N-A-M-E T-H-A-T C-O-R-D

#1 Sat, 30 Nov 2013 - 01:23 68kMLA

Here's another cord that I picked up. It says 'Motorola' on it. It goes from a serial plug to two 25-pin SCSI plugs, one male and one female. What could it be? :?:

#2 Sat, 30 Nov 2013 - 01:51 68kMLA

The external connector for a serial port can be either 9 or 25 pins. So I don't think that's SCSI, it's just 25-pin serial.

#3 Sat, 30 Nov 2013 - 02:37 68kMLA

A 25-pin serial connector actually has two sets of serial data pins, the main one and a “control channel” (can’t recall what the exact terminology was). Maybe this thing splits out the control channel into a separate plug? It uses the same signalling format AFAIK, so it should work.

#4 Sat, 30 Nov 2013 - 02:53 68kMLA

Probably just for old comm equipment.

#5 Sat, 30 Nov 2013 - 03:09 68kMLA

A 25-pin serial connector actually has two sets of serial data pins, the main one and a “control channel” (can’t recall what the exact terminology was). Maybe this thing splits out the control channel into a separate plug? It uses the same signalling format AFAIK, so it should work.

Interesting information, but I'm betting it's just a serial cable with both 9- and 25-pin connectors on one end. They're pretty common.

#6 Sat, 30 Nov 2013 - 05:49 68kMLA

The sticker notes it's a POWER CABLE, so it's probably neither for parallel , SCSI or Serial but something more proprietary that used D-sub 25 and 9.

#7 Sat, 30 Nov 2013 - 06:27 68kMLA

I've seen serial cables for POS equipment that have a power jack wire hanging off the DE-9 interface at the computer end for running a remote piece of serial connection hardware from a wall wart inside or underneath the terminal box. Could be something similar.

#8 Sat, 30 Nov 2013 - 07:06 68kMLA

I was thinking something for the Motorola Codex multiplexer boxes, etc.