Thicknet/10base5 Test Segment: The Cable is In!

[Chuck Guzis]

On 06/28/2018 09:45 AM, Eric Smith via cctalk wrote:

> Of course, this isn't specific to Ethernet. It can happen with e.g.
> TIA/EIA-232 (formerly RS-232) as well, and in fact that is even more common
> in practice, because Ethernet is transformer-isolated at each station, but
> TIA/EIA-232 is usually not.

So, on a TIA/EIA/RS-232C DB-25 connector, what's the official position
on pin 1?  The standards calls it PGND = Protective ground and most
reference seem to indicate that this is chassis/earth ground at both
ends of a cable.

--Chuck