334 Keysight NFA Series Noise Figure Analyzers Service Guide
Service and Diagnostics Menus
Overview
Controlling Access
There are two levels of service and diagnostics capabilities:
1. “Regular access” to diagnostic capabilities that everyone is allowed
access. Care may be required to use a feature appropriately. This is the
“Diagnostic” type of Service capability defined above.
2. “Secure service access” to the Service menu. This prevents the casual user
from accessing and using these features. It is intended to provide this
access to Keysight Service Centers or any customer who purchases the
Service Guide. The “Service Functions” type of Service capability is
defined above.
To access secured service capabilities the technician is required to enter a
specific numeric Service Code that is controlled by the instrument software.
The Service Code is defined to be easily entered via the front panel; an external
keyboard or mouse will not be required. Once access has been gained, it
persists within the execution of the instrument application. If the user exits the
instrument application, they must re-enter the Service Code to gain access.
The Service Diagnostic menus are split into two separate locations for the
Multi-touch user interface. They are available through the System ->
Service menu and under the SA mode Measure Setup menu. Both menus
require that you first login via the System -> Service menu.
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