Sharp PC-G850VS

[robve]

(06-08-2021 12:37 PM)rprosperi Wrote:  The Sharp cables CE-132T and 133T tend to work with more devices than the very early 130T.

The 132T uses an external ac adapter, so less flexible, but it is less dependent on power from the connected device.

The 133T is standalone, but in some cases cannot self-power from the connection.

Here's a cheap 133T for anyone looking for an Sharp 15-pin serial adapter:

https://www.ebay.com/itm/133672149943

Caveat lector+emptor: I also tried a CE-133T with no luck. The CE-132T could work since it's externally powered, but I don't know for sure.

Note that the CE-133T requires +/-7V input signal at minimum and +/-15V max (see the operating manual). Unfortunately, most USB RS-232C adapters offered online won't spec out the level or mention boosting. I got two USB adapters. One boosts the level to 6V, which is still insufficient.

A DIY adapter is out of the question for me, because I don't want to take the risk of ruining these 80s computers. If anyone is interested, a DIY 15-pin adapter is described here https://www.qsl.net/yt2fsg/pocket/pocket.html and here https://www.simon-lehmayr.de/e_pc.htm (click on PC-1350 then "Connections" at the top of the screen).

EDIT: please note that these adapters will NOT work with the PC-G850V but with older SHARP PC with a 15pin port! For details see https://sharppocketcomputers.com/#level

- Rob