Dual Loop Detector LD0l
User Manual
CH1
SW6
sws
CH2
SW4
Off
SW3
Off
- Higher
On
Off
-High
Off
On
-Low
On
On
- Lower
3.3
Automatic Sensitiviti Boost
Automatic sensitivity boost is a mode which alters the undetect level of the detector . This mode is selected by
switch No. 7 on the front of the enclosure and is set as follows:
SW7
Off
- Disabled
On
- Enabled
Automatic sensitivity boost causes the sensitivity to be boosted to a maximum on detection on the vehicle,
and maintained at this level during the presence of the entire vehicle over the loop. When the vehicle departs
the loop and detection is lost the sensitivity reverts to the pre-selected level.
3.4
Presence Time
The presence time may be set to permanent presence orto limited presence. In permanent presence mode
the detector will continuously compensate for all environmental changes whilst there is a vehicle present over
the loop. In limited presence mode there will be a finite time that the detector will remain in detect. This time
is dependent on the change of inductance that the vehicle caused. The presence mode is set with switch No. 8
and is set as follows:
SW8
Off
- Limited Presence
On
- Permanent Presence
3.5
Reset Switch
The detector automatically tunes to the inductive loops connected to it when power is applied, whether on
initial installation or after any break in the power supply. Should it be necessary to retune the detector, as may
be required after the changing of frequency switch selections or after moving the detector from one
installation to another, momentary operation of the
RESET
switch will initiate to the automatic tuning cycle.
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