Keithley 2651A Reference Manual

Section 7: Command reference Model 2651A High Power System SourceMeter® Instrument Reference Manual
7-236 2651A-901-01 Rev. A / March 2011
Details
With this attribute enabled (setting action to smuX.ENABLE or smuX.ASYNC), configure the measurement with
one of the smuX.trigger.measure.Y() functions.
If this attribute is set to smuX.ASYNC:
• Asynchronous sweep measurements can only be used with measure autoranging turned off. To turn
measure autoranging off for all measurements during the sweep, set the
smuX.measure.autorangeY attribute to smuX.AUTORANGE_OFF.
• If the integrating ADC is selected (smuX.measure.adc attribute is set to smuX.ADC_INTEGRATE),
autozero must also be turned off. To turn off autozero, set the smuX.measure.autozero attribute to
smuX.AUTOZERO_OFF or smuX.AUTOZERO_ONCE.
If either of the above items are incorrectly configured, the smuX.trigger.initiate() function will generate
an error.
Also see
smuX.measure.adc (on page 7-190)
smuX.trigger.autoclear
(on page 7-229)
smuX.trigger.measure.Y()
(on page 7-238)
Triggering (on page 3-32)
smuX.trigger.measure.set()
This function sets the measure event detector to the detected state.
Type TSP-Link accessible
Affected by Where saved Default value
Function Yes
Usage
smuX.trigger.measure.set()
X
Source-measure unit (SMU) channel (for example,
smua.trigger.measure.set() applies to SMU channel A)
Details
This function is useful whenever you want the SMU to continue operation without waiting for a programmed
trigger event. When called, this function immediately satisfies the event detector, allowing the SMU to continue
through the trigger model.
A common example of when this function can be used is when you want the SMU to immediately perform an
action the first time through the trigger model even if a programmed trigger event does not occur. Make sure that
if the event detectors are configured to automatically clear (because the smuX.trigger.autoclear attribute
is set to smuX.ENABLE) that this command is issued after the SMU has entered the trigger layer. This function
can also be used to start actions on the SMU in case of a missed trigger event.
The SMU will automatically clear all event detectors when the smuX.trigger.initiate() function is
executed. This function should be called after the sweep is initiated.
Example
smua.trigger.measure.set()
Sets the measure event detector of
SMU channel A.

Keithley 2651A Specifications

General

Brand	Keithley
Model	2651A
Category	Measuring Instruments
Language	English