Keithley 2461 Reference Manual

Section
8: TSP command reference Model 2461 Interactive SourceMeter® Instrument
Reference Manual
8-94 2461-901-01 A/November 2015
Details
If startIndex is set to less than 1 or if endIndex is more than the size of the index, 9.910000e+37
is returned for each value outside the allowed index and an event is generated.
If overlapped commands use the specified reading buffers and the commands are not complete (at
least to the specified index), this function outputs data as it becomes available.
When there are outstanding overlapped commands to acquire data, n refers to the index that the last
entry in the table has after all the readings have completed.
If you pass a reading buffer instead of a reading buffer subtable, the default subtable for that reading
buffer is used.
This command generates a single response message that contains all data.
The format.data attribute controls the format of the response message.
You can use the bufferVar attributes that are listed in the following table with the print buffer
command. For example, if testData is the buffer, you can use testData.dates attribute to print
the date of each reading in the testData buffer.
You can use bufferVar.n to retrieve the number of readings in the specified reading buffer.
Attribute Description
bufferVar.readings
The readings stored in a specified reading buffer. See
bufferVar.readings (on page 8-27).
bufferVar.dates
The dates of readings stored in the reading buffer. See
bufferVar.dates (on page 8-20).
bufferVar.statuses
The status values of readings in the reading buffer. See
bufferVar.statuses (on page 8-36).
bufferVar.formattedreadings
The stored readings formatted as they appear on the
front-panel display. See bufferVar.formattedreadings (on page
8-23).
bufferVar.sourceformattedvalues
The source levels formatted as they appear on the front-panel
display when the readings in the reading buffer were acquired.
See bufferVar.sourceformattedvalues (on page 8-30).
bufferVar.sourcevalues
The source levels that were being output when readings in the
reading buffer were acquired. See bufferVar.sourcevalues (on
page 8-33).
bufferVar.sourcestatuses
The source status conditions of the instrument for the reading
point. See bufferVar.sourcestatuses (on page 8-31).

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