DSP-10 User Manual
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DSP10_MAN_C
manhole covers can be bolted in place. Contact the owner of the manhole to see what can be done to mitigate
the cover movement.
Detect LED Will Not Come On With a Vehicle Present
The first thing to do is verify that the LED in question is still working. This is accomplished by a quick lamp test.
Reset the detector by temporarily changing DIP switch 1. Both LEDs should turn off and turn on. If the Detect
LED does not illuminate, replace the detector.
If the red LED illuminates, then perhaps the sensitivity setting is too low. There are many variables in
determining overall sensitivity: loop size, number of turns, loop lead-in, percent coverage, etc. In most cases, a
sensitivity setting of 5 is the correct setting. However, to compensate for some unusual loop geometries, this
setting may be inadequate. Adjust the sensitivity one level higher and recheck the detector for proper
detection.
If the channel sensitivity is set to 9 and the red LED still does not come on and you have another operating
detector in the same box, swap the loops between a working detector and a failing detector. If the problem
follows the loop the loop is the problem. If it stays in the same detector, replace the detector.