4-46 Keysight N5244A/45A Service Guide
Troubleshooting
Measurement System Troubleshooting
4-
—
Receiver R3; W67 of A28
—
Receiver R4; W66 of A28
—
Receiver D; W65 of A28
2.
Disconnect the flexible cable at the suspect receiver.
3.
Connect the spectrum analyzer to the suspect receiver 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, continue testing at
Multiplexer Board” on page 4-47
.
6.
If the measured signal is missing on the R1 receiver, continue testing at
“Checking the A37 Reference Mixer Switch” on page 4-46
.
If the measured signal is missing on any receiver (other than the R1
receiver noted above) and the analyzer does not have receiver attenuators,
replace the A27 or A28 mixer brick, whichever is appropriate. Refer to
“Removing and Replacing the A27 and A28 Mixer Bricks” on page 7-40
If the measured signal is missing on the A, B, C, or D receivers and the
analyzer has receiver attenuators, continue testing at
A47, A48, and A49 35-dB Receiver Step Attenuators” on page 4-46
.
Checking the A37 Reference Mixer Switch
1.
Remove the front panel REF 1 jumper and connect a spectrum analyzer to
the front-panel REF 1 SOURCE OUT connector.
2.
If the measured signal is present, replace the A27 mixer brick. Refer to
“Removing and Replacing the A27 and A28 Mixer Bricks” on page 7-40
3.
If the measured signal is not present, replace the A37 reference mixer
switch. Refer to
“Removing and Replacing the A37 Reference Mixer
Checking the A46, A47, A48, and A49 35-dB Receiver Step Attenuators
1.
Locate the appropriate semirigid cable at the output of the receiver step
attenuator to be checked:
—
Options 219, 224, 419, and 423
—
Port 1; W98 of A46
—
Port 2; W104 of A49
—
Port 3; W100 of A47
—
Port 4; W102 of A48
2.
Disconnect the appropriate semirigid cable from the output of the step
attenuator.
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 ...
Страница 247: ...Keysight N5244A 45A Service Guide 6 59 Replaceable Parts Replaceable Parts Listings This page intentionally left blank ...
Страница 311: ...Keysight N5244A 45A Service Guide 6 123 Replaceable Parts Replaceable Parts Listings ...
Страница 313: ...Keysight N5244A 45A Service Guide 6 125 Replaceable Parts Replaceable Parts Listings This page intentionally left blank ...
Страница 323: ...Keysight N5244A 45A Service Guide 6 135 Replaceable Parts Replaceable Parts Listings This page intentionally left blank ...
Страница 343: ...Keysight N5244A 45A Service Guide 6 155 Replaceable Parts Replaceable Parts Listings This page intentionally left blank ...
Страница 363: ...Keysight N5244A 45A Service Guide 6 175 Replaceable Parts Replaceable Parts Listings This page intentionally left blank ...
Страница 472: ...8 18 Keysight N5244A 45A Service Guide General Purpose Maintenance Procedures Correction Constants 8 ...
Страница 504: ...32 Keysight N5244A 45A Service Guide Index ...
Страница 505: ...Installation Note Xxxxx xxxxx 3 ...