SmarTek Systems SAS-1 as a Count Station And Converting - Manual (Page 4)

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Collecting the Traffic Data
The SAS-1 will collect traffic flow data for all 5 lanes and update the archive as specified by
the Update Period parameter in the Archive Header File (5, 10, 15, 20, 30, or 60 min).
After sending a header file to the SAS-1 or setting the date and time in the SAS-1, data
archiving begins after the next full data write period. For example, let the archive period be
set at 15 minutes and the Set Date and Time command be sent to the SAS-1 at 1:01:55 PM.
The first archive record would be captured at 1:30:00 PM (data from 1:15 to 1:30) and the
SAS-1 would write the archive records at 2:15:00 PM. The SAS-1 captures 4 intervals of
data before writing the data to non-volatile flash memory. The time stamp for each written
record corresponds to the end of the data interval.
Retrieving the Archive Data from the SAS-1
1) To retrieve the archive data from the SAS-1, click the Sensor/Get SAS Archive Data menu
item. The progress of the retrieval process is shown in the status line at the lower right area
of SAS Monitor's main display. If the process is not successful, the Start/Stop button on the SAS
Monitor main display will show Stop. Click the Stop button and retry the Get Archive process.
The downloaded archive data is stored in the SAS_Monitor \Arch_Data\ sub-folder with a
date and time stamp prefix on the filename specified in the Archive Header File (.hhx).
20011116_094313_I95Rt123.ahx
File Name Specified in Archive Header
yyyy
mm
dd hh
mm
ss
Retrieval Process Status
S
S
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