It may be low voltage AC and ground or it may be +5V and a high voltage for programming
and a return ground. You might look inside to see what the wires lead to. Most all warts
don't provide regulated voltage levels but some do. If it provided regulated levels,
there would be a direct connection for the ttl to +5V.
Dwight
________________________________
From: cctalk <cctalk-bounces at classiccmp.org> on behalf of Al Kossow via cctalk
<cctalk at classiccmp.org>
Sent: Monday, September 14, 2020 12:24 PM
To: General Discussion: On-Topic and Off-Topic Posts <cctalk at classiccmp.org>
Subject: ISO Advantech Labtool-148C prgrammer wall wart specs
I just bought one of these thinking it ran off 110, but it uses a 3 pin wall wart.
Does anyone have one of these and could tell me the voltages it supplies.