Have you TRIED one of the Mac serial cables in this application (PC->LT-150)? When I built mine, it sticks in my head that the Mac pinout was different from the NEC. I could have read the wiring diagram wrong, though.
Take a 4-wire phone cord (8-wire stranded cat 5 cable also works but you need to put on an JR-11 4-8 connector on one end) and press one end into the converter. Remove the RJ-11 connector from the other end and solder three wires to the 8-pin din.
Actually, on further looking at the LT-150, the cable won't work out of the box. What I would recommend is buying a DIN-8 to DIN-8 cable, cutting it in half and putting a DB-9 on the cut end wired according to the LT-150 manual.
You can buy these cables at all online vendors that support Mac.
Good thinking! I have a cat5 cable attached to a RJ45 to DB9 and bare wires on the other side. It is a pain to try and get bare wires into the Din 8 connector on the NEC so I was looking for just the DIN 8 connector. Looks like the digikey link is the right connector! thanks!
I just brought the NEC manual to a local electronics hobby shop and they made me one for $10. Of course, it didn't work and I had to take it apart and switch 2 of the connections.
I am not sure if the guy at the store screwed it up (I brought it back twice and he swore that it was wired exactly as the diagram showed), or if the NEC manual had a printing error, but I searched the forum for possible solutions, switched 2 wires and it worked.
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