MAINTENANCE MANUAL
IFR 6000
2-2-3
Page 8
Aug 1/06
(5) Output Level Accuracy (RF I/O Port)
TEST EQUIPMENT: Power Meter
Power Sensor
Measuring Receiver
Receiver Sensor
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. Connect the Power Sensor to the Power Meter (Power REF Connector) and zero
the Power Meter.
2. Disconnect the Power Sensor from the Power Meter (Power REF Connector) and
connect the Power Sensor to the RF I/O Connector.
3. Press the SETUP key twice to display the SETUP-DME screen.
4. Verify the RF PORT shows DIRECT CONNECT. If necessary, change it to
DIRECT CONNECT.
5. Press the DIAG Soft Key to display the DME DIAGNOSTICS screen.
6. Press the SELECT Soft Key to display the DME DIAG- CW screen.
7. Set up the UUT as follows:
FREQ: 962MHz
RVLVL: -50dBm
8. Press the RUN TEST Soft Key.
9. Verify that the Measured Level equals −50dBm ± 1dB.
10. Press the STOP TEST Soft Key.
11. Change the FREQ to 1030, 1090, 1150, 1213 MHz, respectively.
12. At each frequency setting, run test and verify that the Measured Level equals
−50dBm ± 1dB at each frequency setting.
13. From the recorded levels, verify that the Flatness is ≤ 2dB.
14. Disconnect the Power Meter Sensor from the RF I/O Connector.
15. Set FREQ to 1090MHz.
16. Set up the Measuring Receiver for Tuned RF Level measurement at 1090MHz
with 3.8 Special selected.
17. Connect the Measuring Receiver Sensor directly to the RF I/O port.
18. Change RFLVL from −47dBm to −115dBm in 10dB steps, respectively.
19. At each step, run test and verify that Measured Level equals Setting Level ± 1dB
(± 2dB for levels < –95 dBm).
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