TI Silent 700

From: Fred Cisin <cisin_at_xenosoft.com>
Date: Thu Feb 25 11:42:50 1999

I used to have a 745 about 20 years ago. I eventually gave it to
somebody who needed it more than I.

There was a jumper inside that controlled whether the modem and terminal
sections were connected to each other. By setting that, (I do not
remember which jumper) I was then able to cable the terminal to operate
as a printer for a TRS-80, as well as using the modem for the TRS-80. By
making up a special loop-back cable (in the connector hood), it was still
possible to use the modem and terminal with each other.

Be aware that there are a number of variant models, with differing features.

--
Fred Cisin                      cisin_at_xenosoft.com
XenoSoft                        http://www.xenosoft.com
2210 Sixth St.                  (510) 644-9366
Berkeley, CA 94710-2219
On Wed, 24 Feb 1999, Marvin wrote:
> Rick Bensene wrote:
> > 
> > The machine is a "Model 745 Portable" with built-in acoustic coupler
> > cups at the rear of the machine.  It works at 300 or 110 baud.
> 
> > The first question for y'all is this:  On the rear panel of the machine is
> > a DB-15 male connector...my assumption this is for hooking up a (RS232 or
> > current-loop) 'direct connection' to the terminal.  I don't have any
> > documentation
> > for the machine, and am wondering if anyone out there might know the pinout
> > for this connector.
> 
> According to the tech manual, it sounds like the port is the EIA/Auxiliary
> Coupler and the cable has one 15 pin connector attaching to the 745, and two
> other cables.
> 
> (Keyboard/Printer EIA Interface)
> P1-9  ..... P2-1   Protective Ground
> P1-13 ..... P2-2   Transmit Data
> P1-12 ..... P2-3   Receive Data
> P1-10 ..... P2-4   +12v to RTS
> P1-1  ..... P2-7   Signal ground
> P1-11 ..... P2-8   Data Carrier Detect
> P1-15 ..... P2-20  Data Terminal Ready
> 
> (Acoustic Coupler EIA Interface)
> P1-8  ..... P3-3   Receive Data
> P1-3  ..... P3-2   Transmit Data
> P1-1  ..... P3-7   Signal Ground
> P1-2  ..... P3-8   Carrier Detect
> P1-9  ..... P3-1   Protective Ground
> P1-6  ..... P3-5   Clear to Send
> P1-7  ..... P3-6   Data Set Ready
> 
> Hope this helps.

Received on Thu Feb 25 1999 - 11:42:50 GMT