[Info-vax] VAX RDMs (Remote Diagnostic Modules)

[Bob Koehler]

In article <1c7dp8-e55.ln1 at Ubuntu.mike-r.com>, Henry Crun <mike at rechtman.com> writes:

> Actually I seem to recall (could be wrong, though) that LA36's were current 
> loop, and could not talk to a standard modem. You would probably need an LA120, 
> or (slower) LA70(?)
> I remember the RDM on a PDP 11/70 - DEC could only dial in if we switched from 
> local to remote console (IIRC a rotary switch on the front panel)

   Our LA36 and LA120 were current loop, because that's what out VAX
   11/780 and various PDP-11 required as consoles.  But the LA120 was
   available without the current loop option, and I think the LA36 was,
   too.