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From: rew@cbosgd.UUCP (Bob Warren)
Newsgroups: net.cog-eng,net.research
Subject: Polytronics still in business?
Message-ID: <2378@cbosgd.UUCP>
Date: Thu, 7-Aug-86 08:54:26 EDT
Article-I.D.: cbosgd.2378
Posted: Thu Aug  7 08:54:26 1986
Date-Received: Sat, 9-Aug-86 04:12:08 EDT
Distribution: na
Organization: AT&T Bell Laboratories, Columbus, Oh
Lines: 18
Keywords: Timing, URT
Xref: watmath net.cog-eng:737 net.research:528

After many years of faithful service my Universal Response Timer
(Model 401A) has started sending out gibberish instead of timing
information.  The URT plugs into and camps on the RS-232 line between
a terminal and a computer.  It has a millisecond clock in it that
is reset to zero every time a character is sent downlink from the computer
to the terminal.  Whenever a character is sent uplink from the terminal,
the elapsed time in milliseconds since the last downlink character is
appended to the character in the form "x,1234<CR>".  I've been using
it to get response latencies to terminal displays.

The URT was manufactured by Polytronics (Methodist Hill-Lebanon, New Hampshire),
but my initial attempts to contact the company have proved fruitless.
Does anyone on the net know if the company still exists and if so how I
might get in touch with them.  I am interested in buying a new URT, or
an equivalent replacement.

Bob Warren
cbosgd!rew