Series 3700A System Switch/Multimeter Reference Manual
Section 11: TSP command reference
3700AS-901-01 Rev. D/June 2018
11-173
dmm.drycircuit
This attribute enables or disables the dry circuit feature of the 4-wire resistance measure function.
Type
TSP-Link accessible
Affected by
Where saved
Default value
Attribute (RW)
Yes
reset
DMM reset
Recall setup
Create configuration script
Save setup
0 (dmm.OFF)
Usage
state
= dmm.drycircuit
dmm.drycircuit =
state
state
Enable dry circuit:
dmm.ON
or
1
Disable dry circuit:
dmm.OFF
or
0
Details
The dry circuit setting only applies when
dmm.func
is set to
"fourwireohms"
or
"commonsideohms"
.
Enabling dry circuit limits the open-circuit voltage to below 20 mV, which is often required with
low-glitch measurements, such as measuring switch and relay contact resistance.
When dry circuit is enabled, offset compensation is automatically enabled.
An error is generated if:
•
You try to set
dmm.drycircuit
for a function other than
"fourwireohms"
or
"commonsideohms"
. Error 1114, "Setting conflicts with function selected" is generated.
•
You query
dmm.drycircuit
for a function other than
"fourwireohms"
or
"commonsideohms"
.
nil
is returned, along with error 1114.
•
The state is invalid.
The dry circuit setting is saved with the
dmm.func
function setting, so if you use another function,
then return to the previous function, the dry circuit setting you set previously is retained.
Example
dmm.func = "fourwireohms"
dmm.drycircuit = dmm.ON
Enable dry circuit for 4-wire ohms.
Also see
(on page 11-166)
(on page 11-179)
(on page 11-210)
