HP 70427A User Manual page 249

Softkeys and Displays
126 Hz default
126 Hz default
This softkey sets the phase-lock-loop bandwidth of the 100 MHz oscillator
to 126 Hz.
Path
Ref Chain 100 MHz PLL BW 126 Hz default
HP-IB command
REF:BW:PLL100 2
Figure 10-5 Reference Chain
10-6 HP 70427A/HP 70428A User's Guide