Optrex DMC20434: Anyone successful in using it?

Digging up old posts - OR - Keeping everything together: Your choice!

Anyway, thanks a lot for this timing issue, I’ll try it asap.
I have an Optrex with manufacturing code September ’89.

Please note that I got it to work in 4 bit mode but NOT in 8 bit mode.

Curious if this solves my problem too… …