[WT-support] Parallel-Port question WT & TS 850

[Lorenz Grassl]

Hi Ulf,

> I think the problem is that the old computer and the
> notebook are working on different voltage levels.
> The old computer has 5 volts, where you also can get some
> current, while the notebook should have only 3.3 volts with
> much less current avaliable. So maybe you can check the
> LCU-interface, if you can lower a resistor which drives the
> optocoupler.
>   
An interesting thing you say. I just opened the interface but I found no 
resistor at all. Just the optocoupler, a C and a diode.
But the voltage could be the problem.

73 de Lenz
DL8RDL