and 1,600 Hz.
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F-15
21. What frequency is the departure-warning tone and what rate is the tone interrupted? |
21. 900 Hz, at a 2 to 10 Hz rate.
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F-15
22. What percentage of structural overload does the overload warning system (OWS) send a toneenable signal to the integrated communications control panel? |
22. 85 percent.
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F-15
23. What voice warning is associated with the fighter data link (FDL) system? |
23. “MESSAGE-MESSAGE.”
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F-15
24. What system records all audio heard by the pilot? |
24. Videotape recording system.
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F-15
25. What F-15E component receives an FTIT overtemp signal from the left and right EDUs beforerouting the enable signal to the ICSCP to activate the appropriate voice warning “WARNINGOVERTEMP LEFT” or “WARNING OVERTEMP RIGHT”? |
25. AIU1.
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F-15
26. When is the bell tone heard? |
26. When the TF couple switch on the CAS control panel is switched from TF couple to off.
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F-15E
1. How many processing channels are in the AIU 1? |
1. Two.
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F-15E
2. Which component functions as the UFC’s primary bus controller? |
2. The AIU1A channel within AIU 1.
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F-15E
3. What type of data does the AIU use to interface with other aircraft systems? |
3. Serial.
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F-15E
4. Where is control data from the UHF radio 1 sent? |
4. AIU1A.
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F-15E
5. Where does the AIU1A route TACAN data? |
5. TACAN R/T.
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F-15E
6. Which LRU routes serial radar altitude and altimeter status to AIU1A and AIU 2? |
6. CARA R/T.
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F-15E
7. To which AIU does the EMD provide serial data? |
7. AIU 2.
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F-15E
8. Which AIU 1 channel receives analog inputs from the ILS receiver, cockpit throttle grips, and lefthand-controller? |
8. AIU1B.
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F-15E 1. In the cockpit of the F-15E, what components from the A-D models did the UFCs replace? |
1. Most of the A-D model control panels.
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F-15E
2. What LRUs do the UFCs directly interface with? |
2. AIU 1 and AIU 2.
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F-15E
3. How does the data transfer between the UFCs and the AIU set occur? |
3. Via bi-directional serial UFC data bus.
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F-15E
4. What does the UFC send the AIU by way of the UFC data bus? |
4. Key, switch, and status data.
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F-15E
5. What does the AIU set supply to the UFC? |
5. Control and display data.
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F-15E
6. What types of BIT are available for the UFC? |
6. Power-on, continuous monitor, and initiated.
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F-15
1. What is the frequency range of the UHF communication system? |
1. 225.000 MHz to 399.975 MHz.
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F-15
2. How many possible frequencies are in the UHF frequency range and how are they spaced? |
2. 7,000 frequencies spaced 25 kHz apart.
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F-15
3. What is the purpose of the power line filters? |
3. They eliminate 2,400 Hz noise (generated by the electrical power system)that interferes with the UHFsystem.
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F-15
4. Where are the two R/Ts for R1 and R2 blade antennas located for the UHF communicationsystem? |
4. They are both located under door 3R.
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F-15
5. Which component is the primary control for the radio number one on the F-15 C/D aircraft? |
5. The MCCP.
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F-15
6. Which component controls radio number two on the F-15 C/D aircraft? |
6. The ICCP.
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F-15
7. What is the purpose of the TCCP and what aircraft is it installed on? |
7. It is installed only on F-15D model aircraft. It allows the cockpit in command to have control of the UHF,ADF, TACAN and ILS systems.
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F-15
8. What is the purpose of the ICSCP on the F-15E model? |
8. It controls all audio signals to and from the headset-microphone circuits.
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F-15
9. What is the power requirement for the UHF system on both F-15C/D as well as the F-15E modelaircraft? |
9. 28 VDC.
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F-15
10. How do you select manual mode of operation on the F-15C/D model for radio number one? |
10. You simply rotate the mode select knob on the MCCP to MAN. Select the desired frequency by rotating themanual frequency selection knobs on the MCCP.
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F-15
11. What is the UHF guard frequency selected when in guard mode? |
11. 243.000 MHz.
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F-15
12. Which component would you use to select channel mode for UHF 1 on the F-15E model? |
12. Use the UFC.
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F-15
13. How many preset channels can each UHF radio store on the F-15C/D aircraft? |
13. 20.
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F-15
14. How is the squelch threshold set and who sets it? |
14. It is set by the squelch control marked MAIN on the front of the R/T unit and is only set by AIS.
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F-15
15. What is the nominal output produced by the transmitter portion of the R/T? What is the minimumoutput power? |
15. 10 watt AM output with a minimum output power of 7.95 watts.
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F-15
16. What is sidetone and what is its purpose? |
16. Sidetone is a portion of the intercom or transmitted voice signal sent back into the headset so you can hearwhat you are saying while transmitting. It gives the person transmitting positive feedback that all is “well”with their radio and helps keep their voice at a normal conversation level.
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F-15
17. How is antenna selection controlled on the F-15C/D aircraft? |
17. When R1 is activated, selection is controlled by using the three-position antenna selector switch on theICCP.
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F-15
18. What happens when the antenna selector switch is in the AUTO position on the F-15C/D? |
18. There is no connection to the antenna selector, causing it to automatically alternate between the upper andlower antennas at 70 cycles per minute. Cycling continues until an incoming signal is received ortransmission takes place.
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F-15
1. What is the VHF frequency range band? |
1. 30–300 MHz.
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F-15
2. In what frequency range does the F-15 VHF operate? |
2. 30.000–174.000 MHz.
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F-15
3. What propagation characteristic do the VHF systems share? |
3. LOS.
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F-15
4. What’s the main use for military FM radio? |
4. Communicating with Army and other ground units.
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F-15
5. Why do you need a VHF AM radio on an aircraft? |
5. Alternate link to control towers and other ground agencies.
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F-15
6. Which aircraft systems operate in the VHF spectrum? |
6. VHF AM and FM, VOR, and ILS.
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F-15
7. How many antennas does a VHF AM/FM radio need for communications and DF? |
7. Five.
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F-15
8. Which VHF systems need antenna tuning? |
8. FM.
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F-15
1. How many preset channels does the ARC-210 VHF communication system provide and whatchannel numbers are they? |
1. There are 10 preset channels (11–20).
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F-15
2. What is the ARC-210 VHF frequency range? |
2. 30.000 MHz to 174.000 MHz spaced 0.025 MHz apart.
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F-15
3. What is the purpose of the power line filter for the ARC-210 communication system for R2? |
3. There are no power line filters in the ARC-210 communication system (R2).
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F-15
4. What is the ARC-210 UHF frequency range? |
4. 225.000MHz to 399.975MHz spaced 0.025 MHz apart.
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F-15
5. How many preset channels does the ARC-210 UHF communication system provide and whatchannel numbers are they? |
5. There are 10 preset channels (1–10).
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F-15
6. What is the guard frequency for the ARC-210 communication system for UHF and VHF? |
6. 243.000 MHz when the radio is operating in the UHF and 121.500 MHz when the radio is operating in theVHF.
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F-15
7. When transmitting on the ARC-210 (R2), which position is the MIC switched pushed for UHFand VHF? |
7. Push the transmit switch forward for UHF and aft for VHF.
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F-15
8. What F-15C/D ARC-210 system component is a microprocessor controlled electronic switchingand amplifying unit and what switching functions does it control? |
8. The ICCP and it controls switching functions of R2, R1 guard channel receiver, ADF set, Antenna selector,intercommunication, and audio warning signals.
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F-15
9. Which F-15C/D ARC-210 system component contains circuitry to monitor memory parity errorand self-test the audio circuits when selected by the BIT control panel? |
9. The ICCP.
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F-15
10. Which F-15C/D component is the interconnect from the ICCP through the OXY COMM panel tothe cockpit headset and on F-15D to the rear cockpit headset? |
10. The COMM cable assembly.
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F-15
11. Which F-15E ARC-210 component controls all audio signals to and from the headset-microphonecircuits? |
11. The ICSCP.
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F-15
12. Which F-15E ARC-210 component provides volume control for cockpit audio, voice warningsand tones? |
12. The RICP.
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F-15
13. In the rear cockpit of the F-15E, which foot switch would you press to key the ARC-210UHF/VHF R2? |
13. The right foot switch.
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F-15
14. What is the difference between R1 and R2? |
14. R1 is the ARC-164 UHF radio system and R2 is the ARC-210 UHF/VHF radio system.
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F-15
15. On the F-15C/D, how can R1 and R2 be keyed simultaneously? |
15. By setting the ICCP TRANSMIT switch to R1-R2 and activating the throttle grip transmit switch forwardor aft.
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F-15
16. On the F-15D, does the front or rear cockpit control R2 preset channel and manual frequencyselection? |
16. The cockpit in command has control.
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F-15
17. Which frequencies on the F-15C/D are blocked and will not transmit? |
17. 74.800–75.200 MHz, 88.000–107.000 MHz, 118.000–136.000 MHz, and 156.000–174.000 MHz.
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F-15
18. Which functions of VHF do the cockpit in command controls? |
18. VHF/R2 enable (ON/OFF), and VHF/R2 preset channel and manual frequency selection.
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F-15
19. On the F-15C/D, if you want to use 137.000 MHz on channel 11, how would you set channel 11on the ICCP to get this desired frequency? |
19. You have to set the preset up 200 MHz above your desired frequency so you would set channel 11 on theICCP to 337.000MHz.
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F-15
20. How do you use manual mode of operation on the F-15C/D ARC-210 (R2)? |
20. Rotate the mode select knob on the ICCP to MAN, and again select the desired frequency by rotating theFREQ/JTIDS selection knobs on the ICCP.
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F-15
21. On the F-15E, what component remotely controls the VHF (R 2)? |
21. The UFC.
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F-15
22. Data entered in the F-15E UFC will be used by which cockpit for the ARC-210 UHF/VHF radio? |
22. The data last entered will be used by the radio regardless which cockpit entered it.
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F-15
23. How is frequency selection input for the F-15E ARC-210 UHF/VHF (R2) system? |
23. You input the desired VHF frequency plus 200 MHz on the UFC.
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F-15
24. On the F-15E ARC-210 UHF/VHF communication system, how do you select channel mode forVHF (R2)? |
24. Enter the UHF submenu no. 2 and press and release the right GREG-C/M key until an * is displayed next tothe preset channel displayed in the bottom UFC/rear UFC display row.
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F-15
25. In which F-15E radio systems are Have Quick AJ modes available and in which radio system arethey not available? |
25. Both UHF R1 and R2 but not the VHF portion of R2.
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F-15
26. Which F-15E preset channels are used to store word-of-day (WOD) for UHF R2 HQ operation? |
26. 20 thru 15.
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F-15
27. What must radios have identical in order to communicate in AJ mode? |
27. WOD, TOD and net number.
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F-15
28. What is the purpose of the WOD? |
28. It defines the radio’s frequency hopping pattern.
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F-15
29. What components can receive a TOD? |
29. R1 or R2 over any UHF frequency.
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F-15
30. What happens to the current UHF manual or channel frequency setting in normal mode when AJmode is selected? |
30. It becomes the net number.
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F-15
1. Where is the KY-58 unit/adapter located? |
1. Door 3R.
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F-15
2. What does the KY-58 unit/adapter provide to the operator? |
2. The capability to transmit and receive secure voice messages.
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F-15
3. Which KY-58 system LRU provides control functions and mode selection? |
3. KY-58 Control Panel.
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F-15
4. What switch position allows R1 to operate in secure speech mode? |
4. C/RAD 1.
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F-15
5. Which switch has a cover to prevent inadvertent dumping of the codes? |
5. Zeroize switch.
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F-15
6. On the KY-58, which switch position permits normal operation of the radio system? |
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F-15
7. What LRU translates received secure speech communications into plain voice signals? |
7. KY-58 unit/adapter.
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F-15
8. Which mode switch position enables reception of manually or automatically keyed variables froma transmitting station? |
8. RV position.
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F-15
9. What are positions 1 through 6 used for on the KY-58 unit/adapter fill switch? |
9. Select memory location.
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F-15
10. What operator action can drain the KY-58 unit/adapter battery? |
10. Leaving the FILL switch in the zeroize position.
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F-15
11. Why does the KY-58 processor require a battery? |
11. To retain the secure codes when power is off.
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F-15
12. What will be heard in the headset when the KY-58 system power is first turned on? |
12. A continuous beeping with background noise (system alarm).
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F-15
13. What action puts the KY-58 in a standby condition? |
13. Pressing and releasing the MIC switch.
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14. What indicates the KY-58 did not pass the alarm checks? |
14. System alarm does not stop when the MIC switch is cycled.
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F-15
15. What action will repeat the alarm checks and occasionally result in proper KY-58 operation? |
15. Cycling the control box Power switch off and back on again.
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F-15
16. When is a parity check initiated? |
16. Anytime a variable is transferred (loading a storage register) or used (enciphering or deciphering amessage).
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F-15
17. What will be heard in the headsets if a variable does not pass the parity check? |
17. A parity alarm (continuous tone).
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F-15
1. What is FDL? |
1. A data link system that transfers information at high rates. The data is encrypted to provide security, and isjam resistant to yield high reliability in a hostile RF environment. It also provides the ability to interconnectmany widespread sources and users of information.
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F-15
2. Which F-15C/D FDL component contains the controls used for modes of operation and what arethe modes? |
2. The JTIDS mode control panel. The modes include FDL operating mode, battery support mode, missionchannel selection, FDL crypto code zeroizing, and the TACAN/FDL master reset.
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F-15
3. Which FDL component are all TACAN signals are passed through? |
3. FDL receiver transmitter.
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F-15
4. Which FDL component provides operating power for the FDL R/T and TACAN R/T? |
4. FDL remote power supply.
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F-15
5. How many batteries does the FDL R/T contain and what do they provide? |
5. It holds three 3.0VDC lithium batteries. The batteries provide enough power to store the crypto codes andrun the internal clock when system power is off.
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F-15
6. Which switch on the control stick grip is used for FDL control? |
6. Castle switch.
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F-15
7. What is the purpose of the TDC and where is it located? |
7. Located on the right throttle grip and controls the acquisition symbol on the FDL display.
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F-15
8. The F-15C/D PSDP receives commands from which component as to the positioning of FDLsymbology? |
8. The CC.
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F-15
9. Nearly all of the processing related to the FDL is contained within which component for the F-15C/D and F-15E? |
9. The CC for the F-15C/D and the ADCP for the F-15E.
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F-15
10. What is the purpose of the AIU’s in the FDL system on the F-15E? |
10. They provide an interface from the UFCs and HOTAS to the ADCP for control of aircraft systems. HOTAScontrols for the FDL include the control stick grip castle switch and auto ACQ switch, throttle control TDCswitch, and hand controller switches. AIU 1 also receives an FDL LRU fail discrete that drives asp faultindicator 3 and the AV BIT fail light.
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F-15
11. Which component(s) has a CRYPTO switch which may be used to zeroize FDL crypto codes onthe F-15E? |
11. The RICP and ICSCP.
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F-15
12. On the F-15C/D JTIDS mode control panel, what is the function of the MODE selector in theHOLD position? |
12. Battery power allows retention of the initialization data and crypto variables. In this position, the cryptovariables cannot be zeroed using the CIPHER switch action. To load crypto variables, the MODE switchmust be in HOLD or OFF.
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F-15
13. On the F-15E sensor control panel, what is the function of the MODE selector in the NORMposition? |
13. Normal operating position. Allows full participation in the link 16 community. Provides full transmit andreceive ability.
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F-15
14. Which menu display is the main screen used with FDL? |
14. The situation display (SIT).
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F-15
15. Which menu display allows the aircrew to set up or modify the DTM data for their own aircraft.This data is normally loaded by the DTM during initialization? |
15. OWN DATA.
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F-15
16. What ENTER NET menu display indication means that the FDL has refined the time well enoughto receive messages, but is still unable to transmit? |
16. COARSE.
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F-15
17. What ENTER NET menu display indication means that time synchronization is complete and theFDL can both send and receive messages? |
17. FINE.
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F-15
18. How does the FDL system keep the transmission secure and jam resistant? |
The information is spread out over a wide frequency spectrum. The FDL RT will hop around on the 51possible FDL channels in a pattern controlled by the Crypto code key loaded in the FDL system.
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F-15
19. What is the net time reference (NTR)? |
19. The NTR is the first terminal, which is transmitting on the network, and its clock establishes system time.All other network participants enter the network via the NTR.
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F-15
20. List the 5 things need for the pilot to achieve FINE synchronization and fully communicate alongthe L-16 network. |
20. Properly loaded FDL TERM data, a common channel number (either mission or fighter channel), a host toestablish the NTR, time sync with the NTRs established time, and common crypto codes.
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F-15
21. When the FDL system fails, where are the failures kept for use with the computerizedfault reporting system (CFRS) for maintenance debriefing? |
21. Recorded to the DTM.
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F-15
1. What is the purpose of the localizer transmitter? |
1. It provides horizontal steering guidance (left or right of center) relative to the runway centerline.
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F-15
2. List the modulated frequencies of the localizer signal for the lobe to the pilot’s left and right. |
2. The lobe on the pilot’s left is modulated at 90 Hz. The lobe to the right is modulated at 150 Hz.
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F-15
3. What is the localizer on-course pattern? |
4. The area where the two lobes overlap which covers a field of 5° total width (plus or minus 2.5°) over thecenterline of the runway.
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F-15 4. What does glideslope provide and what is its frequency range? |
3. It provides vertical steering guidance (up or down) based on a glide path. Glideslope information isamplitude-modulated on a UHF carrier in the frequency range between 329.15 MHz and 335.00 MHz.
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F-15
5. List the modulated frequencies of the glideslope signal for upper and lower lobe. |
5. The upper lobe is modulated at 90 Hz, while the lower is modulated at 150 Hz.
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F-15
6. What is the purpose of the marker beacon? |
6. To communicate how far the aircraft is from the end of the runway.
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F-15
7. How far is the outer marker from the approach end of the runway and what is the signal? |
7. 4 to 7 miles; amplitude-modulated at 400 Hz.
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F-15
8. How far is the middle marker from the approach end of the runway and what is the signal? |
8. 3,500 ft.; amplitude-modulated at 1,300 Hz.
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F-15
9. What does the F-15C/D ILS/TCN control panel provide? |
9. On/off control, volume adjustment, and frequency selection capability.
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F-15
10. On the F-15D model, which cockpit has control of the ILS system? |
10. Only the cockpit that has command on the TCCP will be in control of the ILS system functions.
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F-15
11. What is the purpose of the marker beacon antenna and where is it located? |
11. Flush mounted in the nose landing gear door. It collects transmitted marker beacon signals and routes themto the ILS receiver.
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F-15
12. How many channels does the ILS receiver have and what are they? |
12. Three separate channels: one for the Localizer, one for Glideslope, and one for Marker Beacon signals.
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13. What is the purpose of the F-15C/D flight director adapter (FDA)? |
13. It receives raw (analog) deviation and reliability alarm signals for localizer indications, glideslopeindications, and marker beacon indications from the ILS receiver. It then converts the analog ILS signalsinto ILS digital signals and sends the digital information to the central computer, or AI.
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F-15
14. What does the F-15C/D horizontal situation indicator display in the ILS system? |
14. Localizer deviation and a warning flag if the received signal is unreliable.
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F-15
15. What does the F-15C/D attitude indicator display in the ILS system? |
15. Deviation from glideslope and localizer, as well as warning flags if the received signals are not adequate.
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F-15
16. On the F-15C/D, which switch allows ILS data to be displayed on the HUD? |
16. The ADI mode switch.
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F-15
17. How do you turn on the ILS receiver on the F-15C/D? |
17. By moving the VOL switch on the ILS control panel from the OFF position turns on the ILS receiver.
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F-15
18. What does the CC do after it processes the digital ILS information? |
18. It sends the FDA computed steering signals for application to the AI for displays to drive the vertical andhorizontal pointers, as well as the vertical pointer warning flag.
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F-15
19. List the HSI indicators used for ILS localizer steering information. |
19. The CDI bar and the course deviation warning flag.
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F-15
20. What is the horizontal and vertical pointer on the F-15C/D AI use for? |
20. The horizontal pointer is used for glideslope indication and the vertical pointer is used for localizerindication.
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F-15
21. What does the F-15E model use in place of the HSI and AI? |
21. It uses the EHSI and EADI displayed on the MPD/MPCD.
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F-15
22. What two formats are used to display ILS data on the F-15E multipurpose display system? |
22. Two formats are used to display ILS data: EADI and EHSI.
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F-15
23. How does the F-15E ILS receiver get the operating frequency? |
23. AIU No 1 receives the ILS operating frequency from the UFC and converts it into a discrete that is sent tothe ILS receiver.
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F-15
24. What signals does the ILS receiver output? |
24. Localizer deviation, validity and audio; glide slope deviation and validity; and marker beacon.
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F-15
25. What carries the audio signals used for station identification and situation information to theheadset? |
25. The localizer signal.
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F-15
26. Which F-15E component does the ILS receiver communicate with for system control and displayof system data? |
26. The AIU 1.
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F-15
27. Where does the AIU 1 receive ILS operating and frequency serial data from? |
27. The UFC or rear UFC.
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F-15
28. On the F-15E EADI, the bank steering bar (vertical pointer) and pitch steering bar (horizontalpointer) display ILS data that has been processed by which component? |
28. ADCP.
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F-15
29. When the F-15E aircraft flies over a marker beacon, what is displayed on the EADI? |
29. “MKR.”
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F-15
30. On the head-up display, what are the pitch and bank steering bars referred to? |
30. The IFD.
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F-15
1. Why does the TACAN R/T send a blanking pulse through the IB during TACAN transmissions? |
1. To inhibit the IFF system.
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F-15
2. Which component controls the operation of the F-15C/D TACAN system? |
2. ILS/TCN control panel.
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F-15
3. What TACAN component displays TACAN distance, bearing, to-from, and course deviation? |
3. The HSI.
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F-15
4. On the F-15C/D, what component receives multiplexed TACAN data from the FDA and uses thisdata to compute course deviation, course deviation warning, TO-FROM indications, and banksteering? |
4. The CC.
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F-15
5. How many channels are provided by the X/Y in the TACAN system and what is the total numberof available channels? |
5. There are 252 available channels are made up of 126 X channels and 126 Y channels.
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F-15
6. Which TACAN mode of operation is considered the passive mode and provides bearing, to-from,and course deviation information for display? |
6. Receive mode.
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F-15
7. Which TACAN mode of operation provides distance to the TACAN ground station? |
7. Transmit/receive mode.
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F-15
8. Where is TACAN information displayed on the F-15C/D? |
8. The HSI, AI, and HUD.
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F-15
9. Which TACAN mode of operation receives replies from other aircraft? |
9. Air-to-air mode.
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F-15
10. In TACAN A/A mode, what is the difference between the channels selected by the interrogatingand the replying aircraft in order to provide the IF for the TACAN R/T to process? |
10. 63 MHz.
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F-15
11. What F-15E component controls the operation of the TACAN system? |
11. Either the UFC or rear UFC.
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F-15
12. What two formats are used to display TACAN on the F-15E MPD/MPCD? |
12. The EADI and EHSI.
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F-15
13. What does the EADI on the F-15E display for TACAN? |
13. Bank steering bar information.
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F-15
14. What does the EHSI on the F-15E display for TACAN? |
14. Displays bearing, distance and time-to-go information.
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F-15
15. Which F-15E component controls the display of TACAN data on the seven MPDs/MPCDs andon the HUD? |
15. The ADCP.
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F-15
16. In receive mode on the F-15E, what component converts the TACAN data to digital data beforebeing sent on the MUX bus? |
16. AIU no. 1.
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F-15
1. What is the IFF interrogating equipment called? |
1. An interrogator-responder.
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F-15
2. What is the IFF responding equipment called? |
2. A receiver-transponder.
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F-15
3. What other equipment works in conjunction with the IFF interrogator? |
3. Radar.
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F-15
4. What IFF information can an operator observe on the scope presentation? |
4. The direction, distance, altitude, and identity of any replying aircraft.
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F-15
5. What is the interrogator’s transmission frequency? |
5. 1030 MHz.
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F-15
6. What is the transponder’s transmission frequency? |
6. 1090 MHz.
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F-15
7. Name the six different IFF modes of operation. |
7. Modes 1, 2, 3/A, C, 4 and S.
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F-15
8. What is mode 1 used for? |
8. General identification (military only).
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F-15
9. What is mode 2 used for? |
9. Personal identification (military only).
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F-15
10. What is mode 3/A used for? |
10. Traffic identification (military (3) and civilian (A) air traffic control).
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F-15
11. What is mode C used for? |
11. Barometric altitude coding (military and civilian traffic control).
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F-15
12. What is mode 4 used for? |
12. Crypto security - IFF (military only).
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F-15
13. What altitude range do mode C replies represent? |
13. –1,000 ft. to 60,000 ft. in 100-foot increments.
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F-15
14. Why would a ground operator want an I/P from a group of aircraft that are flying close togetherand replying with the same code? |
14. To single out one aircraft.
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F-15
15. Emergency replies are available in what modes? |
15. Only the SIF modes (modes 1, 2, or 3/A).
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F-15
16. What does IFF mode 1 identify? |
16. The aircraft squadron, normally.
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F-15
17. What does IFF mode 2 identify? |
17. The aircraft tail number, normally.
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F-15
18. What is IFF mode 3/A, and what does it identify? |
18. It is a combined civilian military mode with mode A being the civilian version. It provides further aircraftidentification.
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F-15
19. Which IFF mode is used for both civil and military aircraft and provides altitude data to theinterrogating system? |
19. Mode C.
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F-15
20. What is IFF mode S and what is it for? |
20. Enhanced variation of both mode 3/A and mode C (air traffic control data for more automated control of airtraffic).
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F-15
21. Which IFF mode’s pulses are a series of pulses developed using cryptographic techniques thatprovide secure identification of the aircraft? |
21. Mode 4.
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F-15
22. Where does the IFF transponder receive altitude data for mode C? |
22. The ADC.
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F-15
23. Where is the KIV-119 transponder computer located? |
23. It is mounted on the IFF transponder.
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F-15
24. Which IFF system component receives mode 4 interrogation video from the IFF transponder,determines the interrogation reliability, and codes a reply? |
24. KIV-119 transponder computer.
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F-15
25. On the F-15C/D, what are the switch positions of the IFF ANT SEL switch? |
25. Upper antenna only, the lower antenna only, or both.
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F-15
26. What results from the seat being ejected from the F-15C aircraft? |
26. The IFF seat switch puts the IFF transponder into emergency operation.
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F-15
27. Which F-15C/D IFF system switch(s) must be turned on in order to power on the transponder? |
One of the IFF control panel mode switches (M1, M2, M3/A, MC or MODE 4) must be moved to the ONor A/B positions to power on the transponder.
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F-15
28. List the F-15C/D transponder operating modes. |
28. Normal (modes 1, 2, 3/A, C, 4, and S), emergency, low sensitivity, standby, and off.
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F-15
29. What does the transponder do when in normal mode? |
29. The transponder recognizes valid interrogations for all enabled IFF modes (1, 2, 3/A, C, 4, and S).
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F-15
30. What is provided when IFF emergency operation is enabled? |
30. All normal modes (1, 2, 3/A, C, 4, and S) are automatically enabled, with normal sensitivity, even if theywere not previously enabled.
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F-15
31. What is the purpose of the IP operation? |
31. To determine the difference between transponders displaying identical coding.
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F-15
32. What is the purpose of the HOLD/NORM/ZERO switch? |
32. It controls code retention in the transponder computer KIV-119 and the interrogator computer KIV-114.
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F-15
33. On the F-15E, what IFF system operating controls does the RICP provide? |
33. Mode 4 enable, sensitivity control and emergency enable signals interface with the IFF transponder. Codezeroize/hold, code selection, mode 4 audio control and reply light control interface with the transpondercomputer.
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F-15
34. What does the F-15E UFC or rear UFC provide the IFF system? |
34. The UFC and rear UFC include 10 multifunction switches for selecting IFF submenus and modes. Thekeyboard provides entry of code characters and also has an I/P key for identification of position function.
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F-15
35. Which F-15E component supplies the IFF transponder with aircraft altitude information for modeC replies? |
35. The right ADP.
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F-15
36. What does the F-15E ADCP provide the IFF system? |
36. IFF transponder mode control, code selection, and BIT control and reporting.
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F-15
37. If ADCP to IFF transponder MUX bus communication is lost, which component controls the IFFtransponder? |
37. AIU 1 through the use of discrete signals.
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F-15
38. Which F-15E component receives fail discretes from the IFF transponder that drive ASP faultindicators and the AV BIT fail light? |
38. AIU 1.
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F-15
1. What does the IFF AAI R/T provide to the AAI system? |
1. Interrogation generation, reply evaluation, radar interface functions, monitors failures and provides systemstatus and LRU status signals to the AIUs.
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F-15
2. What does the AAI antenna group consist of? |
2. 10 dipole antennas arranged on the radar’s planner array (antenna), two power dividers, and a hybridcoupler.
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F-15
3. How are the dipoles divided? |
3. Into two sets of five antennas, one set for the sum channel and one set for the difference channel.
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F-15
4. Why are the sum and difference antennas positioned on the planar array deliberately in a way? |
4. To enable the AAI system to detect the direction of arrival of the reply signal.
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F-15
5. What is the purpose of the multifunction switch on the right throttle grip in the AAI system? |
5. It controls manual AAI interrogation initiation.
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F-15
6. What is the function of the F-15C/D AAI control panel? |
6. It contains the switches used to control the AAI system.
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F-15
7. Which F-15E component includes ten multifunction switches for selecting AAI submenu, AAImaster modes and interrogation modes? |
7. The UFC and rear UFC.
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F-15
8. Which signals are transmitted from the APX-114 to the radar system’s programmable signalprocessor? |
8. Target range, target bearing, target classification, correlate command, AAI overload, and wide targetsignals.
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F-15
9. When AAI MASTER switch on the AAI control panel in the AUTO position on the F-15C/D,what controls the challenge mode and the interrogation time-out period? |
9. The programming switches on the front of the IRE.
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F-15
10. Which F-15E component determines what combinations of modes, codes, master modes, and barsthat are interrogated when an AAI interrogation is commanded? |
10. Selections on the UFC’s submenu.
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F-15
11. How are interrogations initiated? |
11. Interrogations are initiated either manually using the multifunction switch on the throttle quadrant orautomatically by the radar data processor when radar switches to tracking mode.
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F-15
12. Explain how interrogation processing works. |
12. Pressing the multifunction switch on the right throttle grip to the IFF interrogate position initiates the AAIinterrogation. The interrogate command is signal from the multifunction switch enters interrogate controlcircuitry within the radar data processor (081 or 082). The interrogate command is sent as part of a dataword that is transmitted between the radar programmable signal processor (042 or 044) and the APX-114.Data to the APX -114 is made up of information required for interrogation and reply processing. The APX-114 tests the data word for parity (validity).
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F-15
13. What happens to IFF replies prior to display on the MICP or MPD/MPCD? |
13. They are translated into target symbology by the radar system.
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F-15
14. During BIT or following an interrogation, what does the M/4 light provide? |
14. It remains on steady to indicate that the APX-114 has not received time decoded video from the KIV afterreceiving a valid mode 4 reply.
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F-15E 1. Which NAV pod component responds to control signals based on the status of other subsystemsin the NAV pod? |
1. NAV pod power supply.
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F-15E
2. Which NAV pod component responds to the control inputs from the aircraft and reports the statusof the NAV pod to the aircraft? |
2. APCC.
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F-15E
3. Which NAV pod component controls antenna positioning, schedules radar transmissions andpreprocesses the received radar video information? |
3. Radar interface unit.
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F-15E
4. What NAV pod component uses control signals from the radar interface unit to gate and amplifythe RF input from the receiver? |
4. Radar transmitter.
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F-15E
5. Which NAV pod component broadcasts the high-power RF pulses and receives the target returns? |
5. TFR antenna/gimbal.
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F-15E
6. Which warning light illuminates if the aircraft radar altitude descends below 75 percent of theterrain following set clearance value plus a predictive variable based on negative verticalvelocity? |
6. LOW ALT.
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F-15E
7. What warning light illuminates to warn the aircrew of an obstacle appearing in the aircraft flightpath as detected by the TFR and requiring more than 2 G to clear? |
7. OBST.
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F-15E
8. Which component provides the operator interface for the radar altimeter, TFR system and NAVFLIR sensor? |
8. Sensor control panel.
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F-15E
9. What throttle grip switch provides the control and interface to enable the FLIR snap-look andlook-into-turn alternatives? |
9. Right multifunction switch.
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F-15E
10. What are the two functional subsystems of the NAV pod? |
10. NAV FLIR and TFR.
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F-15E
11. List the NAV FLIR submodes. |
11. NORM and BRST.
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F-15E
12. When in TF radar mode, what submode provides the best combination of system operationalparameters? |
12. NORM submode.
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F-15E
13. Where is the NAV FLIR active submode displayed? |
13. Next to S1 on the NAV FLIR submenu on the UFC.
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F-15E
14. What are the available NAV FLIR LOS alterations? |
14. SNAP LOOK and LOOK-INTO-TURN.
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F-15E
15. How does the LANTIRN TFR subsystem produce terrain following commands and where arethey displayed for manual and AUTO-TF modes of operation? |
15. It uses radar emissions to the ground and their return signals to produce terrain following commands andthese commands are used as steering cues displayed on the HUD, EADI and TF display.
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F-15E
16. List the modes of the TFR subsystem. |
16. NORM, ECCM, Weather (WX1 or WX2), LPI, and VLC.
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F-15E
17. Which component provides submode command to the NAV pod? |
17. ADCP.
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F-15E
18. How many types of BIT does the LANTIRN system have and what are they? |
18. The LANTIRN system has two types of BIT: periodic and initiated.
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F-15E
19. What type of failure is indicated when the MPD/MPCD displays NAV POD COMP after BIT isrun? |
19. It indicates that the pod control computer has detected a PBIT or IBIT failure.
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F-15E
1. What is the purpose of the LANTIRN targeting pod? |
1. It permits day or night delivery of IR guided AGM-65D/G maverick weapons and allows acquisition andtracking of targets for automatic handoff to the maverick missiles.
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F-15E
2. Which component supplies discrete signals to monitor BIT failures to and from the targeting podsubsystems? |
2. Advance pod control computer.
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F-15E
3. What does the RDC provide? |
3. It provides enough storage capacity to record at least three hours of FLIR digital video and serial binarydata.
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F-15E
4. Which component controls the flow, pressure and temperature of the coolant which is evenlydivided between the nose and roll section assembly and the cold plate on the APCC? |
4. Environmental control unit.
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F-15E
5. When the target pod laser is armed on the HUD, what symbol is positioned around the gun cross? |
5. A diamond symbol.
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F-15E
6. Which component gives you the capability to enter targeting pod mechanical alignment deviationerror data? |
6. UFC.
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F-15E
7. How many FOVs does the targeting pod provide the ADCP for display on the MPD/MPCD andwhat are they? |
7. It provides the following three: the WFOV, NFOV, and the ENFOV.
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F-15E
8. Which push button switch on the left hand controller commands the target pod laser to fire? |
8. The laser fire/freeze/A/A expand/maverick dome cover switch.
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F-15E
9. What LRU initiates and controls data transfer with the HUD, MPD/MPCD, and communicateswith the LANTIRN targeting pod on the 1553 MUX bus? |
9. ADCP.
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F-15E
10. At what point can the LANTIRN targeting pod’s FLIR track the target and laser designate ifrequired? |
10. After a sequence point is acquired.
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F-15E
11. How is primary steering of the targeting pod LOS completed? |
11. With the roll, pitch and inner yaw gimbals.
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F-15E
12. What are the targeting IR formats available in both A/A and A/G modes? |
12. Primary (T1) and setup (T2).
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F-15E
13. Which targeting IR format provides manual focus, electrical boresight, and gray scale options? |
13. Setup (T2).
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F-15E
14. What is the normal time for the targeting pod to achieve detector cool down once the pod powerswitch is put in STBY? |
14. Normally takes 5 to 8 minutes.
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F-15E
15. When would the targeting pod automatically mode itself to STBY? |
15. If a coolant overtemp occurs for greater than 60 seconds on the ground or if a condition causing a gimbalprotect shutdown occurs.
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F-15E
16. What is the primary reason of the targeting pod’s laser designator ranger? |
16. To provide accurate ranging and laser guided bomb illumination for weapon delivery and navigationupdates.
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F-15E 17. How does the laser determine range? |
17. Based on the last valid return it receives from a given pulse (last pulse logic).
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F-15E
18. How is the targeting pod’s laser armed? |
18. From the rear cockpit sensor control panel by putting the laser ARM switch in the ARM position.
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F-15E
19. What is the Maverick AGM-65 D/G auto handoff? |
19. This is when the Maverick AGM-65D’s or AGM-65G’s on STA 2 or STA 8 are put under control of thetargeting pod to automatically slave/slew the Maverick LOS to the target. It is this target that the targetingpod is either point or area tracking. The targeting pod can then command the Maverick to lock on to thattarget in either HOT/COLD or correlate track modes.
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F-15E
1. On what pylon is the RECCE pod mounted? |
1. A dedicated SUU-73B/A centerline pylon.
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F-15E
2. What is the purpose of the ADU-880/E pod rack? |
2. To provide a fixed mating interface between the pod and the pylon.
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F-15E
3. What is the purpose of the RECCE pod? |
3. It provides detailed ground maps for BIA and surveillance purposes. It also provides the ability to preciselygeo-locate points of interest and conduct surveillance activities day or night, in adverse weather conditions.
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F-15E
4. What items make up the self-contained AN/ASQ-236 RECCE pod? |
4. The REECE pod is a self-contained system consisting of an antenna, inertial navigation system,environmental cooling system, and a synthetic aperture radar that provides detailed maps for surveillance,coordinate generation and bomb impact assessment purposes.
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F-15E
5. What is the RECCE pod mode of operation with weight-on-wheels? |
5. SAFE mode.
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F-15E
6. How is the RECCE pod controlled? |
6. Through the MPD/MPCD.
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F-15E
7. When can a maintainer run an initiated maintenance BIT? |
7. At any time following the power-up BIT.
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F-15E
1. With what specific weapons is the data link pod used to communicate? |
1. The GBU-15 guided bomb or AGM-130 guided missile.
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F-15E
2. What does the video recorder provide? |
2. The video recorder provides recording and playback functions when the pod is powered. It also allows prerecordedtapes to be loaded for a mission and allows tapes which were recorded during a mission to be usedin debrief.
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F-15E
3. How many operating modes are there for the data link pod and what are they? |
3. Three; AUTO, MAN, and FWD.
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F-15E
4. How does the operation command data get from the aircraft to the data link pod? |
4. It is sent to the DLP on the PACS/DLP MUX bus.
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F-15E
5. Which data link pod function allows the aircraft and weapon data link to be tested before weaponrelease? |
5. TEST.
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F-15E
6. Which data link pod function allows the pod to talk to the correct weapon and has eight operatingmodes available labeled A, B, N1, N2, J1, J2, C, and D? |
6. MODE.
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F-15E
7. Which function must be selected to unlock the PSA antenna on the data link pod to allow controlof the weapon seeker by the vertical and horizontal slew commands? |
7. LOCK.
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F-15E
8. What tester would you use to check out the data link pod system or to troubleshoot it? |
8. The 224 APITS.
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|
F-15
1. What is the purpose of RWR? |
1. To receive, detect, and analyze radio frequency (RF) signals to identify threats, determine their status andlocation, and also to assign appropriate countermeasure actions for jamming management.
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F-15
2. What jamming systems does the RWR manage? |
2. The internal countermeasures set (ICMS) and countermeasures dispenser (CMD) system.
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F-15
3. What is the purpose of the TEWS control panel? |
3. To provide the operating controls for the TEWS equipment.
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F-15
4. What are the two operational modes of the RWR, and what are their functions? |
4. Combat mode and training mode. Combat enables the RWR normal PFM along with the ICMS combatmode. Training mode enables the RWR alternative PFM along with the ICMS training mode.
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F-15
5. What does the ICCP provide the RWR? |
5. Volume controls for the RWR launch and caution tones, while the TEWS LAUNCH DISABLE switchdisables the launch tone.
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F-15
6. Where does the low-band receiver processor send display data? |
6. To the TEWS display unit.
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F-15
7. What does the power supply provide to the RWR? |
7. The required AC and DC voltages used by the RWR.
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F-15
8. What is the purpose of the computer in the power supply? |
8. The computer contains the OFP, PFM, and threat tables to analyze digitized low-band and high-bandsignals in order to determine specific threats.
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F-15
9. What does the high-band receiver do with the RF it receives? |
9. It converts these signals to an appropriate IF.
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F-15
10. What do the high-band antennas provide the RWR? |
10. Each high-band antenna provides 90 of RF signal detection coverage to form a 360 receiving patternaround the aircraft. These antennas route the received RF signals to the high-band receiver.
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F-15
11. Which high-band antenna has two elements and what are the elements used for? |
11. The right-wing antenna. Both elements are used for RF detection. One is used as an elevation reference forthe direction finding function, while the second element is for direction finding in the forward rightquadrant.
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F-15
12. Where is this software loaded on the ALR-56C RWR system? |
12. The power supply.
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F-15
13. What is the benefit of excluding emitters from the threat tables? |
13. The RWR can perform a faster scan of the RF threat environment.
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F-15
14. What information does the central computer provide the RWR? |
14. Radar, TACAN, attitude, altitude, and velocity data to RWR for computation of threat location.
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F-15
15. What information does the radar provide the RWR? |
15. The radar provides antenna turnaround signal and radar signal reference. To determine if a tracking radarthreat is operating in the same frequency spectrum as our radar system.
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F-15
16. What information does the ICMS provide the RWR? |
16. A sample of the jamming RF and uses this sample to determine if the jamming signals, frequencies, andmodulation characteristics are correct.
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F-15
17. What does the BCP provide the RWR? |
17. It is used to start and monitor the BIT function of the RWR system.
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F-15
1. What is the RWR capability in the training mode? |
1. Due to using training threat table stores in the power supply, the display and response to threats is limited.
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F-15
2. What is the RWR capability in the combat mode? |
2. In using the combat threat tables, the RWR will display and respond to threats to its maximum capability.
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F-15
3. What is the function of the wide band filter? |
3. To pass unfiltered the full IF bandwidth from the high-band receiver.
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F-15
4. What is the function of the medium band filter? |
4. To provide IF bandwidth limitation by channel A and channel B filters.
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F-15
5. What is the function of the notch filter? |
5. It is enabled when there is an undesired frequency anywhere in the bandwidth.
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F-15
6. What is the function of the CW filter? |
6. It filters the IF signal.
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F-15
7. What signals are applied to the RF switches in the high-band receiver? |
7. Antenna inputs, ICMS jamming sample, RF BIT, and oscillator inputs.
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F-15
8. What happens to the received low-band RF signal in the low-band receiver processor? |
8. It is received, amplified, and converted to channel A/low-band IF. As it is routed through the receiver, it ismixed with a local oscillator signal and then the low-band/band 1 IF signal is sent to the channel B receiver,processed, and returned to the low-band receiver processor as channel B IF and SPU video.
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F-15
9. How is the pilot alerted to the presence of a threat? |
9. By caution and launch tones in the headset, and/or AI/SAM lights on the MCCP, and/or threat symbologyon the TEWS display unit.
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F-15
10. Describe the launch tone. |
10. The launch tone is interrupted or chopped.
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F-15
11. Describe the caution tone. |
11. The caution tone is steady.
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F-15
12. How is the launch tone inhibited? |
12. Depress the TEWS LAUNCH DISABLE switch on the ICCP while the tone is present.
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F-15
13. The TEWS displays unit symbol position, intensity, and flash rate (not flashing, slow, fast). Whatthreat information do these displays provide to the pilot? |
13. Threat range and relative bearing, type of threat, threat priority and age.
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F-15
1. When does initialization BIT occur? |
1. At system power up.
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F-15
2. During initialization BIT, what does the power supply test for? |
2. For failures in the CPU, PROM, and RAM.
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F-15
3. During initialization BIT, what does the low-band receiver processor test for? |
3. Failures in the data registers and commands, power supply-to-low-band receiver processor communicationfailures, low-band receiver processor-to-high-band receiver communication failures, scanning hang-ups,constant firing interrupts, and initialization pass/fail.
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F-15
4. What component performs the continuous BIT? |
4. The power supply.
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F-15
5. How does the pilot know the RWR system has recovered? |
5. The RWR fail light will be turned off.
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F-15
6. What does BIT matrix A contain? |
6. Reports for all failures detected in the current BIT cycle.
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F-15
7. What does BIT matrix B contain? |
7. Reports for those failures that have met the Double 5/7 rule and caused a latch to set. It also containsreports for failures that met the first 5/7 rule but not the second and therefore did not get confirmed.
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F-15
8. When does the high-band receiver perform automatic BIT? |
8. At the end of every other RF scan.
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F-15
9. When does the TEWS display unit perform automatic BIT? |
9. Each time the cross symbol in the middle of the scope is produced.
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F-15
10. During manually initiated BIT, what indications and BIT displays are produced? |
10. The RWR light on the BCP flashes for the period of the manual BIT program and then extinguishes if amalfunction isn’t detected. If a malfunction is detected, the RWR light illuminates steady. On the TEWSdisplay unit, the detail A is displayed for approximately five seconds, while the detail B is displayed forapproximately four seconds. The Detail B display presents the word RANCH followed by three lines ofnumbers that represent the RWR OFP, and the band 1, 2, and 3 ICMS OFP.
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F-15
11. How many failures does the BIT matrix have space for? |
11. Twenty.
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F-15
12. When are RWR failure messages transferred to the CC? |
12. If a failure has occurred that causes the RWR fail light on the BCP to illuminate.
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F-15
13. What information does the RWR BIT log provide? |
13. A coded (hexadecimal) list of the failed LRUs, tests that they failed, and how many seconds after systemturn-on they failed the tests.
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F-15
14. What information does the RWR detail BIT provide? |
14. It provides a plain text interpretation of the BIT log.
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F-15
1. Which countermeasures sets make up the AN/ALQ-135 ICMS? |
1. Band 1, band 2, and band 3.
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F-15
2. What radio frequency range does band 1 operate in? |
2. The E and G frequency band.
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F-15
3. What radio frequency range does band 2 operate in? |
3. The G and H frequency band.
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F-15
4. What radio frequency range does band 3 operate in? |
4. The H, I, and J frequency band.
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F-15
5. What do the set fail lights indicate? |
5. Indicate when a specific set (band) has failed.
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F-15
6. What ICMS information does the TEWS display unit provide? |
6. ICMS program information (during RWR initiated BIT); jammed threat is identified as being jammed(when band 3 jamming is present).
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F-15
7. What ICMS information does the MPCD provide? |
7. ICMS status on the TSD and PACS A/A display; the TEWS BIT page provides selection to view either theICMS BIT log or the detail BIT display.
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F-15
8. What is the function of the summing network? |
8. It receives RF samples from only band 1 and band 2 RF amplifiers and applies a composite output of thesesamples to the RWR high-band receiver for comparison to the initial threat data.
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F-15
9. What does the band 3 oscillator provide the forward and aft band 3 RF amplifiers? |
9. Tuning commands, amplitude and/or frequency jamming output signals, and frequency information.
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F-15
10. What does the band 3 forward RF amplifier provide? |
10. Final TWT amplification of band 3 oscillator signals, operating voltages to the band 3 oscillator, and pulseand CW RF to the magic tee and then sent to the band 3 ICMS forward up and down antennas.
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F-15
11. What is the function of the magic tee? |
11. It combines band 3 forward amplifier CW RF and pulse RF signals into a single signal, splits the combinedsignal, and sends the split signal to the forward up and forward down band 3 ICMS antennas.
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F-15
12. What is a programmer? |
12. A small matrix ROM device that provides band 1 and band 2 oscillators with predetermined programinputs.
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F-15
13. What is the function of the preamplifier? |
13. Provides initial system amplification of the received RF threat signals from the RWR high-band antennasand routes them to the band 3 oscillator.
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F-15
14. What is the function of waveguide seals? |
14. They prevent pressure loss, arcing and contamination.
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F-15
15. What does the left main landing gear WOW relay provide to the ICMS, and why is it important? |
15. When the aircraft is in flight, the relay energizes and provides an electrical ground to the ICMS oscillators.When the aircraft is on the ground, this electrical ground is absent so that the oscillators send an inhibitcommand to the amplifiers, preventing an accidental high-power RF signal transmission.
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F-15
16. What information does the central computer provide to the band 3 oscillator? |
16. Radar operating frequencies, aircraft altitude, and aircraft speed to the band 3 oscillator.
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F-15
1. How are band 1 and band 2 controlled in the auto mode? |
1. They operate as transmit only systems under the control of the RWR.
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F-15
2. What controls band 1 and band 2 during manual mode? |
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F-15
3. When should manual mode be used for band 1 or band 2 operation? |
3. During RWR or ICMS failure.
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F-15
4. What inputs does the oscillator provide to the RF amplifier? |
4. A low-power RF signal, CW and high-level modulation commands from the oscillator for automaticleveling and AM modulation.
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F-15
5. Where do the band 1 and band 2 amplifiers send an RF sample? |
5. To the summing network.
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F-15
6. How is final amplified band 1 RF signal sent to the band 1 antenna? |
6. Over a coaxial transmission line.
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F-15
7. How is final amplified band 2 RF signal sent to the band 2 antenna? |
7. It is transmitted through pressurized waveguides.
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F-15
8. What is the RWR commanded to display when the band 3 ICMS is jamming? |
8. An open X around the jammed threat on the TEWS display.
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F-15
9. When the ICMS is in standby, what percent of maximum airflow does the ECS provide theICMS? |
9. 10 percent.
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F-15
10. When the aircraft is WOW and the ICMS is in AUTO or MAN, what percent of available airflowdoes the ECS provide the ICMS? |
10. 100 percent.
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F-15
11. What malfunctions will result from a leak in the waveguide pressurization system? |
11. ASP fault indicator 25 to latch and malfunctions in the radar system.
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F-15
12. When can band 1 and band 2 intermittent BIT be performed? |
12. Only with the ICMS in the auto mode.
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F-15
13. When can band 1 and band 2 manually initiated BIT be performed? |
13. With the ICMS in the standby or auto mode.
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F-15
14. When is band 3 initialization BIT performed? |
14. When the band 3 is turned on and WOW.
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F-15
15. What is the band 3 BIT LOG? |
15. A record of faults that have occurred during any of the band 3 BIT operations.
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F-15
16. Where is the band 3 BIT LOG displayed? |
16. On the MPCD.
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F-15
1. What does the operation of the TEWS system depend on? |
F-151. The exploitation of the radio frequency environment.
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F-15
2. What information does the radar/RWR interface provides? |
2. Radar predicted transmit channels and timing.
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F-15
3. What does the ICMS do with the radar data received from the CC? |
3. Uses it to modify or raise receiver thresholds to limit reception of onboard radar transmissions.
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F-15
4. What does the desense cue provide? |
4. A performance figure of merit of the radar in A/A RWS and TWS modes.
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F-15
5. What is the purpose of Priority control? |
5. A means to control the amount of overlap allowed between the radar and ICMS in the frequency region inwhich both need to operate for full performance.
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F-15
6. What is the purpose of ATAK? |
6. It inhibits the ICMS from transmitting in either forward or aft hemispheres over predefined set of frequencyregions.
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F-15
7. When and where is the ICMS conflict cue displayed? |
7. On the radar display when band 3 is transmitting from the forward antennas within the radar frequencyrange.
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F-15
8. Where is ICMS status and activity displayed? |
8. System status and activity is displayed on the MPCD and the TEWS display unit.
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F-15
9. What are the three status colors and what do they indicate? |
9. They each indicate the status. Green indicates the band is operating without any faults, amber indicates theband is degraded but is still operating, and magenta indicates the band is not operational.
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F-15
10. What ICMS BIT information can be selected for display from the TEWS BIT page? |
10. The ICS BIT LOG, allows observation of the ICMS band 3 faults; the ICS allows observation of thereported ICMS band 3 functional failures.
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F-15
1. What is the function of the CMD? |
1. To dispense and manage chaff, IR flare, and/or other expendable countermeasure payloads.
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F-15
2. Where does the CMD receive threat information? |
2. From the AN/ALR-56C RWR.
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F-15
3. How many expendable stores magazines are mounted in each DSA? |
3. Two.
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F-15
4. What are the two methods of starting the dispense program? |
4. Automatic or manual.
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F-15
5. What are the two safety precautions that inhibit the commands to the DSA to start firing? |
5. Ground safety pins are removed and weight is off aircraft wheels.
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F-15
6. Where is CMD status displayed? |
6. On the MPCD, the TEWS display unit, and by the CMD status lights.
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F-15
7. What are the main components of the F-15 ALE-45 CMD system? |
7. The control panel, programmer, TEWS indicating lights panel, four dispensing switch assemblies, and twosafety switches.
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F-15
8. On the TEWS indicating lights panel, when does the PROGRAM light flash? |
8. During initiated BIT.
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F-15
9. What RWR component exchanges threat and display data with the CMD programmer? |
9. Low-band receiver processor.
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F-15
10. What component starts and monitors the BIT function of the CMD system? |
10. The BCP.
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F-15
11. How many types of payload can each stores magazine carry? |
11. One.
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F-15
12. How many signals/voltages are required to fire a squib, and what are they? |
12. Four; 28 VDC WOW signal from the essential bus circuit breaker panel through the energized left mainlanding gear relay number1, 28 VDC fire power signal from the essential bus circuit breaker panel throughthe DSA safety switches, 28 VDC logic power signal from the programmer, and a fire (dispense) commandfrom the programmer.
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F-15
13. How long will the CMD dispense chaff and/or flare in the AUTO mode? |
13. Until the RWR dispense command stops or the chaff and/or flare quantities reach zero.
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F-15
14. What happens when the flare jettison switch on the CMD control panel is moved to the JETTposition, the CMD ground safety pins are removed, and the aircraft is WOW? |
14. All flare and chaff will be immediately dispensed.
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F-15
15. What are the three types of CMD BIT? |
15. Full initiated BIT, initiated inventory BIT, and continuous BIT.
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F-15
16. What BIT is performed when the mode switch is placed to STBY? |
16. Full initiated BIT.
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F-15
17. When are the DSAs tested for stray voltage? |
17. During initial system turn on and full initiated BIT.
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F-15
18. What happens when a DSA detects stray voltage? |
18. The CMD BIT light illuminates and the applicable DSA ASP fault indicator will latch.
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F-15
19. What is the AN/ALM-262A supplemental test set used for? |
19. To test and troubleshoot the inventory and dispense operation of CMD.
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F-15E
1. What is used in the front cockpit on the F-15E to start a manual 1 dispense program instead of theautopilot/steering disengage switch? |
1. The trim switch on the control stick grip.
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F-15E
2. What monitors and controls CMD initiate BIT on the F-15E? |
2. Avionics interface unit number 1.
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F-15E
3. What are the three ways the aircrew can initiate a manual 1 dispense command? |
3. By pressing the trim switch on the control stick grip down and releasing, pressing the CMD dispense switchon the left throttle grip down and releasing, or pressing the CMD dispense switch on the left hand controllerforward and releasing.
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F-15E
4. How does the aircrew initiate a manual 2 dispense command? |
4. By pressing the CMD dispense switch on the left throttle grip up and releasing, or pressing the CMDdispense switch on the left hand controller aft and releasing.
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F-15E
5. How are semiautomatic dispense commands initiated when a programmed response is available? |
5. By the pilot pressing the CMD dispense switch on the left throttle grip up and releasing, or pressing theCMD dispense switch on the left hand controller aft and releasing.
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F-15E
6. How is chaff and flare dispense activity indicated? |
6. By flashing CHAFF and FLARE lights in the front and rear cockpit and decreasing stores inventories onthe TEWS display.
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F-15E
7. Where are CMD BIT failures displayed in the cockpit/rear cockpit? |
7. In the MPD/MPCD caution legend.
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F-15
1. What does the interference blanker prevent? |
1. EMI.
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F-15
2. The blanker receives blanking pulses from how many input sources with the expansion? |
2. Blanking pulses received from 13 source inputs.
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F-15
3. What other systems are integrated by the blanker on all F-15 model aircraft? |
3. AAI, IFF, TACAN/JTIDS/FDL, Radar, EWWS, RWR, and ICMS Band 3.
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F-15
4. What additional systems interface with the blanker on the F-15C/D/E model aircraft? |
4. F-15C/D integrates with the TEWS Pod, while the F-15E integrates with the LANTIRN Navigation Pod.
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F-15
5. What are the power requirements of the blanker? |
5. 115 VAC single phase, aircraft power.
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F-15
6. With ground power applied, how is the blanker powered “ON” on the F-15C/D and E? |
6. With the GND PWR control panel switch 4 in the ON position on the F-15C/D and with the GND PWRcontrol panel switch 3 in the ON position on the F-15E.
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F-15
7. What is the normal configuration for the programmer jumper plugs? |
7. Placed in the stored position unless specialized TEWS pod programming is required.
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F-15
8. Name the IBS BITs. |
8. The BIT circuits consist of the continuous BIT, initiated BIT, and fail-safe circuits.
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F-15
9. What must occur for a NO-GO memory flip-flop to set, supplying a set NO-GO? |
9. If no output pulse is present coinciding with an input pulse.
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F-15 10. What occurs when the output pulse is out of tolerance?
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10. A power supply inhibit signal is generated and sent to the power supplies to shut down portions of theblanker.
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