Keithley DMM7510 Reference Manual page 208

Model DMM7510 7½ Digit Graphical Sampling Multimeter Reference Manual Section 3: Functions and features
To measure current and return the relative time and a reading, send the following command:
:MEASure:CURRent? "testData", REL, READ
Buffer storage is consistent whenever readings are taken. Parameters such as REL and READ only
affect what is included in the response. If you do not include parameters, the command only returns
the reading.
Using TSP commands to select a reading buffer:
To make a measurement and store the readings in a specific reading buffer, use the
dmm.measure.read(bufferName) function. If you do not specify a buffer when you use the
dmm.measure.read() function, readings are stored in defbuffer1.
To measure DC voltage and store the readings in the voltMeasBuffer reading buffer, send the
commands:
dmm.measure.func = dmm.FUNC_DC_VOLTAGE
dmm.measure.read(voltMeasBuffer)
To measure voltage, store the readings in voltMeasBuffer, and print the last reading in the buffer,
send the command:
print(dmm.measure.read(voltMeasBuffer))
To measure DC current, store the readings in defbuffer1, and print the last reading in the buffer,
send the commands:
dmm.measure.func = dmm.FUNC_DC_CURRENT
print(dmm.measure.read())
Using the front panel to store readings in the selected buffer
Before you store readings, make sure the correct reading buffer is selected. See Selecting a buffer
(on page 3-23) for more information.
Each time a reading buffer is created, the instrument automatically selects the newly created buffer
as the active buffer.
To store a reading from the front panel, make a measurement. The buffer-fill indicators light up to
indicate that the buffer is filling. Depending on the size of the buffer, the lit indicator may be difficult to
observe. When all four indicators are lit, the buffer is completely filled. All of the indicators will not be
lit if the number of readings stored is less than the selected buffer capacity.
To stop storing readings in a buffer when you are making continuous readings, select the trigger
mode indicator and select the Manual Trigger Mode. You can press and hold the TRIGGER key for
about 3 seconds to display the trigger mode window.
Stored readings are lost when the instrument is turned off or reset. Stored readings are also lost
when you resize a reading buffer.
DMM7510-901-01 Rev. B / May 2015 3-25