Overclocked TI Silent 703 at 1200 bauds?

[CuriousMarc]

It may very well have the double head. It's not dropping any characters at
1200. I am surprised. That's 4x the expected speed!
Here is another sighting of a Silent 703 working at 1200 bauds:
https://ronsapartment.blogspot.com/2018/06/altair-duino-and-ti-silent-700.ht
ml
Says the author in the comments: "My Silent 700 came with a manual. So I
went by that. I was pleasantly surprised that my Silent 700 had the "high
speed option"."
So there was a high-speed option for the Silent 703 apparently?
Marc

> -----Original Message-----
> From: James B DiGriz [mailto:jbdigriz at dragonsweb.org]
> Sent: Friday, October 29, 2021 10:01 PM
> To: cctalk at classiccmp.org
> Cc: CuriousMarc
> Subject: Re: Overclocked TI Silent 703 at 1200 bauds?
> 
> On Fri, 29 Oct 2021 20:35:50 -0700
> CuriousMarc via cctalk <cctalk at classiccmp.org> wrote:
> 
> > I recently acquired a TI Silent 703 on ePay and just fired up. It
> > worked right away. But I expected it to work at 300 bauds as
> > advertised, and to my surprise, it clocked at a the head turning
> > speed of 1200 bauds! Did they hot-rod it later in its product life?
> > It says MODEL 703 at the back, part no. 2310503-0010. I did not open
> > it up yet.  Is this a hardware mod? Is there an internal switch that
> > can toggle it between 300 and 1200?
> >
> > Marc
> >
> 
> I'm drawing a blank on that PN. I'm scanning in the 1985 TI Express
> Catalog right now and it only lists the 2310503-0001. I think there is
> an int'l version -0003.  Even if the serial port would work at 1200,
> though, the printhead only does 45 cps. Pic of a supposed -0010 on
> Worthpoint, but I don't subscribe for details or confirmation.
> However, it would have to have something like the 2 char thermal
> printhead in the 780 series to print without buffering at 1200 baud, I
> would think. Dig some more in daylight.
> 
> jbdigriz