19 Jun
2005
19 Jun
'05
12:53 p.m.
It's an HP 30151A or "ATP Expansion
Package". It appears to have 24 modems
Chuck Shimada says:
This is an external ATP port housing. It contains the
RS232/422 ports
which normally fit on the IO panel bays on HP 3000 Series 64, 68, 70,
58, 48, 44, 33 systems.
They were also used as the IO panel bay for the HP 3000 Series 52, 42,
40, 30.
There were cables which ran from the ATP cards to the chassis.
Each panel could handle four DB25 RS232 modem style or eight (?)
three pin ATP RS232 or 5 pin ATP (RS422?).
Stan
--
Stan Sieler
sieler at allegro.com
www.allegro.com/sieler/wanted/index.html