27 Jun
2016
27 Jun
'16
8:59 a.m.
On 06/27/2016 05:34 AM, Paul Koning wrote:
How high was "too high"? The RS232 standard
rules for allowed output
voltages are surprisingly lenient (3 to 15 volts, positive or negative
for space and mark respectively).
Mark (not space) was around +3V, ha :-) I have no idea how the VT52 was
making sense of that, but it was, quite reliably.
--FritzM.