Keithley 2461 Reference Manual

Section
8: TSP command reference Model 2461 Interactive SourceMeter® Instrument
Reference Manual
8-26 2461-901-01 A/November 2015
bufferVar.n
This attribute contains the number of readings in the specified reading buffer.
Type TSP-Link accessible Affected by Where saved Default value
Attribute (R) Yes
Restore configuration
Instrument reset
Power cycle
Not applicable Not applicable
Usage
numberOfReadings = bufferVar.n
numberOfReadings
The number of readings stored in the reading buffer
bufferVar
The name of the reading buffer, which may be a default buffer (defbuffer1 or
defbuffer2
) or a user-defined buffer
Details
You can call this command to return the number of readings stored in the specified reading buffer.
You can use the bufferVar.n attribute in other commands. For example, to print all of the readings
in a buffer, use the following command:
printbuffer(1, bufferVar.n, bufferVar.readings)
Where bufferVar is the name of the buffer to use.
Example
reset()
testData = buffer.make(100)
trigger.model.load("SimpleLoop", 3, 0, testData)
trigger.model.initiate()
waitcomplete()
print(testData.n)
print(defbuffer1.n)
print(defbuffer2.n)
Create a reading buffer named
testData, configure the instrument to
make three measurements, and store the
readings in the buffer.
Print the number of readings in
testData.
Output:
3
Print the number of readings in
defbuffer1.
Example output:
0
Print the number of readings in
defbuffer2.
Example output:
0
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