Analog/Digital If Troubleshooting; What You Will Find In This Chapter - Keysight n9020a Service Manual

Keysight X-Series Signal Analyzers
N9020A MXA Signal Analyzer
Service Guide
6

Analog/Digital IF Troubleshooting

What You Will Find in This Chapter

The following information is presented in this chapter:
1. Theory of operation of the IF section.
2. Isolating the cause of a hardware problem by verifying the functionality of
The analyzer can have one of three sets of IF hardware installed. The standard
25 MHz BW IF hardware supports analysis bandwidths up to 25 MHz. The
optional 40 MHz BW IF hardware supports analysis bandwidths up to 40 MHz.
The 40 MHz IF hardware is installed if any of the following options are installed:
— B40, 40 MHz Analysis Bandwidth
— MPB, Microwave Preselector Bypass
— DP2, Digital Processor & 2 GB Capture Memory
The ≥ 85 MHz BW IF hardware supports analysis bandwidths up to 160 MHz. It
also includes the 40 MHz BW IF hardware.
The following sections provide for each assembly a description of how the
NOTE
assembly works and then gives information to help you troubleshoot the
assembly. Each description explains the purpose of the assembly, describes
the main components, and lists external connections to the assembly.
This following sections are found in this chapter:
assemblies in the IF section signal path.
25 MHz BW IF Section
A2 Analog I.F. Assembly Description on page 232
A2 Analog I.F. Assembly Theory of Operation on page 233
A2 Analog I.F. Troubleshooting on page 236
A3 Digital I.F. Assembly Description on page 243
A3 Digital I.F. Assembly Theory of Operation on page 244
A3 Digital I.F. Troubleshooting on page 246
40 MHz BW IF Section
229