Supertron sm1421 Monochrome monitor,DB9 pinout help needed \ VOGONS

Supertron sm1421 Monochrome monitor,DB9 pinout help needed

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First post, by MMG

Posted on 2025-03-11, 21:08

MMG Offline

Rank Newbie

Rank: Newbie
Posts: 10
Joined: 2024-07-19, 21:16
Location: Hungary

Hello guys!
Recently i got two supertron sm1421 monochrome amber monitor.
Problem is,cables are cut off....
The power cable easy to replace,but the video cable is more problematic,DB-9?
I cant find any manual from this.
I asking for help,how to reconnect.

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Reply 1 of 1, by Horun

Posted on 2025-03-11, 23:37

Horun Offline

Rank l33t++

Rank: l33t++
Posts: 6908
Joined: 2019-09-19, 02:19
Location: USA

Most of those are labeled and make sense. R - G- B, Gnd, H, V and I do. VI is most likely Video (TTL video). And the other pin by r122 that is the black wire, maybe another ground???.....

Hate posting a reply and then have to edit it because it made no sense 😁 First computer was an IBM 3270 workstation with CGA monitor. Stuff: https://archive.org/details/@horun

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