Keysight N5290/1A Service Guide 4-23
N5290/91A Troubleshooting
N5292A Test Controller Troubleshooting
Figure 4-13
Location of the A2 LOPA, A3 LODA, and A4 Phase Compensation Boards
Verifying the A2 LOPA (LO Preamplifier)
This procedure verifies the LO preamplifier PC’s port 1 through port 4 behavior.
1.
Power down the test set and remove the outer cover. Refer to Chapter 7
and
“Removing the Cover” on page 7-8
2.
Verify, if the LOPA J61 the cable connector is seated correctly, else power
down, and reconnect the J61 cable.
3.
Verify the LOPA port 1 thru port 4 (4-port only) LEDs are OK.
4.
Verify the power out one of the LOPA ports. It should measure ~0 dB out of
either port. If the power is not correct, replace the LOPA board. Refer to
“Removing and Replacing the A2–A4 Boards” on page 7-14
.
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 ...