Section 12--Troubleshooting
12.2
No target speeds
during tuning fork
test (cont)
Verify the unit is NOT in the
HOLD mode.
Unsquelch audio. Listen for
Doppler tone.
Verify (moving mode) that patrol
speed is showing the correct
speed—30 or 35 MPH (45 km/h).
Lightly strike the tuning fork and
retest.
Remove unit from service if above
tests fail.
No patrol speed during
tuning fork test
Verify that the unit is NOT in the
HOLD mode.
If the antenna label reads “DCM”
the radar must be in TEST mode to
read tuning forks. Test mode can
be selected by pressing the TEST
button and is indicated by the Test
indicator flashing. The unit will
remain in TEST mode for 30
seconds.
Verify the desired antenna is
selected.
If speedometer input is used, press
TEST button before performing
any moving mode tuning fork test.
Verify the proper tuning forks are
being used.
Lightly strike the tuning fork and
retest.
Remove unit from service if above
tests fail.
