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Series 3700 System Switch/Multimeter Quick Start Guide
Section 4
:
Frequently Asked Questions
Document Number: 3700S-903-01 Rev. A / August 2007
4-21
The next example will configure the DMM the same as the above, except it will create a reading
buffer and store the 10 readings in that buffer:
Command
Description
reset()
Reset the instrument.
dmm.func = 'dcvolts'
Select DC volts as DMM function.
dmm.nplc = 0.5
Set the NPLC for DC volts.
dmm.range = 10
Set the range for DC volts.
mybuffer = dmm.makebuffer(1000)
Create a reading buffer for 1000 readings named
"mybuffer."
dmm.measurecount = 10
Set DMM to take 10 readings with each measure
command.
dmm.measure(mybuffer)
Take 10 readings and store in mybuffer.
printbuffer(1, 10, mybuffer)
Display the 10 readings.
How do I use other programs?
NOTE
Also see the LabVIEW® and Visual Basic documentation for details on using those
programs.
Test Script Builder is a tool for creating scripts. It includes built in color coding, debugging tools,
and error handling. One way to interface with the Series 3700 is to use Test Script Builder to
create scripts and store these scripts to non-volatile memory of the instrument. You can then call
these scripts using the front panel LOAD menu or use the system test program to call user
scripts or the functions these scripts create. Interfacing in this way may work well in situations
where the output the only required output from the Series 3700 is digital output. However, in
many situations, there is a need to gather some form of data from the Series 3700, whether that
data be measurements or status information. Therefore, it is important that we now discuss how
to use an external application development environment (ADE) to interface with the Series 3700.
The discussion will center on the use of Visual Basic and LabVIEW, two of the most popular
choices for ADE in the test and measurement industry. However, the concepts presented may
be used in conjunction with other ADE.
Fundamentals when using other programs
After selecting the communication interface of your choice (GPIB, USB or Ethernet), consult the
applicable reference material for the ADE to understand how to send and receive strings to/from
the Series 3700 via this interface. For USB, you will need to understand how to send and
receive strings using VISA TMC protocol. Please refer to National Instruments VISA User and
Reference manuals.
Next, refer to the ICL commands to determine which strings the Series 3700 can interpret. Refer
to the ICL commands contained in the Series 3700 reference manual.
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