Keithley 2657A User Manual

Section 7: TSP command reference Model 2657A High Power System SourceMeter® Instrument Reference Manual
7-198 2657A-901-01 Rev. B/December 2012
Details
This attribute controls the number of measurements taken any time a measurement is requested. When using a
reading buffer with a measure command, this attribute also controls the number of readings to be stored.
If smuX.measure.count is set to a value greater than 1, any measurement delay set by
smuX.measure.delay will only occur before the first measurement, while the smuX.measure.interval
controls the interval between successive measurements.
Example
smua.measure.count = 10
Sets the SMU channel A measure count to 10.
Also see
reset() (on page 7-155)
setup.recall()
(on page 7-175)
smuX.measure.delay
(on page 7-198)
smuX.measure.interval
(on page 7-202)
smuX.measure.overlappedY()
(on page 7-204)
smuX.measure.Y()
(on page 7-208)
smuX.reset()
(on page 7-211)
smuX.measure.delay
This attribute controls the measurement delay.
Type TSP-Link
accessible
Affected by Where saved Default value
Attribute (RW) Yes Instrument reset
SMU reset
Recall setup
Saved setup smuX.DELAY_AUTO
Usage
mDelay = smuX.measure.delay
smuX.measure.delay = mDelay
mDelay
Set to the measurement delay value in seconds (for example, to specify an
additional 10 ms measurement delay, set the value to 0.010)
You can also set it one of the following values:
0 or smuX.DELAY_OFF: No delay
-1 or smuX.DELAY_AUTO: Automatic delay value
X
Source-measure unit (SMU) channel (for example, smua.measure.delay applies
to SMU channel A)
Details
This attribute allows for additional delay (settling time) before taking a measurement. If you specify the value
instead of using the automatic delay value, the delay you specified is used regardless of the range.
The smuX.DELAY_AUTO setting causes a current range-dependent delay to be inserted when a current
measurement is requested. This happens when a current measurement command is executed, when the
measure action is being performed in a sweep, or after changing ranges during an autoranged measurement.
If smuX.measure.count is greater than 1, the measurement delay is only inserted before the first
measurement.
Example
smua.measure.delay = 0.010
Sets a 10 ms measurement delay for SMU channel A.

Keithley 2657A Specifications

General

Brand	Keithley
Model	2657A
Category	Measuring Instruments
Language	English