NI USB GPIB Controller

[appala]

Hi All,

I had NI HS-USB-GPIB Controller and keithley USB-488 Controller

Initially i was able to control instruments with NI HS-USB-GPIB Controller

Later i want to use  keithley USB-USB Controller so i installed driver given by keithley USB-488 Controller

Now i want to revert back to NI GPIB controller 

My problem i have uninstalled 488 GPIB driver given by keithley, installed NI USB-GPIB Controller drivers

I was able to see the controller and Instrument  connected in the MAX, but i was not able to see it in labVIEW VISA control

could you suggest where problem could be

Thanks

[Steven_T]

Hello Appala,

I am unsure about what the problem could be.  What versions of NI-488.2 and 488 GPIB were you using? 

Also, you mentioned that you are able to communicate with the device (scan for instruments worked correctly), is this still correct?

Thanks,

Steven T.

[Dennis_Knutson]

Since MAX does not use VISA to communicate to an instrument, it sounds like you just don't have that installed or still have a Keithley version installed.

[appala]

Hi all,

Yes, i too suspect the same,

but i have unistalled "CEC-488", is there anything else to be  uninstalled.

Thanks

[Jeff at home]

OMG!

Like you can't define a VISA sesion to the device...

Keithley submits drivers to the NI web-site in (almost) real time

Primarilliy because the XXxx01 has a FW update "flash-port" abd is,(by mfg spec) "488.2 compliant " , goes to < gotos?> an unk state when it receives  <"IDN?"> 

Don't *IDN?  a kiethley instrument (It will hang up)

Don't *IFC  while an unkown instrumet is hanging on GPIB:x  (some controleres take this as "QU"- or "Quit Controlling"

READ the MFG users guides

DO NOT assume that a spec will tell you that a device isn't (really) 488.2

ANOTHER (488.2) NON-compliant device!

Anyone care to make a comprehensive list? 

[Dennis_Knutson]

The 488 driver is completely separate from the VISA driver. Verify in MAX what you have installed. If you don't have NI-VISA installed, then it's pretty clear that would be a problem.

[appala]

Hello Dennis,

I was able to see NI-VISA in MAX Software section