Humminbird TCR ID-1 - Manual (Page 17)

USING THE TCR ID-1
BUILT-IN SIMULATOR
BUILT-IN SIMULATOR
To help you learn to use your new unit, Humminbird has built a simulator into the TCR
ID-1.The simulator will display a typical underwater scene, and allow you to use the
controls for practice.
Activating the simulator is easy - with the unit turned off, hold down the power button for
about 2 seconds, until a chirping sound begins. When you release the button, the built-
in simulator will be on and ready for your practice session. Turning your unit off and
back on again will disengage the simulator, for operating the TCR ID -1 in actual
conditions.
NOTE: The built-in simulator will allow you to practice adjusting the sensitivity,
but your adjustments will not change the readings being displayed on the screen.