FUTABA 16SZ Instruction Manual page 167

Governor
When using a Futaba governor, this function is
used to switch the RPM of the helicopter's head.
Up to 3 rates can be set for each condition.
*The governor is used by connecting the governor speed
setting channel to CH7 (initial setting).
*When using an independent governor [ON]/[OFF] switch,
connect the AUX([ON]/[OFF]) connector of the governor to
CH8 (initial setting) and set the switch to CH8 (Governor2)
at the Function menu of the Linkage menu.
RPM adjustment
Fine tuning VR settings
Unit display selection:
Setting method
*When the function is set ON/OFF at the governor setup
screen, the governor rpm setting channel end point servo
travel and limit point are now initialized.
*When changed from INH to ACT (ON), the servo travel is
initialized to 100 and the limit point is initialized to 155.
*When operation is changed to INH at all conditions, the
servo travel is initialized to 100 and the limit point is
initialized to 135.
168 ＜ Model Menu (Helicopter Functions) ＞
[%] [rpm]
*When using the Fuel Mixture function, the mixture servo
is controlled from the governor. When transmitting the
mixture curve data from the transmitter to the governor, the
governor AUX (m.trm) connector must be connected to CH8
(initial setting) and governor side setting performed. See the
governor instruction manual.
*When the value is tapped reset to the initial value.