Aeroflex IFR 4000, Maintenance Manual, Page: 102 / 211

MAINTENANCE MANUAL
IFR 4000
2-2-3
Page 60
Aug 1/04
STEP PROCEDURE
13. Follow the on-screen prompts, adjusting the Signal Generator output level to
achieve the Power Meter readings indicated on the Test Set.
CAUTION: USE CAUTION WHEN PERFORMING THE >10 W CALS AS THE
TEST SET IS NOT RATED FOR CONTINUOUS INPUT AT THESE
LEVELS. COMPLETE THESE STEPS AS QUICKLY AS POSSIBLE,
AND REDUCE THE INPUT POWER AS SOON AS POSSIBLE. DO
NOT ALLOW THE TEMPERATURE INDICATED ON THE TEST SET
CAL SCREEN TO EXCEED 35
°
C. (INPUT POWER MAY NEED TO
BE REDUCED BETWEEN HIGHER LEVEL SETTINGS TO ALLOW
THE POWER TERMINATION TO COOL.)
14. When the POWER METER CAL Sequence is complete, press the SAVE &
RETURN Soft Key to return to the MISC CAL Screen.
FM DEV
15. Press the FM DEV Soft Key to display the FM DEV CAL Sequence Screen.
16. Connect the Signal Generator to the ANT Connector. Set the Signal Generator
for 156.000 MHz at -20 dBm with FM Modulation enabled.
17. Follow the on-screen prompts and set the FM deviation on the Signal Generator
as indicated. When changing deviation levels, wait several seconds before
pressing the NEXT Soft Key to allow the Test Set to average the modulation.
18. When the FM DEV CAL Sequence is complete, press the SAVE & RETURN Soft
Key to return to the MISC CAL Screen.
19. Press the RETURN Soft Key to return to the Calibration Screen.