[Dx4win] DX4WIN with IC746Pro

[Jo, YC0LOW]

Hi all,
For CW use, I'd like to connect, via an interface,  my DX4WIN ver 702.15 in Toshiba notebook to straight CW key jack in the rear of Icom IC-746 Pro.

With simple interface circuit as written in its Help file, my DX4WIN worked okay in these years with my vintage FT1000MP for CW. But, with the Icom, it only produces 'dah'.

My notebook is running XP and has only one parallel/LPT port to use. 

Please help. TIA es 73 de Jo, YC0LOW