" Your application would be a very specialized installation and programming.
GPB-1 box would allow for gyro setup, to include the channels used for gain control.
The CIU-3 USB device would be recommended as well, for when there are updates for the 553 and GPB-1.
You would not use the gyro menu for gain control, as the 10PX is not expecting 3 axis gyro."
Tony
So these pieces were ordered with the GYA 553 factory direct. It was 329.99 shipped.