142 Keysight N9038A MXE Service Guide
Input Selection & Level Control
Input Selection & Level Control Section Troubleshooting
Attenuation Selection
20.
Turn on the Marker Delta function of the spectrum analyzer being used.
21.
Change the A9 Attenuator A setting to 2 dB by pressing
AMPTD
,
Attenuation
,
Mech Atten
,
2 dB
.
22.
Verify that the signal level on the spectrum analyzer drops by 2 dB from
where it was, as shown in
If the signal level is incorrect the most likely cause of the problem is the A9
Attenuator A assembly itself. However, before replacing an A9 Attenuator
A assembly for any failure, refer to
Chapter 8, “Front End Control.”
for
information on how to verify the control signals to it.
Figure 4-8
A9 Attenuator A
−
2 dB
23.
Change the A9 Attenuator A setting to 4 dB by pressing
AMPTD
,
Attenuation
,
Mech Atten
,
4 dB
.
24.
Verify that the signal level on the spectrum analyzer drops by 4 dB from
where it was, as shown in
If the signal level is incorrect the most likely cause of the problem is the A9
Attenuator A assembly itself. However, before replacing an A9 Attenuator
A assembly for any failure, refer to
Chapter 8, “Front End Control.”
for
information on how to verify the control signals to it.
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 ...
Страница 354: ...354 Keysight N9038A MXE Service Guide Analog Digital IF A3 Digital I F Troubleshooting ...
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Страница 407: ...Keysight N9038A MXE Service Guide 407 Block Diagrams Block Diagrams N9038A RF Input Option 503 508 526 Block Diagram ...
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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 ...
Страница 589: ...608 Keysight N9038A MXE Service Guide Assembly Replacement Procedures Motherboard Assembly Figure 18 57 Bottom Screws ...
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Страница 643: ...662 Keysight N9038A MXE Service Guide Instrument Software Software Updates ...
Страница 741: ...760 Keysight N9038A MXE Service Guide Tests Intermittent Unsteady Drifting Disturbances ...