Keysight N5290/1A Service Guide 4-25
N5290/91A Troubleshooting
N5292A Test Controller Troubleshooting
Figure 4-14
Verifying the A3 LODA LEDs
Verifying the A4 Phase Compensation Board
1.
Verify J54 cable connector is seated correctly, else power down and
reconnect.
2.
Disconnect the suspect semi-rigid cable from suspect port (J5, J6, J7. or
J8). Connect a thru cable on the suspect port and verify the change in
power level. If power is now correct or better (
>
1 dB increase in power).
The A4 phase board is faulty and should be replaced. Refer to
Head Stability Check
Use this check to verify the stability of a millimeter head.
A nominal change in power of
≤
1 dB is expected, when a thru cable is
installed and when the A4 phase compensation board is working correctly.
Summary of Contents for N5222B
Page 3: ...3 ...
Page 4: ...4 ...
Page 10: ...6 Keysight N5292A User s and Service Guide Contents ...
Page 28: ...1 18 Keysight N5290 1A Service Guide Safety and Regulatory Information Site Preparation 1 ...
Page 86: ...3 50 Keysight N5290 1A Service Guide System Tests and Adjustments Adjustments 3 ...
Page 128: ...5 10 Keysight N5290 1A Service Guide Theory of Operation Theory of Operation 5 ...
Page 225: ...Installation Note Xxxxx xxxxx 3 ...