SmarTek Systems SVS-1 User Guide-Part E - Manual (Page 7)

Set Line Zone Parameters
Set Line Zone Parameters:
1) For most installations using the Default parameters
results in excellent performance. To set all line zone
parameters to default values, click the Def Parms All
LZs button. Note that lines zones that have been
assigned to a Left Turn phase ( 1L, 3L, 5L, etc.) may
have some parameters with different default values
compared to parameters for line zones assigned to Thru
or Right Turn phases ( 6T, 6R, 8T, 8R, etc.).
2) To set specific parameters for selected line zones to
different values first click the LZ= button to select a
line zone. The selected line zone turns green. All
others are magenta.
3) Click the Parameter Name button to select a specific
parameter to change the value. The parameter value
shows up in the next button to the right.
4) Next click the Parameter Value button to change the
value of the parameter. If it is desired to set the selected
parameter value for all line zones, click the All button
next to the parameter value.
Steps 2 thru 4 may be repeated as many times as
necessary until the parameter values are satisfactory.
After completing the parameter setup, click the
Main button to return to the Main Setup display.
No Motion Timeout (default=2 min) – This should be set as close to the
light cycle time as possible Rural intersections might be 1 min while urban
intersections might be as long as 3 or 4 minutes.
Detection Threshold (default=8) – Increasing this threshold decreases
detection sensitivity, while decreasing this threshold increases sensitivity.
Values range from 5 to 12.
BG Select En Har Thr (default=20 for LZ in left turn lane, 10 for other
LZs) – This parameter should not be changed except under guidance from
SmarTek Systems.
BG Match Threshold (default=5.0) - This parameter should not be
changed except under guidance from SmarTek Systems.
No Motion Threshold (default=3.0) - This parameter should not be
changed except under guidance from SmarTek Systems.
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For cameras with high contrast settings, it may be necessary to set the shadow rejection to Low,
Medium, or High depending on contrast settings. The Shadow Rejection setting is for all line zones
and the default setting is None. To change shadow rejection, click the Shadow Rej button until it reads
the setting desired. Note that shadow rejection processing is enabled even if the rejection setting is set
to None.