Remapping the HP150 keyboard
ard at p850ug1.demon.co.uk
Sat Apr 18 15:28:38 CDT 2009
> And now something completely different......(free after monty python)
> Did you ever use the HP 59401A HP-IB analyzer ?
Yes, I have one, and have a fair idea how it works.
The lower PCB is the PSU (the +5V switching regulator is somewhat odd),
the data capture RAM and data path circuits
The upper PCB contains 2 seaprate sections. The display driver in the
front left corner and the main control state machine, based round those 4
ROM chips in the middle.
I can provide a _lot_ more info on it if you need it.
> It's fun to look at the HP-IB(us) the display flickers nice, but is =
> realy meaning full use for these analyzers ?
It's not very useful for mass stroage devices (it can't hold enough data,
and if you single-step it, the host connected to said mass storage device
generally times out and gives an error). But I've found it very useful
for examping data to/from HPIB instruments, and for testing HPIB
interfaces, printers, etc.
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