09-27-2005 02:45 PM
09-27-2005 03:26 PM
There is IEEE-488.1 and IEEE-488.2. Is that the difference you're talking about? VISA will work with instruments written to either standard and you should be able to freely mix 488.1 and 488.2 instruments. It sounds more likely that you might have an address conflict. Make sure that all are unique.
Also if you want to try a VISA driver for the counter, there is one for the HP5384 that might be close enough. You can get it here.09-28-2005 08:32 AM
Tried the HP 5384 LV driver --- Same problem, in that MAX gives Ghost Images of GPIB of address HP 5385 or 5386 A Frequeny Counter, used 23. Ghost Images === MAX rescan for Instruments, MAX Reports Instrument 7- 30 at GPIB 23 and times out. Still get error 53 on LCD of HP 5385 or 5386 A Frequeny Counter.
HP53131A Frequeny Counter works fine using Address 23 and comes up Instrument 7. Found some corrected LV Drivers for HP53131A Frequeny Counter in this BB. -- Thanks
09-28-2005 08:34 AM
09-28-2005 08:48 AM
The instrument drivers you have installed and whether they use VISA or low level GPIB functions have nothing to do with your problems in MAX. Yes, GPIB (IEEE-488) predates VISA. HPIB (Hewlett-Packard Interface Bus) is the same thing as GPIB (General Purpose Interface Bus) but since Hewlett-Packard invented it, some of their literature will refer to HPIB. The VISA API will make calls to the GPIB device driver that is installed for your controller. When MAX does a scan for instruments, it uses (I am almost certain), low level GPIB commands to detect what, if any, instruments are connected. Your problem needs to be fixed first in MAX before you do any programming and is not connected in any way to LabVIEW or the drivers you downloaded. It is almost certainly an instrument problem.
What exactly do you mean by "ghost images"? Also, look in the manual for the HP5386 and see what error 53 means.
09-28-2005 01:59 PM
09-29-2005 08:32 AM
1. I made a mistake in that HP 5385a & 5386a FC reports error 52 - first character of cmd is illegal, durring MAX times out in the "Scan for Instruments", reported error 53--NOT TRUE.
2. By "ghost images" , I have never seen MAX do this, but MAX times out in the "Scan for Instruments" then reports Instruments 7 thru 30 as GPIB 24 which is what I set the HP 5385a & 5386a FC.
The manual I have for the instrument is dated MAR 1985.
3. The HP8650a SA, I had in another Company, used ID instead of IDN? But setup fine in MAX?
Is there any Known reason why MAX will not work with HP 5385a & 5386a FC?
09-29-2005 11:06 AM
09-29-2005 02:25 PM
09-29-2005 03:42 PM