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Keithley 2461 Reference Manual

Keithley 2461
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Section
8: TSP command reference Model 2461 Interactive SourceMeter® Instrument
Reference Manual
8-42 2461-901-01 A/November 2015
Details
This command is valid when the buffer style is writable or full writable.
Defines the units and the number of digits that are reported for the data. This function affects how the
data is shown in the reading buffer and what is shown on the front-panel Home, Histogram, Reading
Table, and Graph screens.
Example 1
extBuffer = buffer.make(100, buffer.STYLE_WRITABLE)
buffer.write.format(extBuffer, buffer.UNIT_WATT, buffer.DIGITS_3_5)
buffer.write.reading(extBuffer, 1)
buffer.write.reading(extBuffer, 2)
buffer.write.reading(extBuffer, 3)
buffer.write.reading(extBuffer, 4)
buffer.write.reading(extBuffer, 5)
buffer.write.reading(extBuffer, 6)
printbuffer(1, 6, extBuffer.readings, extBuffer.units)
Creates a 100-point reading buffer named
extBuffer
. Style is writable.
Set the data format to show units of watts with 3½ digit resolution.
Write 6 pieces of data into the buffer.
Print the buffer, including the readings and units.
Read the buffer.
Output:
1, Watt DC, 2, Watt DC, 3, Watt DC, 4, Watt DC, 5, Watt DC, 6, Watt DC
Example 2
extBuffer = buffer.make(100, buffer.STYLE_WRITABLE_FULL)
buffer.write.format(extBuffer, buffer.UNIT_WATT, buffer.DIGITS_3_5,
buffer.UNIT_WATT, buffer.DIGITS_3_5)
buffer.write.reading(extBuffer, 1, 7)
buffer.write.reading(extBuffer, 2, 8)
buffer.write.reading(extBuffer, 3, 9)
buffer.write.reading(extBuffer, 4, 10)
buffer.write.reading(extBuffer, 5, 11)
buffer.write.reading(extBuffer, 6, 12)
printbuffer(1, 6, extBuffer.readings, extBuffer.units, extBuffer.extravalues,
extBuffer.units)
Creates a 100-point reading buffer named extBuffer. Style is full writable.
Set the data format to show units of watts with 3½ digit resolution for the first value and for the secon
d value in
the buffer index.
Write 12 pieces of data into the buffer.
Print the buffer, including the readings and units.
Read the buffer.
Output:
1, Watt DC, 7, Watt DC, 2, Watt DC, 8, Watt DC, 3, Watt DC, 9, Watt DC, 4, Watt
DC, 10, Watt DC, 5, Watt DC, 11, Watt DC, 6, Watt DC, 12, Watt DC
Also see
buffer.make() (on page 8-14)
buffer.write.reading() (on page 8-43)
Reading buffers (on page 3-2)
Writable reading buffers (on page 3-27)

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Keithley 2461 Specifications

General IconGeneral
Maximum Current7 A
Power100 W
Resolution6.5 digits
Source Measure Unit (SMU)Yes
DC Voltage100 V
Maximum Voltage100 V
Display5-inch capacitive touchscreen
ConnectivityUSB, GPIB
SoftwareTSP
DC Current7 A
Current Source Range0 to 7 A
Voltage Measurement Range100 mV to 100 V
Current Measurement Range10 nA to 7 A
Voltage Measurement Resolution100 nV

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