Carson CG-1 Instruction Manual page 19

A B
GB
If the rotation direction for the tail servo created by the gyro CG-1
runs precisely against the directions as illustrated, you can change
the rotation direction of the tail servo.
The switch reacts to the rotation direction created by the gyro
only. The control pulses, created by the sender, remain unaffected
and are passed on to the tail servo 1:1. The switch for the servo
rotation direction (see page 18, (6)) is on the right side of the gyro.
Depending on the requirement, you can set the rotation direction
from A (normal) to B (reverse). Take a small settings screwdriver to
operate the switch, if required.
19
CARSON Gyro 507027