MAINTENANCE MANUAL
IFR 6000
2-2-3
Page 20
Aug 1/06
(12) DME Measurement - Interrogation PRF
TEST EQUIPMENT: ATC-1400A
VERIFICATION FAILURE: If any step in this procedure fails or is out of tolerance,
this indicates a failure in the Test Set. Refer to
Troubleshooting for corrective action.
STEP PROCEDURE
1. Make the connection as shown in Figure 11.2.
2. Set up the ATC-1400A as follows:
FREQ/Function Select: 1041 MHz X
RF LEVEL Control: −10 dBm
CW/NORM/OFF: NORM
DME P2 Switch: CAL
Self Interrogation: ON
Set other toggle Switches to OFF/CAL position
3. Press the SETUP key twice to display the SETUP-DME screen.
4. Verify the RF PORT shows ANTENNA. If necessary, change it to ANTENNA.
5. Set the ANT RANGE to 250ft.
6. Press the DME Key to display the DME screen
7. Set up the UUT:
CHAN: 17X
RFLVL: −64.6dBm (-2dBm)
RATE: STOP
RANGE: 0.0 nm
8. Press the RUN TEST Soft Key.
9. On the ATC-1400A, set PRF to 10, 101, 201, and 300 Hz, respectively.
10. At each PRF setting, verify the PRF value shown on the UUT is equals ATC-
1400A PRF Setting ± 2 Hz
11. Press the STOP TEST Soft Key.
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