HP 70427A User Manual page 285

Softkeys and Displays
Down Convert
Down Convert
This softkey puts the HP 70427A in downconverter mode. It is displayed
only when the HP 70427A is in source mode. Any source settings such as
frequency and power will be preserved.
Path
Down Convert
HP-IB command
INST 3
10-42 HP 70427A/HP 70428A User's Guide