[Simh] NH14 and TR01

[Paul Koning]

> On Feb 27, 2016, at 5:00 PM, Timothe Litt <litt at ieee.org> wrote:
> 
>> Timothe, 
>> 
>> 
>> This list that you published an excerpt from, it it available online somewhere? 
>> 
>> I am curious to understand what the DEC options NH14 and TR01 were?
>> 
>> Are they listed there as well?
>> 
> 
> 
> <cgigidfc.png>
> 
> I don't have info on the NH04...but we know that N* is "pulse height analysis equipment".  But if we look elsewhere, we
> find:
> <icafdbha.png>

Pulse height analysis sounds like the sort of device you use to do gamma ray spectrography -- scintillators attached to photomultipliers, whose outputs are pulses with height proportional to the gamma energy.

> So the NH14 is a dual 12-bit Analog-Digital converter, built by DEC's computer special systems group in Merrimack, NH.

CSS was in Nashua, next doors to the FAA "Boston Center" ARTCC facility.  It's now partly a billiards club and partly a vacuum technology company.  Merrimack was the home of "Comm Engineering", RSTS development, Typeset-8, Typeset-11, Assist-11, WPS-8, PDP-15 software support, Telephone Products Group (later Ultrix engineering) before that moved to Nashua Spit Brook Road.  Merrimack was the first large DEC facility in NH, and according to legend, the place where Ken Olsen took Mass. governor Tsongas with the DEC helicopter, saying "this is where we're moving all of DEC unless you do something about Mass. taxes".  But he did not follow up on that threat.

	paul