DSP-50 User Manual
Page 19 of 27
DSP50_MAN_A
Pulse Timing
Output B is configured for a pulse mode of operation (Pulse on Entry,
Pulse on Exit, or Magnetometer modes) and is generating a 250
millisecond activation pulse on Output B. The Detect B LED will be on
during the 250 millisecond activation period.
Pulse Occupancy
Output B is configured for a pulse mode of operation while operating in
the loop mode (Pulse on Entry or Pulse on Exit) and a vehicle is being
detected but Output B is not activated. There are several circumstances
under which this can occur. In the Pulse on Entry mode this occurs
when delay is enabled and currently timing, or the entry pulse has been
generated and the vehicle is still over the sensor. In the Pulse on Exit
mode this occurs when delay is enabled and currently timing, or the
detected vehicle is still over the sensor and the detector is waiting for it
to depart before generating the exit pulse. The Detect B LED will display
a flicker during this time. The flicker display is a very fast flashing at a
lower level of brightness.
Output B Active
A vehicle is detected and Output B is activated or the detector has
identified a fault and has activated Output B because it is in the fail
output mode of operation.
Figure 7: Detect B LED States