User's Manual
59
6.
Then grasp the high-speed tuning fork (the shorter 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.
7.
Then before the high-speed fork stops vibrating, tap the low
speed fork (the longer fork) against a firm surface, and hold it
approximately three inches away from and slightly above the
first fork.
The speed produced from the high-speed fork (shorter
fork) will appear in the PATROL window, while the calculated
TARGET speed will appear in the TARGET window.
8.
Press and release the FAST button to toggle between the FASTER
or SLOWER settings.
When the FASTER setting is active, the
TARGET speed should be the sum of the two tuning fork speeds.
When the SLOWER setting is active, the TARGET speed will be
calculated by subtracting the speed from the low speed fork
from the speed from the high-speed fork.
9
.
T
he
speeds
should
ma
t
ch
those
in
Figur
e 9
.
6
.
2b
and
9
.
6
.
2c
.
10.
Press the test button to exit tuning fork mode.
Figure 9.6.1b
When testing the Ka-band directional antenna with the high and low tuning forks with
slower setting enabled (FAST button NOT lit), the speeds in the display windows should
look like this.
(The FAST light is off because the target speed is
lo
w
er
than
the
pa
tr
ol
speed
.
)
Figure 9.6.1c
When testing the Ka-band directional antenna with the high and low tuning forks
with FASTER setting, the readings should match this.
G3 ™ User & Installation Manual