Keithley 3721-ST User Manual

Series 3700A System Switch/Multimeter Reference Manual Section 11: TSP command reference
3700AS-901-01 Rev. D/June 2018 11-155
Example
buf1 = dmm.makebuffer(300000)
buf2 = dmm.makebuffer(300000)
print(dmm.buffer.usedcapacity)
print(dmm.buffer.maxcapacity -
dmm.buffer.usedcapacity)
Create buffers.
Reads the used reading buffer capacity for the system.
6.000000000e+05
5.000000000e+04
This shows that there is a capacity of 50,000 available for
creating additional reading buffers.
Also see
dmm.buffer.info() (on page 11-153)
dmm.buffer.maxcapacity (on page 11-154)
dmm.calibration.ac()
This function begins the specified AC adjustment step on the DMM.
Type
TSP-Link accessible
Affected by
Where saved
Default value
Function
Yes
Usage
dmm.calibration.ac(step)
dmm.calibration.ac(step, value)
step
The AC adjustment step to perform
value
The value for this adjustment step (if the adjustment step has a value)
Details
This command generates an error if the:
• Calibration is locked
• Step is out of sequence
• Step does not exist
• Step does not complete successfully
• Value passed is invalid for the step, out of range, or not needed
Example
For detail on how to use dmm.calibration.ac(), see AC volts adjustment (on page B-28), AC
current adjustment (on page B-30), and Frequency adjustment (on page B-32).
Also see
dmm.calibration.dc() (on page 11-156)
dmm.calibration.lock() (on page 11-156)
dmm.calibration.unlock() (on page 11-158)

Keithley 3721-ST Specifications

General

Type	Multimeter
Model	3721-ST
Manufacturer	Keithley
Measurement Functions	DC Voltage, AC Voltage, DC Current, AC Current, Resistance, Frequency, Temperature
Relay Type	Electromechanical
Temperature Range	-200°C to 1820°C
Accuracy	Varies by function and range
Resolution	Varies by function and range
Display	LCD
Interface	GPIB, RS-232
Topology	Multiplexer
Maximum Switching Voltage	300 V
Maximum Switching Current	1 A
Input Impedance	>10 GΩ (DC Voltage ranges)