Geoff G3ROG -
At last found time to getting the Digimaster working, alongside the N1MM logger. It appears to be plug-in compatible with the Winkeyer I borrowed; though you mentioned it was not designed for Standalone mode, it works nicely as such, plugged in to the USB port of my TS-590S. Well worth the investment particularly as the Winkeyer, with Customs duties including VAT and shipping to the UK is getting on for £100..
IP : 184.108.40.206