HP 70427A User Manual page 308

Softkeys and Displays
INPUT FREQ
INPUT FREQ
This softkey allows entry of the downconverter's input frequency.
When the downconverter is in μW mode you can enter a frequency between
4.9 MHz and 26.5 GHz. The downconverter will compute and display the
LO and IF frequencies.
When the downconverter is in mm mode, and the appropriate mm band has
been selected, a frequency between 17.9 GHz and 110.1 GHz can be entered.
This frequency will be the input to an external harmonic mixer. The
downconverter will compute and display the LO, IF, and comb line
frequencies.
Path
Freqs INPUT FREQ
HP-IB command frequency
DC:FREQ:INP
Where frequency is a real number.
HP 70427A/HP 70428A User's Guide 10-65