Section #4 – Instrument Tests
34
Electronic Copy of LTI's UltraLyte LR B User's Manual - 2
nd
Edition © 2002
TEST
Scope Alignment
The 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. This sections includes the Scope Alignment Test and
the Scope Alignment Procedure. LTI suggests that you do this test
periodically. The Scope Alignment Procedure will only be necessary if
the Scope Alignment Test shows that the scope is out of alignment.
Scope Alignment Test
This test uses sound to indicate when the scope is on-target. Refer to
the instructions below to do the Scope Alignment Test.
1.
Select a target. Choose a prominent target with well-defined
horizontal and vertical edges. 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. A telephone pole is an excellent
choice. 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 UltraLyte LR B is powered ON.
3.
Press the
TEST OPTIONS button
two times to activate the
Test Tone display screen. It should look like Figure 24.
Figure 24. Test Tone Display Screen
