Start.6 – Plug both USB cables into the camera battery pack

Only 1 camera turned on

1. Unplug and try again
2. Check all USB cable connections

No cameras turned on

1. Unplug and try again
2. Check the battery pack power level

Camera says TF card error

As long as it says REC there is no problem

Can I Trace a game with one camera functioning?

No. Both cameras need to work for the duration of the game.