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Agilent IO and VISA COM connections to legacy equipment

Question asked by kennym on Jun 30, 2008
Latest reply on Jan 1, 2010 by jalim

I'm using Agilent IO connection expert (ver 15) and VISA COM (VISA COM type 3 library) to connect to a couple of old equipment, HP8563E spectrum analyser and HP5350B frequency counter, via either an NI488 compatible GPIB card or Agilent 82357A GPIB to USB adaptor.

I get time out errors when performing the read operation from both programs using the GPIB card, the write operation is OK.  I can see from the IO monitor utility from the connection expert that the right values have been returned by the machines but the program keeps running till time out, as if the termination character is not recognised by both programs.

However, both programs are ok at the read operations when using the 82357A.

I have the time out time set to 5000ms.  The termination character is enabled and is set to the return carriage or line feed.

My gpib card should be ok as I can use it with VEE pro 6 to both read and write to these equipment.

Your help will be greatly appreciated.