Keithley 2461 Reference Manual

Model 2461
Interactive SourceMeter® Instrument Reference Manual Section 8:
TSP command reference
2461-901-01 A/November 2015 8-29
bufferVar.seconds
This attribute contains the timestamp of a reading in seconds, in UTC format.
Type TSP-Link accessible Affected by Where saved Default value
Attribute (R)
Yes
Restore configuration
Instrument reset
Power cycle
Not applicable
Not applicable
Usage
nonFracSeconds = bufferVar.seconds[N]
nonFracSeconds
The nonfractional seconds portion of the timestamp when the reading was stored
bufferVar
The name of the reading buffer, which may be a default buffer (defbuffer1 or
defbuffer2
) or a user-defined buffer
N
The reading number N; can be any value from 1 to the number of readings in the
buffer; use the bufferVar.n
command to determine the number of readings in the
buffer
Details
This attribute contains the nonfractional seconds portion of the timestamp when the reading was
stored in Coordinated Universal Time (UTC) format.
The nonfractional seconds portion of the timestamp gives the lowest resolution down to 1 second. To
access additional resolution of a timestamp, see bufferVar.fractionalseconds.
Example
reset()
testData = buffer.make(50)
trigger.model.load("SimpleLoop", 6, 0,
testData)
trigger.model.initiate()
waitcomplete()
printbuffer(1, 6, testData.seconds)
Create a reading buffer named testData,
configure the instrument to make six
measurements, and store the readings in
the buffer.
Print the seconds portion for readings 1 to 6
in testData.
Example output:
1362261492, 1362261492,
1362261493, 1362261493,
1362261493, 1362261494
Also see
bufferVar.fractionalseconds (on page 8-24)
bufferVar.relativetimestamps (on page 8-28)

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