DSP-100 User Manual
Page 12 of 25
DSP100_MAN_A
Figure 8: Power LED States
Detect LED
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The red detect LED is used to display the status of the A output. There are several different
statuses that can be displayed on this LED:
Off
No vehicle present in the detection area.
Reset in Fail-safe
At the start of a reset event (a DIP switch change, sensitivity change, or
power cycle) the LED will turn off for 500 milliseconds, on for 500
milliseconds, off for 500 milliseconds, on for 500 milliseconds, and then
finally display its normal state.
Reset in Fail-secure
At the start of a reset event (a DIP switch change, sensitivity change, or
power cycle) the LED will turn off for 500 milliseconds, on for 500
milliseconds, blink repeatedly with 50 milliseconds on followed by 50
milliseconds off for one second, and then display its normal state.
Delay Interval
A vehicle has been detected but the output is not activated due to the
programmed delay feature being active. The LED will turn on for 200
milliseconds and then off for two hundred milliseconds. If the vehicle
leaves the detection area before the programmed delay interval expires,
the LED will return to the off state. If the vehicle is still present after the
programmed delay time has expired, the LED will become solid and the
output will be activated.