Keysight Technologies N5224/5A Service Manual page 119

Troubleshooting
Measurement System Troubleshooting
— "Bottom RF Cables, Standard 2-Port Configuration, Option 200" on
page 6-25
— "2-Port Configuration, Option 219" on page 6-49
— "Bottom RF Cables, 2-Port, Option 219" on page 6-51
— "4-Port Configuration, Option 400" on page 6-56
— "Bottom RF Cables, Standard 4-Port Configuration, Option 400" on
page 6-58
— "4-Port Configuration, Option 419" on page 6-87
— "Bottom RF Cables, 4-Port, Option 419 (Ports 1 and 2)" on page 6-90
— "Bottom RF Cables, 4-Port, Option 419 (Ports 3 and 4)" on page 6-93
Getting Ready to Test
Before checking the assemblies, you must open the analyzer.
Use an antistatic work surface and wrist strap to reduce the chance of
electrostatic discharge for all of the procedures in this chapter.
1. Turn off the analyzer power.
2. Unplug the power to the analyzer and disconnect all front and rear panel
connections except installed jumpers.
3. Remove the outer and inner covers from the analyzer. Refer to
the Covers" on page
Procedures described in this document are performed with power
supplied to the product while protective covers are removed. Energy
available at many points may, if contacted, result in personal injury.
4. With the covers off, plug in the analyzer and turn on the power.
Do not operate the analyzer with the outer cover removed for more than
30 minutes, as this could cause the analyzer to overheat which could
result in costly damage.
Checking the A27 and A28 Mixer Brick Receiver Outputs
Set the network analyzer for an S
GHz.
1. Locate the following flexible cables at the receiver IF outputs of the mixer
brick(s).
— 2-port models
Keysight N5224A/25A Service Guide
7-7.
measurement with a CW frequency of 1
11
— Receiver A; W61 of A27
— Receiver R1; W62 of A27
"Removing
4-43