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Series 3700A System Switch/Multimeter Reference Manual
Section 11: TSP command reference
3700AS-901-01 Rev. D/June 2018
11-149
Also see
(on page 4-4)
(on page 11-166)
(on page 11-179)
dmm.autorange
This attribute specifies the autorange setting for the active function
Type
TSP-Link accessible
Affected by
Where saved
Default value
Attribute (RW)
Yes
Reset
DMM reset
Recall setup
Create configuration script
Save setup
1 (dmm.ON)
Usage
value
= dmm.autorange
dmm.autorange =
value
value
Autorange:
▪
Enable:
dmm.ON
or
1
▪
Disable:
dmm.OFF
or
0
Details
Autorange selects the best range in which to measure the signal that is applied to the input terminals
of the instrument. When autorange is enabled, the range increases at 120 percent of range. The
range decreases occur when the reading is <10 percent of nominal range.
The autorange setting applies to the function selected by
dmm.func
. Autorange is available for the
following functions:
•
"accurrent"
or
dmm.AC_CURRENT
•
"acvolts"
or
dmm.AC_VOLTS
•
"commonsideohms"
or
dmm.COMMON_SIDE_OHMS
•
"dccurrent"
or
dmm.DC_CURRENT
•
"dcvolts"
or
dmm.DC_VOLTS
•
"fourwireohms"
or
dmm.FOUR_WIRE_OHMS
•
"twowireohms"
or
dmm.TWO_WIRE_OHMS
Autorange is not available for any other functions. If you try to set autorange for any other function, an
error is returned. If you query the autorange for any other function, nil is returned and an error is
generated.
The autorange value is saved with the
dmm.func
function setting, so if you use another function,
then return to the previous setting, such as
"dcvolts"
or
"fourwireohms"
, the autorange setting
you set previously is retained. With autorange enabled, you can use the
dmm.range
command to
view the range that is presently being used. Using
dmm.range
to select a fixed range disables
autorange.