Checking The Receiver Group - Keysight N5221A Service Manual

Troubleshooting
Measurement System Troubleshooting

Checking the Receiver Group

Equipment Used for These Tests
Equipment Type
Spectrum analyzer
a. Refer to the IMPORTANT notice on page
signals at 7.61 MHz (analyzers with DSP version 4.0), or 7.44 MHz (analyzers with
DSP version 5.0), and 1 GHz.
For all of the following checks, refer to the block diagrams at the end of this chapter and to any of the
following that are appropriate:
• "2-Port Configuration, Option 200" on page 6-19
• "Bottom RF Cables, Standard 2-Port Configuration, Option 200" on page 6-21
• "Bottom Assemblies, 2-Port, Option 219" on page 6-43
• "Bottom RF Cables, 2-Port, Option 219" on page 6-45
• "Bottom Assemblies, Standard 4-Port Configuration, Option 400" on page 6-49
• "Bottom RF Cables, Standard 4-Port Configuration, Option 400" on page 6-51
• "Bottom Assemblies, 4-Port, Option 419" on page 6-76
• "Bottom RF Cables, 4-Port, Option 419 (Ports 1 and 2)" on page 6-78
• "Bottom RF Cables, 4-Port, Option 419 (Ports 3 and 4)" on page 6-81
Getting Ready to Test
Before checking the assemblies, you must open the analyzer.
CAUTION 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
WARNING 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.
CAUTION 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.
4-38
Model or 
Alternate Model or Part
Part Number Number
8565E
856xE
4-23. Must be capable of measuring
"Removing the Covers" on page
PNA Series Microwave Network Analyzers
a
Service Guide N5222-90001
N5221A/22A
7-6.