Keithley 3720-ST User Manual

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:
1.000000000e+00 1.000000000e+01
0.000000000e+00 1.000000000e-01
Also see
dmm.configure.recall() (on page 11-165)
dmm.configure.set() (on page 11-166)
dmm.func (on page 11-179)
dmm.range (on page 11-214)
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.

Keithley 3720-ST Specifications

General

Brand	Keithley
Model	3720-ST
Category	Multimeter
Language	English