Section 11: TSP command reference
Series 3700A System Switch/Multimeter Reference Manual
11-150
3700AS-901-01 Rev. D/June 2018
Example 1
dmm.func = "twowireohms"
dmm.autorange = dmm.ON
Enable autoranging for 2-wire ohms.
Example 2
dmm.func = "dcvolts"
dmm.reset("active")
print(dmm.autorange, dmm.range)
dmm.range = 50e-3
print(dmm.autorange, dmm.range)
Set DMM function to be DC volts.
Reset only the active DMM function (DC volts).
View the default autorange and range selection.
Select a range suitable for a 50 mV reading.
View the default autorange and range selection.
Output:
1.00000 1.00001
0.00000 1.000000000e-01
Also see
(on page 11-166)
(on page 11-179)
dmm.autozero
This attribute enables or disables automatic updates to the internal reference measurements (autozero) of the
instrument
Type
TSP-Link accessible
Affected by
Where saved
Default value
Attribute (RW)
Yes
Reset
DMM reset
Recall setup
Create configuration script
Save setup
dmm.ON (1)
Usage
state
= dmm.autozero
dmm.autozero =
state
state
Enable autozero:
dmm.ON
or
1
Disable autozero:
dmm.OFF
or
0
Refresh the reference points once then disable:
dmm.AUTOZERO_ONCE
or
2
Details
The autozero setting applies to the function selected by
dmm.func
. It is available for all functions
except
"continuity"
and
"nofunction"
.
You can send
dmm.AUTOZERO_ONCE
or
2
to refresh the reference points once. When this command
is sent, the reference points are refreshed, and then autozero is set to disabled (
dmm.OFF
or
0
).
Querying
dmm.autozero
after sending
dmm.AUTOZERO_ONCE
generates a response of
0
.
For
dmm.nplc
settings that are less than 0.2 plc, sending
dmm.AUTOZERO_ONCE
or
2
results in
significant delays. For example, the delay time at a NPLC of 0.0005 is 2.75 s. The delay time at 0.199
is 5.45 s.