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[aprssig] Re: APRS Standard Connectors?

Curt, WE7U archer at eskimo.com
Wed Nov 30 17:52:12 UTC 2005


On Wed, 30 Nov 2005, Bill Vodall wrote:

> I guess if the pin is typically an output and the voltage available
> would seem to be just a "stuck high/low" condition it would be fairly
> safe.

The voltages are fine, it's the currents that could cause a problem.
RS-232 drivers are supposed to be current-limited at 7mA or so per
pin as I recall.  You may end up connecting devices that depend on
that limit to prevent damage.

--
Curt, WE7U.   APRS Client Comparisons: http://www.eskimo.com/~archer
"Lotto:    A tax on people who are bad at math." -- unknown
"Windows:  Microsoft's tax on computer illiterates." -- WE7U
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