Remote Interface Reference 4
Keysight 34420A User’s Guide 155
Selecting the Input Channel
The correct input channel is automatically selected for resistance and
temperature measurement functions. For voltage measurements, you must select
the input channel.
The easiest, but least flexible, method to specify the input channel is by using the
channel parameter in the MEASure? or CONFigure commands. For example,
CONFigure:VOLTage:DC MAX, MAX, (@FRONt1) Channel 1
CONFigure:VOLTage:DC MAX, MAX, (@FRONt2) Channel 2
In the SENSe subsystem, the keyword is modified to select the inputchannel. For
example,
SENSe1:VOLTage:RANGe 10 Channel 1 range setting
SENSe2:VOLTage:RANGe 10 Channel 2 range setting
For increased flexibility, and to take advantage of the independant null and range
settings for each input channel, you can set each input channel as desired and
switch between the input channels using the ROUTe:TERMinals command. For
example,
SENSe1:VOLTage:RANGe 10 Channel 1 range 10 V
SENSe2:VOLTage:RANGe .1 Channel 2 range 100 mV
ROUTe:TERMinals FRONt1 Select channel 1
READ? Channel 1 measurement
ROUTe:TERMinals FRONt2 Select channel 2
READ? Channel 2 measurement
You can determine which input channel is active with the query:
ROUTe:TERMinals?
The query returns either FRON1 or FRON2.
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