Section #3 - Test Mode and Instrument Tests
Page 25
Scope Alignment Test
Scope alignment is set at the factory when the instrument is shipped. A heavy
blow is the only reason that the scope might ever go out of alignment.
LTI suggests that you do this test periodically.
The Scope Alignment Test uses sound to indicate when the scope is on-target.
1. Select a target. Choose a prominent target with well-defined horizontal
and vertical edges. A telephone pole is an excellent choice.
¶ Recommended distance to target: 650 feet.
¶ The target's reflective qualities and distance should be such that you
can clearly hear a change in pitch of the test tone as you pan the
instrument over the edges of the target.
¶ Make sure there is nothing behind the target that the instrument
might detect, so you know without a doubt that any change in pitch
is due strictly to the target.
2. Ensure that the TruSpeed is powered ON.
3. Press the button two times to activate
the Test Tone display screen. It should
look like Figure #21.
4. Scan the target. Press and hold the
TRIGGER while panning the instrument
across the target. The tone changes pitch
when the instrument acquires the target.
The highest pitch - the on-target tone -
should occur when the in-scope aiming
reticle is centered on the target. Scan the
target both horizontally and vertically.
¶ If the frequency drops off at equal distances from the center of the
aiming reticle, the instrument needs no adjustment.
¶ Otherwise, contact Laser Technology, Inc. for assistance with
re-aligning the scope. See the inside front cover for LTI contact
information.
L
When checking vertical alignment to a close target, be aware of the
offset between the center of the scope and the center of the transmit
lens, which is 2 inches.
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