Troubleshooting The Rf Section (E4446A, E4447A, E4448A) - Agilent Technologies PSA Series Service Manual

Troubleshooting the RF Section (E4446A, E4447A, E4448A)

What You Will Find in This Chapter
What You Will Find in This Chapter
The following information is found in this chapter:
1. Theory of operation of the RF section for model numbers E4446A,
2. Isolating the cause of an hardware problem by verifying the
3. Block diagrams of the RF section of the analyzer.
Each section describes how the assembly works and gives information to
NOTE
help you troubleshoot the assembly. Each description covers the purpose
of the assembly, describes the main components, and lists external
connections to the assembly.
This following descriptions are found in this chapter:
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90
E4447A, and E4448A.
functionality of assemblies in the RF section signal path.
RF Section Description (E4446A, E4447A, E4448A) .............page 91
Overall Front End ....................................................................page 95
A14 and A15 Step Attenuators ................................................page 96
A21 FELOMA and A29 FELOMA/SBTX Driver ....................page 98
A19 SBTX/RYTHM Assembly ...............................................page 101
A18 YTO .................................................................................page 103
A20 Lowband ..........................................................................page 104
A13 Front End Driver ............................................................page 107
A22 Low Band Preamplifier (Option 1DS) ...........................page 108
A27 Electronic Attenuator Description (Option B7J) ..........page 109
Chapter 4