
CHAPTER 8 ZONES & CHANNELS 85
Normal Channel
e normal channel detects presence in the zone. is means that as soon as the leading
edge of the vehicle breaks the plane of the leading edge of the zone, the channel will be
activated (see Figure 8.7).
Channel LED
Channel LED
Channel LED
Figure 8.7 – Normal Channel
If there are no delay or extend settings, the zone will remain activated until all cars have
exited the zone.
Counting Channel
A counting channel counts each vehicle that passes through the zone. e channel is acti-
vated once the middle of the vehicle crosses the leading edge of the zone (see Figure 8.8).
Channel LED
Channel LED
Channel LED
Figure 8.8 – Counting Channel
Once you select a counting channel type, the delay and extend settings will be disabled.
Pulse Channel
A pulse activates the channel for a very short period of time once the front edge of the ve-
hicle crosses the leading edge of the zone (see Figure 8.9). You can congure how long you
would like the pulse to be by changing the pulse channel width setting (see Figure 8.13). A
new pulse will only be sent after a car enters a zone when the zone is empty.
Commentaires sur ces manuels