HP 70427A User Manual page 261

Softkeys and Displays
600 MHz no tune
600 MHz no tune
This softkey disables external tuning of the reference chain. The 600 MHz
oscillator is free-running, that is, it is not locked to the 100 MHz oscillator.
Path
Ref Chain Tune Sense 600 MHz no tune
HP-IB command
REF:TS 5
Figure 10-17 Reference Chain
10-18 HP 70427A/HP 70428A User's Guide