Keysight NFA Series Noise Figure Analyzers Service Guide               335
Service and Diagnostics Menus
Overview
Secure service access
To access the secure service capabilities press System, Service with the 
instrument application running. At this point you will see the window shown in 
Figure 13-1. Enter the Service Code and press Login.
The Service Code is: -2061
Figure 13-1  Service Code Entry
Figure 13-2  Secure Service Menus 
(Accessed via System->Service)