FUTABA 12Z Series Instruction Manual page 68

COND.HOLD
speed of the engine so that you may adjust flight
conditions when the engine is running. An alarm
indicates that the function is operating. It will
prevent the engine from racing dangerously when
adjusting the Idle-Up settings.
While this function is active, the throttle servo
position is fixed at the point where you operate
when the function is activated. You must deactivate
this function when you are through making
adjustments.
The system will not allow you to activate/
deactivate this function in either of the following
states:
68 <Functions of Linkage Menu>
To activate/deactivate Condition hold:
(Home screen)
*When this function is active, "IS ACTIVE" appears at the
bottom of the [CND HOLD] display at the left bottom of the
screen.
(LINKAGE menu/MODEL menu)
*Operation is displayed at the bottom of the menu.
Function ON: "CND HOLD: ACT(ON)" is displayed.
Function OFF: "CND HOLD: INH(OFF)" is displayed.