18 Apr
2009
18 Apr
'09
8:28 p.m.
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 =
there
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.
-tony