HP 70427A User Manual page 273

Softkeys and Displays
AM NSE IN | IF
AM NSE IN | IF
This softkey selects either the RF or IF AM detector.
When IN is underlined, the RF AM detector is selected and its output is
routed to the front-panel AM NOISE output. The downconverter's mixer is
disabled.
When IF is underlined, the IF AM detector is selected and its output is
routed to the front-panel AM NOISE output. The downconverter operates
normally.
The RF AM detector is disabled when an external mm wave mixer is used;
the IF AM detector can be used.
Path
HP-IB command
Figure 10-29 HP 70427A Downconverter
10-30 HP 70427A/HP 70428A User's Guide
AM Noise AM NSE IN| IF
0 selects
DC:AMN:AMN
selects
DC:AMN:AMN 1
IF
IN