Wait for RQS gives error -1073807313 after upgrade to WinXP

[Heiko Fettig]

Since upgrading our lab machine to WinXP from WinNT4 one of my instrument dirvers which uses the 'VISA wait for RQS' function returns the error -1073807313 (Hex 0xBFFF002F) You must be enabled for events of the specified type in order to receive them.

I am enabling the OPC bit in the Event Status Register and Event Summary bit in the Status Register. (*CLS;*ESE 1;*SRE 32; SENS1:EYE:TCEN ON; *OPC;). In WinNT4 this worked like a charm. Now in WinXP I get an error.

Any ideas?

[Dan_Mondrik]

This is referring to the VISA software, not to the device. You must first call VISA Enable Event with event type Service Request. You may just be missing a call to some other instrument driver function that does this for you.

Dan Mondrik
National Instruments