Dear Pierre
here is a brief history for the IB buss
The original bus system, designed by Hewlett
Packard (today the Test & Measurements divisions name is Agilent Technologies),
was called HPIB, a short form for Hewlett Packard Interface Bus.
Because of its success and proven reliability,
in 1973 the HPIB bus became an US standard, introduced by the IEEE.
Since then, the name has been GPIB, for General Purpose Interface
Bus. The standards number is IEEE 488.1.
In parallel, the International Electronic Commission
(IEC),
responsible for the world-wide standardization, approved the standard
and called it IEC 625.1. Due to the introduction of a new naming scheme
for all standards, it was renamed to IEC 60625.1 later.
There was a slight difference between the IEEE 488.1 and IEC 625.1:
The IEC 625.1 standard used a 25 pin DSUB connector
for the bus, the IEEE 488.1 standard favored a Centronics-like 24 pin connector.
Today, the 24 pin connector is always used, but there are also adaptors
available in case older instruments are equipped with a 25 pin DSUB connector.
For these historical reasons, there exist several names for the same interface.
the GPIB as you can figure out is the globalized standard for instrument control, and was born from the HPIB ,
so according to my humble experience in instrument control , the GPIB is backward compatible with the HPIB based instruments, but i'm not sure that you might need an adaptor in case of different PIN assignments.
Regards...
Mohammed Ashraf
Certification and Testing Engineer
Eng. Mohammed Ashraf
Certified LabVIEW Associated Developer
InnoVision Systems Founder, RF Test Development Engineer
www.ivsystems-eg.com