Keithley 2700 DO

[marimg]

Hi!

I'm using a Keithley 2700 multimeter with its 7706 module. I want to create a pulse for the DO.

Does anyone how to do this?

PS. I don't have DAQ

[sendia]

Hello marimg,

Are you using any National Instrument product? Because I don't know how we can help you.

I will wait for your answer. Regards,

[marimg]

Yes, I'm using Labview 8.0

Thanks.

[sendia]

Hi marimg,

I will need more information to help you like, what is the connection between the instrument and your computer? RS232, GPIB, USB...??? with all of these protocols, you will need to use driver NI-VISA to send commands to the instrument. Instruments work with SCPI commands, which are standard set of commands to control programmable test and measurement devices in instrumentation systems. In addition, some instruments have special commands that only work with them (these commands are defined by the manufacturer). All of these commands are specified in the instrument user manual, and one of these will create a pulse for the DO.

Nevertheless, the question of what command will generate the pulse for the DO, is a question for Keithley.

[TheWoost]

Hi marimg,

I'd like to add to sendia's comment "some instruments have special commands that only work with them (these commands are defined by the manufacturer)".  Many times manufacturers of benchtop instruments will provide instrument drivers for LabVIEW that are specific to a device.  Our Instrument Driver Network is a great place to find such drivers if they exist.  I did a quick search of both the 2700 DMM as well as the 7706 I/O module, and came across the following drivers available for LabVIEW:

Keithley 2700

Keithley 7706

I'm assuming that you are connected to this instrument via GPIB (and an NI GPIB card), and you certainly could communicate to your device with the NI-VISA driver.  However, the instrument drivers I've linked above provide VIs that at their lowest level make calls to the NI-VISA driver without the need to dig in and understand the custom commands in the manual of your instrument.

For future reference, any questions that you have related to instrument control would be more appropriate at the following forum:  Instrument Control (GPIB, Serial, VISA, IVI)

Thanks,

Andrew W.

National Instruments