190 Keysight Technologies N9040B UXA Signal Analyzer Service Guide
Analog/Digital IF Troubleshooting
A2 Analog IF Troubleshooting
A2 Analog IF Troubleshooting
There are three steps to verify the A2 Analog IF Assembly.
— Measure the input power and frequency accuracy of the 322.5 MHz signal
(from the A13 RF Front End assembly)
— Measure the output power and frequency accuracy of the 22.5 MHz signal
(to the A3 Digital IF Assembly)
— Measure the 300 MHz input LO signal (from the A16 Reference Assembly)
Verifying the 322.5 MHz Input Power
1.
Turn the instrument off.
2.
Remove instrument cover. Refer to
Chapter 15, “Assembly Replacement
3.
Turn on the UXA Signal Analyzer and wait for the instrument to complete
the boot up process.
4.
Press
System
,
Alignments
,
Auto Align
,
Off
.
5.
Press
X
.
6.
Press
Input/Output
,
RF calibrator
,
50 MHz
.
7.
Press the pull down menu.
8.
Verify the 50 MHz signal is at
−
25 dBm on the analyzer display by pressing
FREQ
,
50 MHz
,
SPAN
,
1 MHz
,
Peak Search
on the UXA. The marker
readout should be 50 MHz at
−
25 dBm
±
3 dB. If this reference signal is
measuring incorrectly, see
Chapter 4, “RF Section Troubleshooting
in this service guide.
9.
To continue verifying press
SPAN
,
Zero Span
. Verify the input attenuator
on the UXA is set to 10 dB. Look near the top of the display near the center
and verify that
Atten: 10 dB
is visible. If needed change the input
attenuator by pressing
AMPTD
,
Attenuation
,
10 dB
on the analyzer.
10.
Press
Input/Output
,
RF Calibrator
,
10 MHz
.
Содержание N9040B Option 513
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Страница 138: ...138 Keysight Technologies N9040B UXA Signal Analyzer Service Guide Instrument Messages Condition Messages ...
Страница 240: ...240 Chapter 11 Hardware Options A21 Wideband Analog IF Troubleshooting Figure 11 1 Analog IF Block Diagram ...
Страница 256: ...256 Keysight Technologies N9040B UXA Signal Analyzer Service Guide Block Diagrams Block Diagrams Block Diagrams ...
Страница 306: ...306 Keysight Technologies N9040B UXA Signal Analyzer Service Guide Replaceable Parts Figure 14 2 External Hardware ...
Страница 338: ...338 Keysight Technologies N9040B UXA Signal Analyzer Service Guide Replaceable Parts Figure 14 28 Chassis ...
Страница 346: ...346 Keysight Technologies N9040B UXA Signal Analyzer Service Guide Replaceable Parts ...
Страница 502: ...502 Keysight Technologies N9040B UXA Signal Analyzer Service Guide Post Repair Procedures ...
Страница 532: ...532 Keysight Technologies N9040B UXA Signal Analyzer Service Guide Functional Tests Scale Fidelity ...
Страница 536: ...536 Keysight Technologies N9040B UXA Signal Analyzer Service Guide Instrument Software Software Updates ...
Страница 541: ...Index Index 541 Y yellow LED 48 51 yig filter see A12 YTF YTF see A12 YTF ...