Running Labview 8.2 on MacOS X.4 with the latest PCI/X-GPIB card to a Spex / Jobin-Yvon monocromator. The interface handshake fails on first character sent to the device (TIMO). Using an older PCI-GPIB card (physically larger, I don't see how to differentiate between cards) with G4 MacOS X.4, this handshake is no problem. I admit the Spex interface probably hasn't been changed in 15 years!! Other devices (newer) on the same bus communicate reliably with this latest PCI-GPIB/ OSX.4
Robin