Finally have my Black Box set up and it works very well. I do have a question about the probe port though. My cnc is completely made out of aluminum and every spot on it is grounded, I have only attached the signal pin on the probe output which is attached to an aluminum plate. I tested the probe function numerous times and it seems to work well. As the black box also has a ground pin, do I have to attach an additional line to my cnc when probing or is the common ground good enough. Thanks for your time. John
