ADJUSTMENT OF OPTICAL AXIS
(Aiming Beam)
1. Remove transmitter and
receiver covers and apply
power to the units.
2. In each unit, remove the
viewfinder from it’s normal
storage location and place
it, as shown, on one of the
holders on either side of the
lens. Use whichever side
permits sighting through the
viewfinder in the next step.
3. At the transmitter, look through the
viewfinder, with your eyes about 10 cm.
From it. Adjust the horizontal angle
bracket and (with a small screwdriver)
the vertical angle screw. When the
transmitter’s optical axis is properly
adjusted, the image of the receiver will
be seen in the center of the viewfinder.
4. Repeat step 3, but at the receiver.
When the transmitter’s image is seen in
the center of the receiver’s viewfinder,
the receiver’s GOOD (green) monitor
LED should be on as confirmation of
proper alignment (if off, carefully repeat
steps 3 and 4).
NOTES:
The brightness of receiver’s
LE EL (red) LED will vary with
the accuracy of alignment. The
better the alignment, the brighter
the LED.
ertical Alignment
To Raise To Lower
The best adjustment of optical axis can be done by reading the output
voltage of the monitor jack.
1. Insert the meter pins into the monitor jack. (Pay attention to the polarity
because of DC voltage.)
2. a) Adjust the horizontal angle bracket until the output is at maximum.
b) Adjust the vertical angle screw to obtain maximum signal. (Do not
interrupt beam by hands during the adjustment.)
3. The minimum voltage (2.3 ) should be obtained to ensure best perform-
ance. (If this is not obtained then Transmitter and Receiver should be
re-aligned.)
