[time-nuts] time-nuts Digest, Vol 189, Issue 11

[Dave B]

Hi Skip.

Does the Austron even recognise the *IDN? query that Ni-Max uses to
identify instruments?  Information on those is "thin" on the web.

Is your ENET-GPIB able to work in analyser mode, so you can see exactly
what's happening on the bus as the PC scans for devices?

Check the cables.  If I had a penny for every bus issue that was caused
by a bad cable, I could have retired by now.

Try running "NI I/O Trace" (what used to be known as NI-Spy) to see
what's going on, or not.  Often a good first hit tool to use.

If not, can you beg-borrow or otherwise find for temporary use, a NI
GPIB-USB-HS+ adapter?  (The + versions have the analyser needed bus data
latch enabled.)

Some other makes of GPIB PC I/O card can sometimes be used as a capable
bus protocol analyser, the early "BrainBoxes Professional 488" 8 bit ISA
PC card in particular. (In reality, a generic parallel I/O chip, some
glue logic and bus driver chips.  Everything was done in software, under
DOS!  At the cost of a dedicated PC, it made in it's day, a capable bus
analyser.)

Have you tried to manually send (using the interactive comm's tool) a
simple command or query to the Austron, and see (either) a GPIB system
error message, or any response from the Austron.

There is little on the 'web in the way of any manual I could find to
read to see what might be needed.   But it's worth remembering that
these instruments are very early GPIB devices, so probably won't work
without some effort on a bog-standard modern NI based system.

Regards.

Dave B G0WBX.


On 07/04/2020 02:55, time-nuts-request at lists.febo.com wrote:
> Hello time-nuts,
> I have been trying to talk to the Austron 2110 via the GPIB with
> absolutely no luck.  The controller is a NI ENET-GPIB and it talks to
> the 5370B just fine.  When the find GPIB devices button is clicked the
> Austron 2110 is nowhere to be found.
> I actually have two of the 2110 units and they both behave the same
> way.  Yes, the GPIB chips are installed in both units and the IRQ
> jumper is there.  When the serial poll is done by the controller I can
> see the DAV line wiggle in the 2110, but nothing else seems to happen
> (no interrupt or acknowledge from the 68488).
>
> If anyone has any experience with these units and GPIB any help would
> be appreciated.
>
> Thanks in advance.
> Skip Withrow

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