am using Windows 7 on a PC, just installed NI-488.2 for brand new GPIB-USB-HS. I have the GPIB-USB-HS connected to an Agilent E4419B power meter.
in NI MAX, i can see the GPIB-USB-HS just fine.
However, when i scan for instruments it says "no instruments found." it doesn't find the power meter at all. even though i have it connected to the Agilent power meter...it is definitely connected. The address of the power meter is 18 as it has always been.
the GPIB USB HS has amber "ready" sign. it never lights up the "active" LED.
I have set the remote interface settings in the power meter to GPIB, etc..i don't think it's anything with the power meter as i just used this with a different GPIB-USB-HS the other day (used labview) and had no problems at all.