HP 70427A User Manual page 369

Softkeys and Displays
Source
Source
This softkey puts the HP 70427A or HP 70428A Option 002 in source mode.
In source mode it has the capabilities of a standard HP 70428A Microwave
Source Module.
Path
This softkey is present when the HP 70427A is in downconverter
mode or when the HP 70428A Option 002 is in tunable source mode.
HP-IB command
INST 4
10-126 HP 70427A/HP 70428A User's Guide