How to change from talker to listener?

[embsys]

When dumping the screen, often an instrument is set
to talk-only, and the plotter (or the capture
software on PC) is set to listen only. I understand
the protocol to exchange data in this scenario.


However, certain instruments send a chunk of data and
then wait for a response from the plotter (or PC
software) before continuing. What is the GPIB
protocol sequence for a talker to become to listener,
and the other way around?

Thanks very much

[sergesl]

Hi Embsys,

The way a device is set to listen or talk depends on the programing language you are using to develop your application.
For example, LabVIEW takes care of the GPIB commands behind the scene. However, you must send the commands yourself if you are using C.
Regardless of the programing language, the low level protocol is the same. I have attached a document to this reply with information on low level talker/listener settings.
You can also visit http://www.ni.com/support/gpibsupp.htm for more information about GPIB communication.

Serges Lemo
Application Engineer
National Instruments