204 Keysight CXG, EXG, and MXG X-Series Signal Generators Service Guide
RF Assembly
A3 RF Assembly Troubleshooting
N5173B, N5183B
The output of this section can be measured at J2004, which is used to route
the signal to the A7 Micro-Deck assembly input for frequencies of 3.2 GHz and
above. However, since the A7 Micro-Deck will multiply the frequency of the
signal to achieve the desired output frequency, the output frequency of this
section will not match the output frequency selected by the user. To calculate
the frequency at J2004 divide the instrument output frequency by the A7
Multiplier listed in Table 10-5.
Use the following procedure to measure this output:
1. Return the instrument to a known state by pressing Preset.
2. Turn the output power on by pressing RF On/Off so that the LED below it
comes on.
3. Referring to Figure 10-4, remove semi-rigid cable W21 from A3 J2004.
Table 10-5 Synthesizer Multiplier / Divider Output Versus Output
Frequency
Output Frequency A7 Multiplier J2004 Frequency
3.2 to 5 GHz 1 3.2 to 5 GHz
>5 to 10 GHz 2 >2.5 to 5 GHz
>10 to 20 GHz 4 >2.5 to 5 GHz
>20 to 40 GHz 8 >2.5 to 5 GHz
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