Sensors 7

Question 1

What is the radar hazard area for exposed personnel and refuelin gvehicules?

Answer 1

100 feet even in Dummy Load

Question 2

What are the RADAR inputs?

Answer 2

1. IRU provides heading, G/S, pitch+roll for antenna stabilization
2. Fix button and keyboard allow inputs or target coordinates+altitude.
3. NTSC receives video input from the RADAR

Question 3

What are the RADAR outputs?

Answer 3

1. Control signals from the CDU to the RADAR via the RRIU
2. Video display, radar range and mode, and fix information to the LCD via the NTSC
3. Cursor position to the DID via the ATSC

Question 4

What to do when having a Fault indicator

Answer 4

a. Look them up in the checklist
b. Record it and report it to maintenance
c. HOT = SPCU is overheating.

Question 5

PRESSURE=

Answer 5

waveguide pressure is below 14.5 PSI, still ok but arcing can occur at high altitude

Question 6

LVPS=

Answer 6

low voltage power supply in the R/T is defective

Question 7

AFC=

Answer 7

loop which keep the R/T oscillator tuned is not functioning

Question 8

VSWR=

Answer 8

antenna voltage standing wave radio is out of tolerance

Question 9

MIXR=

Answer 9

R/T mixer diode current is out of tolerance

Question 10

TXPR=

Answer 10

Tx output power is out of tolerance

Question 11

ELEV=

Answer 11

Antenna elevation servo loop is faulty

Question 12

AZIM=

Answer 12

Antenna azimuth servo loop is faulty. Antenna scan has stopped

Question 13

+5V
+15V
-15V

Answer 13

the….V DC is out of tolerance

Question 14

SPC=

Answer 14

SPCU isn’t functioning

Question 15

PRF=

Answer 15

SPCU is not generating the Tx trigger

Question 16

HOT=

Answer 16

SPCU is overheating

Turn it off via the RADAR power switch located on the co-pilot side and inspect the computer cabinet for smoke/fire.