Detection Type; Threshold Minimum And Maximum - 3M XT-1 Operating Instructions Manual

Appendix: Timer Module
Each day part and shift must have a start and end time. You can set the definitions to any time periods
that you want to track. Time definitions must always have an earlier start time than end time.
1. DAY PART Time Definitions
2. SHIFT Time Definitions
Note:
Time definitions must always have an earlier Start Time than End Time. If the End Time is a value smaller
than Start Time, it is assumed to occur the next day. Ex. Start = 6:00, End = 2:00 means Start 6:00 am,
End time 2:00 in the morning the following day.

Detection Type

Because each vehicle detector can be a presence type or pulse type detector,
you must ensure that the timer is configured for the correct type.
Note:
The default detector type is presence. If you do not have any pulse type detectors you should not need to
change these settings.
Perform the following procedure to change the detector type:
3. Enter the timer configuration menu, see above.
4. Select 6 Configure Timer > 1 Detection Type.
5. Change the value of the desired detector to Presence or Pulse.

Threshold Minimum and Maximum

You can set the timer to ignore abnormally long or short events that would skew average data.
Perform the following procedure to change the minimum or maximum thresholds:
1. Enter the timer configuration menu, see above.
2. Select 6 Configure Timer > 2 Threshold MIN or 3 Threshold MAX.
3. Change the value of the desired detector to a new value:
November 2011 - Revision 1.8
Page 60 of 65
• 8 day parts
• Start (mm:ss)
• End (mm:ss)
• 4 shifts
• Start (mm:ss)
• End (mm:ss)
• The range for minimum threshold is 0 to 9 seconds. Any event that is
shorter than the threshold is ignored by the timer in averaging.
• The range for maximum threshold is 2 to 9 minutes. Any event that is
longer than the threshold is ignored by the timer in averaging.
3M™ Wireless Communication System Model XT-1
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