User's Manual

57
9.5 Moving Mode Opposite Direction Test
1. Place the system in Moving Mode Opposite Direction.
2. Select maximum range and activate the antenna that you want
to test.
3. Grasp the low speed tuning fork (the longer fork) by the handle.
Tap the tines of the fork against a firm surface and hold it
approximately three inches in front of the antenna.
4. Before the low speed fork stops vibrating, tap the high-speed
fork (the shorter fork) against a firm surface, and hold it
approximately three inches away from and slightly above the
low speed fork. The speed produced from the high-speed fork
(shorter fork) will appear in the TARGET window, while the speed
from the low speed fork (longer fork) will appear in the PATROL
windo w .
2
Figure 9.5a
Hold the low speed fork approximately three inches in front of the
antenna and hold the high-speed fork approximately three inches and
slightly above the low speed fork.
5 . T he speed should ma t ch those in figur es 9 . 5b .
2
The speed displayed will be the difference between the speed stamped on
the high speed and low speed tuning forks.
G3 ™ User & Installation Manual