Can someone give me a definitive answer as to what constitutes pin 1
of a serial port at the computer, looking into a horizontally mounted
female receptacle from the outside.
The Web comes up with such descriptions as 'looking at the pin
insertion plane' and 'looking into the plug', whatever that may
mean. Pin insertion planes mean nothing to me, only the soldering
side and the other side.
I'm fairly sure pin 1 is top left on both 15- and 9-pin
horizontally mounted sockets (on the computer), as these seem to give
the most reasonable voltages at the other end of a serial cable, but
I have been unable to confirm this via Google.
Take a magnifying glass and take a look at the plug/socket and you
should be able to see the pin numbers stamped alongside.
Re: Serial Port Pinouts ... of a serial port at the computer, ...female receptacle from the outside. ... The Web comes up with such descriptions as 'looking at the pin...insertion plane' and 'looking into the plug', ... (uk.comp.misc)
Re: Serial Port Pinouts ... of a serial port at the computer, ...female receptacle from the outside. ... The Web comes up with such descriptions as 'looking at the pin...insertion plane' and 'looking into the plug', ... (uk.comp.misc)
Re: Alpha DB9 to DECserver RJ45 cable? ... > a straight or crossover network cable.... plugging into a PC serial port, that also works fine with a serial port ... 16-line (no modem control) version of the DS700. ... to pin 5 and the other one would only work with Tx Gnd ... (comp.os.vms)
recording hardware discrete via serial port? ... The discrete signal will either be 14V or 0V. ... I've set up a test where I can put 12V into a serial port line, ... can't make perl see it. ... with the ground hooked to pin 5 of the ... (perl.beginners)
Re: Log Phone Calls ... In that I would have to get a 25/9 pin serial cable to be able to ... Many centuries ago, the serial port on many ... communication devices was standardised to a 25 pin/socket connector,... and 3 (no pins in these cables) were swapped, and a heap of others were ... (microsoft.public.vb.general.discussion)
