AR 10051217, Operating And Service Manual

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Model 2000S1G2z8
60 Rev A
5. Check the voltage on the feed thru caps of the A1 Pre-Amp, with the RF gain control at maximum gain.
Troubleshoot any incorrect voltages.
C1
+5 V
±
0.5 V (Gain Control @ 100%)
C3 -5 V
±
0.5 V
C2 -12 V ±0.5 V
C4 +15 V ± 0.5 V
6. Check the voltages on the feed-thru caps of A3, A5, A9-A16 Driver Modules and A25-A56 Final Modules.
A3-FL1
+24V ± 0.3 V
A3-FL2 +24V ± 0.3 V
A3-FL4 -8V
±
0.3 V
4.3.9 Low or No Power Output (RF Test) (Diagram
10051819,10051526)
1. The Model 2000S1G2z8’s typical gain response at -20 dBm input and 0 dBm input is shown in Figures 4-
1 and Figure 4-2. The actual gain may vary considerably from that shown in these figures but should be
≥ 65 dBm at -20 dBm input and ≥ 63 dBm at 0dBm input.
Figure 4-1. Typical Response at -20 dBm Input