Keysight N9038A MXE Service Guide 241
RF Downconverter Section
RF Downconverter Section Troubleshooting
Figure 6-11
A11 RF Switch / High Band Preamp - High Band Preamp Signal Path
If the change in the signal level is:
—
The correct level
Proceed to the next step
—
Lower than expected
The most probable cause for the failure is a bad A11 RF
Switch / High Band Switch
—
There is no change
Verify that the switch control lines from the A15 Front End
Control assembly are working properly. Refer to
for instructions on how to verify the
control lines.
30.
Switch the A11 RF Switch / High Band Preamp assembly back to the high
band thru signal path by pressing
AMPTD
,
More
,
Internal Preamp
,
Off
.
31.
Tune the signal generator and spectrum analyzer to any other frequency
above 3.6 GHz and repeat
32.
If the high band preamp signal path gain continues to be within the
expected values, the A11 RF Switch / High Band Preamp is functioning
properly.
33.
Reconnect W37, W38, and W39 as shown in
Содержание N9038A
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Страница 66: ...66 Keysight N9038A MXE Service Guide Boot Up and Initialization Potential Problems During Boot Process ...
Страница 130: ...130 Keysight N9038A MXE Service Guide Instrument Messages Condition Messages ...
Страница 216: ...216 Keysight N9038A MXE Service Guide RF Preselector Section RF Preselector Section Troubleshooting ...
Страница 268: ...268 Keysight N9038A MXE Service Guide L O Synthesizer A14 L O Synthesizer Assembly Troubleshooting ...
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Страница 429: ...448 Keysight N9038A MXE Service Guide Block Diagrams Block Diagrams Reference Block Diagram ...
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Страница 436: ...Keysight N9038A MXE Service Guide 455 Service and Diagnostics Menus Service Menus Figure 16 5 Alignments Menu ...
Страница 500: ...Keysight N9038A MXE Service Guide 519 Replaceable Parts Hardware Figure 17 23 Front Frame Exploded View LED Backlight ...
Страница 504: ...Keysight N9038A MXE Service Guide 523 Replaceable Parts Hardware Figure 17 26 Front Frame Exploded View CCFL Backlight ...
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Страница 741: ...760 Keysight N9038A MXE Service Guide Tests Intermittent Unsteady Drifting Disturbances ...