Dmm.appendbuffer() - Keithley 3700A Series Reference Manual

Section 11: TSP command reference
The aperture setting is not available for the functions "continuity" and "nofunction". If you
query the aperture when either of these functions is selected, nil is returned. If you write the
command when either of these functions is selected, an error is generated.
The aperture value is saved with the dmm.func function setting, so if you use another function, then
return to the previous setting, such as "dcvolts" or "frequency", the aperture value you set
previously is retained.
The setting for aperture may be automatically adjusted based on what the DMM supports. Therefore,
after setting the aperture, query the value to see if it was adjusted.
If the detector bandwidth (dmm.detectorbandwidth) setting is 30 or less for "acvolts" or
"accurrent", an error message is generated if you try to set the aperture for these functions.
Example
dmm.func = "dcvolts"
dmm.aperture = 16.67e-3
Also see
dmm.dbreference
dmm.func (on page 11-179)
dmm.nplc (on page 11-209)

dmm.appendbuffer()

This function appends data from the reading buffer to a file on the USB flash drive. If no file exists, this function
creates a file.
Type TSP-Link accessible
Function Yes
Usage
dmm.appendbuffer("bufferVar", "fileName")
dmm.appendbuffer("bufferVar", "fileName", timeFormat)
bufferVar
fileName
timeFormat
11-146
(on page 11-170)
Affected by
A string with the name of a DMM reading buffer from which you want to append
data to the specified file
A string with the file name of the file on the USB flash drive to which reading
buffer data will be appended
How the date and time information should be saved. The values for
timeFormat are:
▪
dmm.buffer.SAVE_RELATIVE_TIME: Saves relative timestamps only
▪
dmm.buffer.SAVE_FORMAT_TIME: Saves dates, times and fractional
seconds. This is the default if no time format is specified
▪
dmm.buffer.SAVE_RAW_TIME: Saves seconds and fractional seconds
only
▪
dmm.buffer.SAVE_TIMESTAMP_TIME: Saves only timestamps
Series 3700A System Switch/Multimeter Reference Manual
Set the aperture to 16.67 milliseconds for
DC volts.
Where saved Default value
3700AS-901-01 Rev. D/June 2018