333
Keysight NFA Series Noise Figure Analyzers
Service Guide
13 Service and Diagnostics Menus
Overview
The Service capabilities described below are accessed via the Service menus in 
the System Settings Diagnostic menu and Spectrum Analyzer mode Measure 
Setup menu. The Service capabilities are intended for field service technicians. 
These technicians may be at a Keysight Service Center or at a self-maintaining 
customer site.
There are two types of Service capabilities:
1. Diagnostics - These are available to any user and will assist in initial 
troubleshooting of instrument malfunctions. Examples are the ability to 
read the mechanical relay cycles.
2. Service Functions - These are for use by the factory or field repair 
technicians, access is controlled. Examples are the ability to band lock the 
analyzer and control the DAC which sets the 10 MHz Reference frequency.