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Multimeter Command Reference 95Chapter 3
[:VOLTage[:DC]]:RATio
CONFigure[:VOLTage[:DC]]:RATio [<range>|MIN|MAX|DEF|AUTO
[,<
resolution>|MIN|MAX|DEF]] configures the multimeter for dc:dc ratio
measurements with the specified range and resolution.
The ratio is calculated from the voltage applied to the HI and LO input terminals
divided by the reference voltage applied to the “Sense” HI and LO terminals.
Autoranging is automatically selected for the reference voltage measurement on the
“Sense” HI and LO terminals. The specified range in the command applies to the
signal connected to the HI and LO input terminals.
Note Autorange on the “Sense” terminals is from 100mV to 10V range only. Maximum
voltage you can apply to the “Sense” terminals is 10V.
Parameters
Comments • To select a standard measurement range, specify range as the input signal’s
maximum expected voltage. The multimeter then selects the correct range to
accept the input.
• The AUTO or DEFault option for the range parameter enables autorange. The
DEFault option for resolution defaults the integration time to 10 PLC.
• The MIN and MAX parameters select the minimum or maximum values for
range and resolution:
For range:
MIN = 100mV; MAX = 300V.
For resolution:
MIN selects the best resolution (the smallest value) for the
selected range.
MAX selects the worst resolution (the largest value) for the
selected range.
DC:DC RATIO =
dc signal voltage
dc reference voltage
-------------------------------------------------
=
Hi and LO input
Sense HI and LO input
-------------------------------------------------------
Parameter Name Parameter Type Range of Values Default Units
<range>
(HI-LO input)
numeric 100mV|1V|10V|100V|300V|
MIN|MAX|DEF|AUTO
volts
<
resolution>
numeric
resolution|MIN|MAX|DEF
volts