Questions tagged [de9]

DE-9 is the correct designator for what is often mistakenly known as the DB-9 connector

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Can i replace a De-9 port with something else? [closed]

I was given an old piece of DJ equipment from the late 90s and unfortunately, the only way to connect it to a pc, which is what its meant for, is through a De-9 port/cable. And my pc doesn't support ...
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1answer
313 views

Is there a standard describing the UART data frame protocol?

The "U" in "UART" stands for "Universal", but I'm having trouble finding any standard that describes the framing protocol that's used in UART; e.g. the start bit, stop bit, parity options, and baud ...
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539 views

DE-9 monitoring solutions?

My treadmill connects to its controls via a DE-9 port interface and I'd like to reverse engineer it so I can control and monitor it via my computer instead. I would hope it perhaps uses RS232, but ...
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688 views

Why bridge the GND wire on a DE-9 connector?

Why would someone want to bridge the GND wire to the metal shield of a DE-9 connector? Take a look at the picture below. A 10 position flat ribbon cable is soldered to a DE-9 connector (male). On ...