AR 10046494, Operating And Service Manual, Page: 52 / 60

Model 60/40S1G18B
32 Rev A
4.3.14 Lo Band Low or No Power Output (RF Test) (Schematic
10046186)
NOTE: The DC Tests specified in Section 4.3.12 should be completed before conducting the RF tests
specified in the following sections.
1. The Lo Band (0.7-6.0 GHz) typical gain response at 0 dBm input and -20 dBm input is shown in Figure
4-1. The actual gain may vary considerably from that shown in Figure 4- 1 but should be ≥ 47 dB at
0dBm input and ≥ 50 dB at –20 dBm input. NOTE: If the overall gain is low, the amplifier chain can be
separated.
37.0
39.0
41.0
43.0
45.0
47.0
49.0
51.0
53.0
55.0
0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 6.5
Ga
in,
dB
Freq, GHz
0dBm
-20dBm
Figure 4-1. Typical Response at 0 dBm Input and –20dBm Input
2. With the W4 cable disconnected from the input of A9 Splitter, check the response from the input of A9
Splitter to the output of the amplifier.
Figure 4-2. Typical Gain Response from the A9 Splitter Input to the RF Output