Has anyone used an Acu-Rite glass scale with the Position-Trac feature as a an absolute reference? Position-Trac encodes the absolute position of the axis into the reference output. Rather than a single pulse at the center of the scale, it has the absolute position encoded on the reference track so that upon powerup, the current position is known. I want to know how it is coded on the scale and how to use it.

I couldn't find anything at the Acu-Rite site. Tech support did not know.