[Info-vax] vax4000

[Bob Koehler]

In article <j74nds$vou$2 at online.de>, helbig at astro.multiCLOTHESvax.de (Phillip Helbig---undress to reply) writes:
> In article <j74ctj$ijo$1 at speranza.aioe.org>, "nierveze"
> <nierveze at radio-astronomie.com> writes: 
> 
>> hello everyone
>> I have a vax4000/100 .I think of using it to drive a 7 feet dish (an old 
>> wheather radar) with two dc motors to move it in azim and elev and two 16 
>> bits optical encoders to get the position.Most of the thing is already 
>> built.
> 
> When I came to Jodrell Bank 15 years ago, most of the VMS machines were, 
> sadly, gone, but VAX machines (including a 4000) were still doing 
> telescope control.  I think they still are today.
> 

   A lot of lab equipment can be driven over an HP-IB bus, which became
   an IEEE standard, and for which Qbus interface boards were made. 
   Today, however, when we must deal with such equipment, we use third
   party ethernet <-> HP-IB interfaces.  I don't think DEC made a VAX
   4000 without a NIC.