Okay,
successfully shorted out the tx/rx pins on the serial/usb db9 connector & sent & received :GC# command.
So, it appears the adapter is working - Great news.
Carefully prised apart the db9/rj9 adapter & as far as I can tell it is wired as per your photograph.
Retested continuity, this was a bit tricky & I got patchy results. Sometimes I had continuity, sometimes I didn't.
This could be my dodgy technique or, it could be a dodgy cable with an intermittent fault somewhere in the cable perhaps.
I understand that other than buying another meade cable at price ridiculous, I might have another option in purchasing a telephone handset connector which I believe has an rj9 connection standard, then cutting off one end & soldering correct wires to a db9 connector as per your diagram. Would that work?
I will post this online as well so, any other interested folk can follow.
Cheers
Carlton
Quote:
Originally Posted by AndrewJ
Gday Carlton
They are the contacts, but there are plastic insulation strips between them
so you cant accidentally connect 2 together.
You need something that can get between the plastic strips.
The one on the converter will have pins, so just short pins as noted
( you can use a screwdriver for this )
To test the Meade cable, i normally push a dressmakers pin into the holes and then tape a dressmakers pin to the probe on my meter.
That allows the pin to get to the contacts in the RJ9.
Andrew
have attached the piccy of how the Meade adapter "should" be wired
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