Keithley 3700A Series Reference Manual

Series 3700A System Switch/Multimeter Reference Manual Section 11: TSP command reference
3700AS-901-01 Rev. D/June 2018 11-195
dmm.linesync
This attribute determines if line synchronization is used during the measurement.
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.linesync
dmm.linesync = state
state
Enable line sync: dmm.ON or 1
Disable line sync: dmm.OFF or 0
Details
This attribute is only valid when dmm.func is set to "commonsideohms", "continuity",
"dccurrent", "dcvolts", "fourwireohms", "temperature", or "twowireohms". All other
functions generate an error when written and return nil when queried.
When line synchronization is enabled, measurements are initiated at the first positive-going zero
crossing of the power line cycle after the trigger.
The line sync setting is saved with the dmm.func function setting, so if you use another function, then
return to a previous function, the line sync you set previously is retained.
Example
dmm.func = "fourwireohms"
dmm.linesync = dmm.ON
Enables line sync for the "fourwireohms"
function.
Also see
Line cycle synchronization (on page 4-4)
dmm.configure.recall() (on page 11-165)
dmm.configure.set() (on page 11-166)
dmm.func (on page 11-179)

Keithley 3700A Series Specifications

General

Model	3700A Series
Category	Multimeter
Measurement Functions	DC Voltage, AC Voltage, DC Current, AC Current, Temperature, Capacitance
DC Voltage Accuracy	±0.0035% of reading
Temperature Measurement	Thermocouple, RTD, Thermistor
Temperature Range	Varies with sensor type
Frequency Range	3 Hz to 500 kHz
Capacitance Range	10 pF to 100 µF
Interface	LAN, USB, GPIB
Power Supply	100 V to 240 V, 50 Hz to 60 Hz