Hello Rami,
Here is a link to
Instrument Control Fundamentals, which is a great place for you to get started. I see that you also
posted about a eg30 connector. I am not familiar with that connector, and it would be best to add that discussion to this thread so other people don't have to look at both threads for issues that are so closely related.
If you do not currently have a GPIB card, you should start by obtaining one and the necessary device drivers for it. NI-GPIB cards use
NI-488.2. Once you have confirmed that it is working correctly, you will need to get the programming manual for your device and try out some of the commands. If you are using an NI-GPIB card, this can be done in Measurement and Automation Explorer (MAX). After confirming that you can sucessfully communicate with your device, you can then decide if you would rather put together a simple and quick application in LabVIEW or spend more time to craft an Instrument Driver for your device that is more modular and reusable. Either way, you will be the judge of which approach suits you the best.
For more information on developing Instrument Drivers, please see
IDNet - Development Tools and Resources. I also recommend that you contact the manufacturer about the eg30 connector.
Let us know how it is going and if you have anymore questions.
Good Luck,
NathanT