Diablo Controls DSP-50, Руководство пользователя

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DSP-50 User Manual Page 11 of 27 DSP50_MAN_A
Frequency (DIP Switches 9 and 10)
When loops are installed sufficiently far apart, any two loops will not interfere with each other. However, if two
loops are fairly close together, say two to four feet apart, the inductive fields may couple together and may
interact causing intermittent false detections. The main variables for inductive coupling are loop size, distance
between loops, and the loop frequency. To aid in mitigating inductive coupling, each DSP-50 unit comes with
two frequency switches. They are binary coded allowing up to four different operating frequencies.
If there are suspicions that loops are interacting, change one of the detector’s frequency settings so that their
inherent frequencies are sufficiently different as to no longer interact. If the loops are the same size and
number of turns, setting one detector to high and the other detector to low will provide the maximum
frequency separation.
DIP Switch
Frequency
9 10
OFF OFF High
OFF ON Medium High
ON OFF Medium Low
ON ON Low
Factory Default
Loop / Magnetometer (DIP Switch 8)
The DSP-50 is capable of operating with either a standard inductive loop or the new mini-loop (magnetometer).
As usual, the inductive loop operates in both presence and pulse modes. However, the mini-loop
(magnetometer) can only operate in pulse mode and will automatically override any settings to the contrary.
The factory default is the inductive loop mode.
DIP
Switch 8
Loop Type
OFF Inductive Loop
ON Mini-Loop
Factory Default
NOTE: In the magnetometer mode of operation the detector will only hold a detection for 2 seconds. Therefore,
if a vehicle stays over the sensor for more than 2 seconds it may generate additional pulses for the same vehicle.
Normal / Extended Presence (DIP Switch 7)
After four minutes of continuous detection, the detector will begin to slowly retune the detector with the goal
of tuning out the vehicle that stalled or parked on the loop over a relatively long time. For those instances
where a longer hold period is desired, extended presence is available.