You guys got the correct pin out.
This link has lots of good info: http://www.doepfer.de/faq/gen_faq.htm#Sync
Expert sleepers also make a cable: http://www.expert-sleepers.co.uk/accessories.html
I made my own with a male midi plug and two 1/8th inch ends.
I send DIN sync out of the RYTM to my tip top trigger riot. It works perfectly.