hilpert at cs.ubc.ca
Sat Feb 24 03:33:38 CST 2007
Tony Duell wrote:
> You _will_ lose the digitising functionality if you use the HPIB
> connector and set the machien to 'listen only' (if you can do that, most
> HP HPIB plotters do have that feature). In that mode there is no way the
> plotter can output data.
Of no relevance to me.
> If the 9872 is like that, it should be very easily possible to work out
> what the 9815 interface is doing, since presumanbly it's also mostly
I had no qualms or questions about what it is doing, it appears quite
> handled in hardware, possbily even much the same hardware. From what
> you've said, it must be more than just a listen-only (unaddressable) HPIB
> interface, since the plotter can send data back to the 9815
Try re-reading my previous replies. You're making it more complex than it is.
The 9815 interface connection consists merely of:
- the 8 HPIB data lines (bidirectional)
- the 3 HPIB handshake lines (bidirectional)
- a reset/device-clear line
- a static 9815-mode assertion line
In other words: un-addressed talk/listen HPIB-style data transfer.
More information about the cctech