234 Keysight N9038A MXE Service Guide
RF Downconverter Section
RF Downconverter Section Troubleshooting
before any other troubleshooting is performed. The most probable causes for
this type of a problem would be that the A11 RF Switch / High Band Preamp
assembly itself is defective.
Signal Path Verification
There are three different signal paths through the A11 RF Switch / High Band
Preamp, each of which will be verified in this section. The frequency range of
each signal path and the expected signal loss or gain for each path is listed in
.
Since the instrument communicates with the A11 RF Switch / High Band Preamp assembly
through the A15 Front End Control assembly, be sure that the A15 Front End Control assembly is
initializing properly before replacing an A11 RF Switch / High Band Switch assembly for not
initializing properly.
Table 6-6
A11 RF Switch / High Band Preamp Signal Paths - Option 508 & 526
Signal Path
Frequency Range
Loss / Gain
Value
Condition
Low Band
20 Hz to 3.6 GHz
−
1.2 dB
20 Hz to 2.5 GHz
−
1.4 dB
2.5 GHz to 3.6 GHz
High Band Thru
a
3.6 GHz to 26.5 GHz
−
8.0 dB
3.6 GHz to 22 GHz
−
12.0 dB
22 GHz to 26.5 GHz
High Band Preamp
3.6 GHz to 26.5 GHz
+30.0 dB
b
3.6 GHz to 26.5 GHz
a. Option 508 and 526 only
b. Relative to thru path
Table 6-7
A11 RF Switch / High Band Preamp Signal Paths - Option 544
Signal Path
Frequency Range
Loss / Gain
Value
Condition
Low Band
20 Hz to 3.6 GHz
−
1.0 dB
20 Hz to 0.5 GHz
−
1.6 dB
0.5 GHz to 3.6 GHz
High Band Thru
3.6 GHz to 44.0 GHz
−
7.0 dB
3.6 GHz to 15 GHz
−
5.0 dB
15 GHz to 35 GHz
−
7.0 dB
35 GHz to 44 GHz
Содержание N9038A
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Страница 16: ...16 Contents ...
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 ...
Страница 406: ...406 Keysight N9038A MXE Service Guide Block Diagrams Block Diagrams Block Diagrams ...
Страница 407: ...Keysight N9038A MXE Service Guide 407 Block Diagrams Block Diagrams N9038A RF Input Option 503 508 526 Block Diagram ...
Страница 408: ...408 Keysight N9038A MXE Service Guide Block Diagrams Block Diagrams N9038A RF Input Option 544 Block Diagram ...
Страница 428: ...Keysight N9038A MXE Service Guide 447 Block Diagrams Block Diagrams LO Synthesizer Block Diagram ...
Страница 429: ...448 Keysight N9038A MXE Service Guide Block Diagrams Block Diagrams Reference Block Diagram ...
Страница 430: ...Keysight N9038A MXE Service Guide 449 Block Diagrams Block Diagrams MXE Computer 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 ...
Страница 627: ...646 Keysight N9038A MXE Service Guide Post Repair Procedures Post Repair Procedures ...
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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 ...