AR 10044393, Operating And Service Manual, Page: 27 / 30

Model 2W1000
Rev A 11
5. If the voltages in Step 4 are correct, check the voltage to the RF Assembly (A1).
6. Check the voltage on the feedthrough caps of the A1 variable gain amplifier, with the RF gain control at
maximum gain. Troubleshoot any incorrect voltages.
FL2 +30V
±
0.4V
FL3 -15V
±
0.4V
4.3.3 Low or No RF Power Output (RF Test)
NOTE: The DC Tests specified in Section 4.3.2 should be completed before conducting the RF tests specified
in the following sections.
The Model 5U1000’s typical gain response at 0 dBm input and -20 dBm input is shown in Figure 4-1 and Figure
4-2. The actual gain may vary considerably from that shown in Figure 4-
1 but should be ≥
37.0 dBm.
Figure 4-1. –20 dBm Input
Figure 4-2. 0 dBm Input