Keysight N5244A/45A Service Guide 4-47
Troubleshooting
Measurement System Troubleshooting
3.
Connect the spectrum analyzer to the open step attenuator connector. Set
the spectrum analyzer to measure a signal at 800 MHz.
4.
If the 800 MHz signal is not present, replace the receiver step attenuator.
“Removing and Replacing the A38–A41 Source Attenuators and
the A46–A49 Receiver Attenuators” on page 7-48
.
5.
If the 800 MHz signal is present, replace the associated mixer brick, A27 or
A28. Refer to
“Removing and Replacing the A27 and A28 Mixer Bricks” on
.
Checking the A24 IF Multiplexer Board
1.
Locate each of the flexible RF cables at the output receivers of the IF
multiplexer board:
—
2-port models
—
Receiver A; W69
—
Receiver R1; W72
—
Receiver R2; W73
—
Receiver B; W70
—
4-port models
—
Receiver A; W69
—
Receiver B; W70
—
Receiver C; W72
—
Receiver D; W73
—
Receiver R; W71
2.
Disconnect the appropriate flexible RF cable from the output receiver to be
tested on the A24 IF multiplexer board.
3.
Connect the spectrum analyzer to the open connector.
4.
. The measured signal on the
spectrum analyzer should be at 7.61 MHz (analyzers with DSP version
4.0), or 7.44 MHz (analyzers with DSP version 5.0), and 1 GHz.
5.
If the measured signal is present, replace the A16 SPAM board. Refer to
“Removing and Replacing the A4–A17 Boards (For analyzers with serial
numbers prefixed MY/SG/US5150 and below)” on page 7-15
6.
If the measured signal is not present, replace the A24 IF multiplexer board.
“Removing and Replacing the A24 IF Multiplexer Board” on
.
Содержание PNA-X N5244A
Страница 10: ...8 Keysight N5244A 45A Service Guide Contents ...
Страница 90: ...3 62 Keysight N5244A 45A Service Guide Tests and Adjustments Adjustments 3 ...
Страница 146: ...4 56 Keysight N5244A 45A Service Guide Troubleshooting Instrument Block Diagrams Sheet 4 4 ...
Страница 155: ...Keysight N5244A 45A Service Guide 5 9 Theory of Operation Synthesized Source Group Operation Figure 5 3 Source Group ...
Страница 174: ...5 28 Keysight N5244A 45A Service Guide Theory of Operation Receiver Group Operation 5 Figure 5 6 4 Port Receiver Group ...
Страница 175: ...Keysight N5244A 45A Service Guide 5 29 Theory of Operation Receiver Group Operation Figure 5 7 2 Port Receiver Group ...
Страница 188: ...5 42 Keysight N5244A 45A Service Guide Theory of Operation Noise Measurement Group Operation Option 029 5 ...
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