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Keysight Technologies X-Series Signal Analyzers
N9038A MXE Signal Analyzer
Service Guide
8 Front End Control
What You Will Find in This Chapter
The following information is found in this chapter:
1. Theory of operation for the Front End Controller Assembly at the assembly
level.
2. Interconnections between assemblies.
3. Isolating the cause of a hardware problem by verifying the assembly
functionality.
This following descriptions are found in this chapter:
A15 Front End Control Description on page 270
A15 Front End Control Assembly Connections on page 271
A15 Front End Control Assembly Troubleshooting on page 274
Assembly Control Verification - (Option 503, 508, & 526 only) on
page 275
A9 Input Attenuator A Control - (Option 503, 508, & 526 only) on
page 277
A10 Input Attenuator B Control - (Option 503, 508, & 526 only) on
page 281
A11 RF Switch / High Band Preamp Control - (Option 503, 508, &
526 only) on page 284
A12 YTF Preselector Control - (Option 508 & 526 only) on page 288
A12 YTF Preselector Alignment on page 291
A13 RF Front End Assembly Control - (Option 503, 508, & 526 only)
on page 292
Each section describes how the assembly works and gives information to help you troubleshoot
the assembly. Each description covers the purpose of the assembly, describes the main
components, and lists external connections to the assembly.
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