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3-17190-01182-00 Rev. A
Garmin GTR 225/225A/225B Pilot’s Guide
3.5 Timers
The GTR 225 has both Count Up and Count Down timers, which may
operate simultaneously and are shown in the lower right of the Com displays.
The countdown timer always takes precedence if it is running.
3.5.1 Setting Up the Count Down Timer
1. Press FUNC to access the Functions. Turn the LARGE knob
to select the Timer (TMR) function. Turn the SMALL knob to
select either the Count Down Timer function. Now, press the
ENT key.
Select Count Down Timer
Figure 3-29 Select the Count Down Timer Function
2. Press the ENT key to Start or Stop the timer. Press the CLR key
to reset the timer to the starting value. Press the CURSOR knob
to select a starting timer value.
Press ENT to Start
or Stop the Timer
Push the CURSOR
(SMALL Knob) to Edit the
Starting Time Value
Press CLR to Reset the Timer
to the Default Value
The Default (Starting) Value
Figure 3-30 Selecting the Count Down Timer
3. Turn the SMALL knob to select the timer value and turn the
LARGE knob to move the cursor. After completing the time
setting, press the ENT key. Press ENT again to start the timer.
Press ENT to Accept
the Selected Value
Press CLR to Return
to the Default Value
Turn Small Knob To Select Time Value
Turn LARGE Knob To Move Cursor
Figure 3-31 Setting the Count Down Timer Value