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Hi all 
I need to order a 7i73 and shipping is $90 USD to get it to Qld Australia. This may be the unavoidable cost but I can't justify it for a $49usd board.
I'm happy to wait a couple of months if necessary and combine freight with others ordering from Mesa.
If your considering ordering and would like to combine our orders and split freight costs PM me. 
Cheers Brad.

Fixed the link formatting.

Not sure what has happened to that link? but it still works?

Hi Stenly, I bought these Signal converter . They cost a lot more than I wanted to spend but at the time I thought I was going to get it going quicker. Approx $130USD each. The Aikron ones might be worth the gamble. Or if you are more tech savvy than I am currently then the ones jochen has linked would be a option. Here is their reply to my email for the ones I bought.

"Your calculations are very helpful.  The HEIDENHAIN LS 486C has a 20µm resolution glass which, as you correctly calculated, will produce a 10Khz signal at 12m/min.  I have attached a data sheet showing the federate limits of each interpolation version for your reference.  You can choose any interpolation option from 0.5x to 5x.  The 5x interpolation model (SA 1872) will provide you with a 1µm TTL output signal. "

In all likelihood they just have the chip jochen has linked

Got it to build. The install script, as far as I can tell it doesn't bring in libclothoid3d and libscurve
When I did that manually (path here forum.linuxcnc.org/38-general-linuxcnc-q...orm?start=170#323932) and copied that to the empty directories the code builds.

Thank you! That did the trick!
I'm currently getting familiar with the HAL Scope.

After displaying the encoder position and the stepgen feedback position, I noticed that the stepgen was counting positive while moving in the positive direction.
I corrected this by adding a minus sign in front of the STEP_SCALE.

However, this caused the motor to spin in the positive direction during homing.
I fixed that by removing the negative signs from the homing and latching velocities.
There probably is a nice way to fix that, isn't there?

Edit: I've added working .hal and .ini files for future Reference. (only X has encoder feedback)