Kustom Signals Golden Eagle II Operator's Manual page 37

Section 6--Testing Procedures
10. Lightly strike the lower speed tuning fork on a hard,
non-metallic surface. Place it approximately 1 inch in
front of the antenna. Verify that the patrol speed
displayed is the speed stamped on the fork. While
holding the lower speed tuning fork in front of the
antenna, lightly strike the higher speed tuning fork on a
hard, non-metallic surface and place it in front of the
antenna at the same time.
The TARGET speed window should read the difference
of the two forks. Example: closing speed (55), minus
patrol speed (30), equals target speed (25).
6.5.1. Same Direction Tuning Fork Test
1. With the Golden Eagle II in the moving mode, use the
FRNT/HOLD or REAR/HOLD switch to select the
proper antenna, depress the SAME/OPP switch to place
the unit in the Same-Direction mode.
Select
Antenna
FRNT
HOLD
REAR
HOLD
2. If the unit has "DCM" antennas, and not still in TEST
mode, press the TEST switch to enter the TEST mode.
The STPW/TEST indictor will be flashing while in the
TEST state. The radar system will remain in the TEST
state for 30-seconds. Note: pressing the TEST switch
while the unit is in TEST mode will cancel the TEST
mode immediately.
Select
Select
Same
Moving
Direction
SAME
MODE
6.6
OPP
or