Nortech PD230 Enhanced Vehicle Detector, Руководство пользователя

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302UM0017 Rev 01 PD230 Enhanced Detector User Manual Page 33 of 37
8. CUSTOMER FAULT ANALYSIS
8.1 Fault Finding
FAULT CAUSED BY REMEDY
Red LED does not glow on
power up
If the indicator is off then there
is a fault on the power
connection to the unit.
Check power feed to the
unit.
After the initial tune period the
Ch1 and/or Ch2 indicator is
green. Turning off for half
second periods.
Unit cannot tune to the loop
due to faulty loop or feeder
connection.
Loop may be too small or too
large.
Faulty detector unit.
Check loop installation
and connections.
Recut as per installation
instructions.
Replace unit.
After tuning, the loop output
LED’s flashes intermittently
and the relay chatters
The loop is getting spurious
detects due to:
a) Crosstalk with
adjacent detector.
b) Faulty loop or feeder
connection.
a) Change frequency
setting.
b) Check that the
feeders are correctly
connected and
adequately twisted.