Safety Key Option Installed: The Safety Key (pause switch) is a hardware function that manually interrupts a test script, allowing operators to pause and resume a running test. It disables 2650 controller power supplies by disconnecting switching, EE/LM, and MBA from the UUT. It shuts down 48-volt switching control power to the switching modules, allowing operators to interact safely with the UUT during a test run. Available only on 2650 analyzers.
Source: NETS User Manual, Revision D, document 132-06035-0006, section 3.2.9.