SAH ABT-60 Instruction Manual page 5

4
ADJUSTMENT OF OPTICAL AXIS
(Aiming Beam)
1. Remove transmitter
receiver covers and apply
power to the units.
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).
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 (2.3V) should be obtained to ensure best perform-
ance. (If this is not obtained then Transmitter and Receiver should be
re-aligned.)
and
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.
Vertical Alignment
To Raise
3. At the transmitter, look through the
viewfinder, with your eyes about 10 cm.
From it.
bracket and (with a small screwdriver)
the vertical angle screw.
transmitter's optical axis is properly
adjusted, the image of the receiver will
be seen in the center of the viewfinder.
To Lower
Adjust the horizontal angle
When the
NOTES:
The brightness of receiver's
LEVEL (red) LED will vary with
the accuracy of alignment. The
better the alignment, the brighter
the LED.