TB 9-6625-2089-24
Figure 9. RF input high power - equipment setup.
(21) Adjust MEASUREMENT DEMOD VID LEVEL control for MEASUREMENT,
METER indication of 33 dBW.
(22) Set variable attenuator No. 2 dial to setting on calibration chart for 43 dB at
1090 MHz.
(23) Set signal generator output for an indication of 1 V pulse on oscilloscope CH 1.
(24) Adjust peak power meter to set reference to top of pulse as viewed on CH2 of
oscilloscope. If peak power meter does not indicate 0 1 dBm, perform b (11) through (14) below.
(25) Disconnect cable from MAIN RF IN/OUT and connect to AUX RF IN/OUT, set
DEMOD switch to DEMOD AUX and repeat (16) through (24) above for AUX RF IN/OUT.
b. Adjustments
(1) Set variable attenuator No. 2 dial to setting on calibration chart for 30 dB at
1090 MHz.
(2) Adjust signal generator output for a -2 dBm reference on peak power meter as
indicated on oscilloscope CH2.
(3) Adjust variable attenuator No. 2 dial to setting on calibration chart for 60 dB at
1090 MHz.
(4) Connect equipment as shown in figure 8, CONNECTION A.
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