Warning: Do not look through the viewfinder under strong light sources such as sunlight.
3. After the alignment using the viewfinder, make adjustment with the voltmeter for more accurate optical
alignment.
a. Set the voltmeter range to 5 to 10 VDC.
b. Insert the voltmeter's positive pin into the positive terminal of the monitor jack, and the negative pin
into the negative terminal.
c. Aim to achieve a monitor output level of "Excellent", or 2.8 V or more.
3. Adjust the horizontal and vertical angles while checking the Level indicator LED on the pairing receiver.
Level indicator
LED
Adjustment level
Monitor jack
output
Note: The Alarm indicator and Level indicator LEDs are supporting tools for easy alignment. Always perform
fine alignment with the monitor jack to ensure the maximum output level.
Beam
interrupted
ON (red)
Fast blink
Readjust angle
0 V
Beam received
Slow
OFF
blink
Fair
Good
> 1.0 V >
Excellent
2.4 V
> 2.8 V