Keithley 2461 Reference Manual

Model 2461
Interactive SourceMeter® Instrument Reference Manual Section 8:
TSP command reference
2461-901-01 A/November 2015 8-39
Details
This attribute contains the timestamps (date, hours, minutes, seconds, and fractional seconds) of
readings stored in the reading buffer.
When using the compact buffer style, there is a very small drift between the triggering clock and the
timestamp clock, which may result in timestamp truncation and discontinuities over time. The
triggering of the measurement remains periodic based on the sample period without any apparent
discontinuities.
Example 1
reset()
testData = buffer.make(50)
trigger.model.load("SimpleLoop", 3, 0, testData)
trigger.model.initiate()
waitcomplete()
print(testData.timestamps[1])
Create a reading buffer named testData,
configure the instrument to make three
measurements, and store the readings in the
buffer.
Print the first reading date.
Output:
03/01/2013 14:46:07.714614838
Example 2
for x = 1, 3 do printbuffer(x, x, testData.timestamps) end
For the buffer created in Example 1, print the timestamps for the readings.
Output:
03/01/2013 14:46:07.714614838
03/01/2013 14:46:08.100468838
03/01/2013 14:46:08.487631838
Also see
buffer.delete() (on page 8-11)
buffer.make() (on page 8-14)
bufferVar.clear() (on page 8-19)
print() (on page 8-92)
printbuffer() (on page 8-93)
Reading buffers (on page 3-2)
Remote buffer operation (on page 3-23)

Keithley 2461 Specifications

General

Maximum Current	7 A
Power	100 W
Resolution	6.5 digits
Source Measure Unit (SMU)	Yes
DC Voltage	100 V
Maximum Voltage	100 V
Display	5-inch capacitive touchscreen
Connectivity	USB, GPIB
Software	TSP
DC Current	7 A
Current Source Range	0 to 7 A
Voltage Measurement Range	100 mV to 100 V
Current Measurement Range	10 nA to 7 A
Voltage Measurement Resolution	100 nV