Hi Staffan
The physical layer for IEE-488 itself is essentially unchanged from
the original.? 488.2 deals more with the messaging protocol.
This is where all the "universal" commands originated (all the *
commands like *IDN?, etc.).
If you saw my PM to you a bit ago, you saw an example of a
"non-488.2" communication using the Agilent IO libraries.? In other
words, those nifty commands are not available to the old "R2D2"
command structure instruments.? I guess I'll include that listing
here, for others to see as well.? This code sets up and gets
readings from an HP3478A voltmeter, which is pre-488.2 (R2D2
"language")
Daun
Daun E. Yeagley II, N8ASB
On 11/19/2018 4:01 PM, Staffan wrote:
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Hello,
Many thanks. Notice that I replied to your direct mail. I don't
think the problem lies in the 436, but rather in how the USB
dongle 82357 performs communication. Don't know if the GPIB
standard was updated - 488.2 seems to be from 1992, whereas the
instrument predates 1980. It would be great to have a
configuration within VISA to support different standards for
different instruments - or is this perhaps not needed? Sounds
strange that there shouldn't be sufficient backwards compatibility
for a data bus!
Regards,
? Staffan
