[GreenKeys] UGC-136BX helpful hint #1

[Nick England]

If you get really desperate and read the manual, you might avoid my
frustration at getting my new toy working.

BITE was okay. Hooked TXD to RXD and got echoed characters okay. But I was
printing garbage from my test generator and eventually figured out I needed
to invert the signals. So I flipped the invert switch and nothing changed.
When is a switch not a switch? When it has to be read by software….

Time to RTFM - this thing has 3 ports and I was guessing that maybe one of
the unused ports was messing with Port 1
AHA! Table 2-4 starting at step 11
Yes Port 3 was set to Bulk Storage so I set it to N to disconnect it. No
joy. Keep reading.

Oh, you have to re-initialize a port after changing a configuration switch
(e.g. INVERT)
See steps 11-20
Hurrah, I can send and receive!
Now you too know how to invert signals if needed in your setup.

On to read more about messages, etc.
what fun!

No, I have no info on Bulk Storage or Page Display peripherals.

Nick England K4NYW
www.navy-radio.com


On Wed, Jul 23, 2025 at 8:30 PM Nick England <navy.radio at gmail.com> wrote:

> I have scanned the July 1991 edition of the UGC-136BX manual.
> To make things easier to print, I have also broken out separate files of
> the fold-out pages (some are 11x48) and the letter-sized pages (8.5x11).
> The complete thing is about 300MB. Links are at
> https://www.navy-radio.com/tty/ugc136.htm
>
> Please let me know if I need to re-scan anything.
>
> Have Fun!
> Nick England K4NYW
> www.navy-radio.com
>
>
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