Simrad IS20 Manual page 29

Resetting the timer
A stopped or paused timer is reset to the pre-set
countdown time by pressing the Reset soft key.
Synchronizing the timer
The countdown timer may be synchronized to the nearest
whole minute at any time by pressing the Sync soft key.
The synchronize soft key will not appear if the counter has
turned zero!
Freezing the display
The timer display may be frozen at any time while the
timer is running. When the display is frozen the timer
remains counting in the background.
Freeze the timer display by pressing the Freeze soft key.
Re-press the Freeze soft key to return to the countdown
view.
− The Freeze soft key will
appear as depressed
The log/timer function | 29