Where is the GPIB-USB-HS user's guide?

[Apollonios]

I have not seen a GPIB-USB-HS user's guide, hard copy or online version. Where do I get additional info about Hardware overview, operation, interfacing notes etc...

For instance the NI  GPIB-232CTA comes with a 200 page user's manual.

Thanks

[Dennis_Knutson]

Start>Programs>National Instruments>NI-488.2.

You should have found the on-line documents simply by going to the product page and clicking on the 'Resources' tab.

[Apollonios]

Thanks for the reply Dennis. The problem is that there is information only on installation of the GPIB-USB-HS, what I am looking for is architecture, features and operations. It looks like there is no detailed description for this controller.

I just finished writing an application (for Windows/Linux/Solaris) using the NI serial to GPIB controller, GPIB-232CT-A.

I did that by sending/reading ASCII commands to/from the serial port using system write/read commands.

What I would like to know if the same can be done with NI's GPIB-USB-HS by using a generic I/O USB kernel driver (such as the open source libusb or libUsbWin32 drivers ) I am particularly interested in this because of the the GPL requirement for USB kernel drivers when using Linux kernel > 2.6.25 .

thanks again.

[Dennis_Knutson]

I don't know if that sort of information is available anywhere on any of the controllers. A GPIB controller is quite a bit different than a simple com port. As far as I know, you need to use either the NI-GPIB or VISA library. Perhaps someone with more detailed knowledge will correct me.

[Apollonios]

In GPIB-232CTA all the GPIB comm. handling was embedded in the controller. Your app only has to send/receive simple ASCII strings through the serial port, in my implementation I did not use any GPIB or VISA drivers.

My question is NI's GPIB-USB controller the same way or all of the GPIB handling was shifted into the NI GPIB driver? Is a 488 GPIB driver necessary or it is optional as in GPIB-232 CTA?

thanks

[Dennis_Knutson]

As I said, I believe you have to go through the 488 driver. Your comparison to the RS232-GPIB converter is not really relevant. The USB does not in any way emulate a serial port.

[sco]

Check this post

http://forums.ni.com/t5/Instrument-Control-GPIB-Serial/NI-GPIB-USB-controller-as-a-device-C/m-p/1239...

MfG,

Deepak