Sure, but I've not been able to test the unit outside since my IM809 became available. Winter weather here is rubbish (and very cold....).
A winter project for me at the moment involves putting together a circuit to generate 2000tic/rev TTL quadrature from the encoder to send to my Argo Navis. Some critical components arrive tommorrow after a bit of a lead time, these are significantly higher quality than those I could pick up at Radio Shack! I've also managed to find an ERN120 on ebay for $99 (and a spare for $20!) to fit on the DEC and am visiting a friend this weekend to get adapter components turned up. All with a view of having the TDM encoder serve double duty and the Argo Navis gets to see 20,000tic/rev on both axis.
The developer asked me not to reveal the TDM encoder model to anyone so please don't ask
What I will say is inspection of the TDM interior board component layout was enough for me to confirm in my mind roughly how things are being executed to achieve 0.125arcsec resolution. There's a few tricks that are very clever.
Cheers
David