Ever hear someone say "do a loopback check" on your vibration controller and wonder what that means? Well it's a great way to troubleshoot your vibration system by isolating the controller from the shaker/amplifier. Performing a "loopback" means running the output of your controller to the input of your controller, taking the shaker/amplifier out of the equation. Sometimes your shaker may not behave as expected, and you need to know if it's the controller telling the shaker to run that way. Run a "loopback" check and compare the results to when the controller was connected to the shaker/amplifier. If the "loopback" results look ok then take a closer look at the shaker/amplifier to correct the problem.
