I have a couple of these LAN Cablemeters with no remotes. I hope that someone may have these, and would be willing to take some measurements, as the pin outs previously shown here for the 683 model does not work for this model.
In experimenting with these, one thing that I have noticed is the fact that the 180.7K resistor across pins 1 & 2 will show "No Cable." Other values, both higher and lower will read as an impedance error.