Agilent Technologies 34420A, User Manual

Page: 69 / 294

•
Remote operation: The CONFigure and MEASure subsystems use
an optional parameter to specify the input channel as either 1 or 2:
CONF:VOLT:DC DEF, DEF,(@FRONTl)
CONF:VOLT:DC DEF, DEF,(@FRONT2) Channel 1 operation
Channel 2 operation
The SENSe subsystem uses a keyword modification to indicate the
channel:
SENS1:VOLT:DC:RANG:AUTO
SENS2:VOLT:DC:RANG:AUTO Channel 1 operation
Channel 2 operation
Two Channel Measurements
Ch1 - Ch2
•
Difference measurements: First, set the range and null value for
each input channel. Then, select difference measurements.
Difference
= ((
Ch 1 voltage
−
Ch
1 Null
) − (
Ch 2 voltage
−
Ch
2
Null
))
−
Null
*
Shift Ch1- Ch2
•
Ratio measurements: First, set the range and null value for each
input channel. Then, select ratio measurements.
Ratio
=
(
Ch 1 voltage
−
Ch 1 Null
)
(
Ch
2 voltage
−
Ch 2
Null
)
•
Remote operation: use the following commands to measure or
configure a difference or ratio measurement. Set each channel to the
appropriate range and null conditions using:
[SENSe1: | SENSe2:]
VOLTage:DC
:RANGE < range >
:NULL:STATe {OFF | ON}
:NULL:VALue {<
value
> | MIN | MAX}
Then use the following commands to measure the ratio or difference:
MEASure:VOLTage:DC
:RATIO?
:DIFFerence?
CONFigure:VOLTage:DC
:RATIO
:DIFFerence
[SENSe:]FUNCtion "VOLTage:RATio"
[SENSe:]FUNCtion "VOLTage:DIFFerence"
*Difference Null is only available from the Front Panel.
3
Chapter 3 Features and Functions
Voltage Measurement Configuration
67