Keithley DMM7510 Reference Manual

Model DMM7510
7½ Digit Graphical Sampling Multimeter Reference Manual Section 8:
TSP command reference
DMM7510-901-01 Rev. B / May 2015 8-27
bufferVar.extravalues
This attribute contains the additional values in a 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
extraValue = bufferVar.extravaluesN
extravalue
The extra values for readings
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 an additional value, such as the sense voltage from a DC voltage ratio
measurement. The reading buffer style must be set to full to use this option.
If there is no additional value, this attribute returns 0.
Example
reset()
testData = buffer.make(50, buffer.STYLE_FULL)
dmm.measure.func = dmm.FUNC_DCV_RATIO
dmm.measure.read(testData)
print(testData.extravalues[1])
printbuffer(1,1,testData.extravalues)
Reset the instrument.
Create a reading buffer named testData
that can hold a maximum of 50 readings
and is set to the style full.
Make a measurement and save it to the
testData buffer.
Print the first extra reading value.
Example output:
-7.4235309424
-7.4235309424
Also see
buffer.delete() (on page 8-16)
buffer.make() (on page 8-18)
bufferVar.clear() (on page 8-24)
print() (on page 8-231)
printbuffer() (on page 8-232)
Reading buffers (on page 3-13)
Remote buffer operation (on page 3-30)

Keithley DMM7510 Specifications

General

Resolution	7.5 digits
DC Voltage Range	100 mV to 1000 V
AC Voltage Range	100 mV to 750 V
DC Current Range	10 µA to 10 A
Resistance Range	10 Ω to 1 GΩ
Sampling Rate	1 MS/s
Memory	27.5 million readings
Display	5 inch capacitive touchscreen
AC Voltage Accuracy	±0.06% of reading
AC Current Range	10 A
Connectivity	USB, LAN, GPIB