National Geographic 3X25 Mode D'emploi page 13

Operation
Line up the device with an object that is 20-30 metres away. Look through
the eyepiece (3) and turn it until the black frame of the screen is clearly
visible. Adjust the focus to ensure a clear image of the object by turning the
objective lens (2). When adjusting the observation distance, you will achieve
a higher quality image simply by turning the objective lens (2). No further
turning of the eyepiece (3) is required, your device is now set-up and ready
to use.
Multifunction button (3 functions):
• Power On
• Automatic Power Off function (APO)
• Power Off
Power On: The device can be turned on by pressing the button for
1-2 seconds. The status LED will start flashing green at 1-second intervals
when the power is on.
Automatic Power Off (APO): When the APO function is turned on, a short
press (less than 1 second) of the button switches off the APO function. If the
APO function is switched off, the green status LED will remain lit instead of
flashing.
Power Off: Press the button for 3 seconds to switch off the device.
When the APO function is off, a short press of the button (less than 1 sec-
ond) is sufficient to power off the device.
Note: When the device is switched off, long presses of more than 3 seconds
will be treated as operating mistakes and the device will not turn on.
Multifunction button (3 functions):
• Infrared illuminator On
• Increase brightness of the infrared illuminator
• Increase brightness of the image display
Increase brightness of the infrared illuminator: When the infrared il-
luminator is switched off (red status LED off), a single press (more than 1
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