MAINTENANCE MANUAL
IFR 6000
2-2-3
Page 60
Aug 1/06
(31) TCAS Measurement – Interrogation Frequency
TEST EQUIPMENT: ATC-1400A
Frequency Counter
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 21.
TCAS Measurement – Interrogation Frequency Test Connection
Figure 21
2. On the ATC-1400A, set RF output to –10 dBm, CW.
3. Set frequency (in MHz) from 1029.90 to 1030.10, step = 50 kHz respectively.
4. At each setting, record the frequency displayed on the Frequency Counter.
5. Set up the ATC-1400A as follows:
FREQ/Function Select: 1029.9 XPDR
XPDR Mode: C
RF LEVEL Control: −10dBm
CW/NORM/OFF: NORM
PRF: 235
PRF/Squitter: ON
Set other toggle switches to OFF/CAL position
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