
CHAPTER 7 DATA COLLECTION 77
Download Interval Data
Under the Download Interval Data section, click the Browse button. is will open a di-
rectory box where you can either create a new data download le log or locate an existing
download le log. Once you’ve selected an existing le or entered the name of the new le,
select Open.
Next, select the type of download to perform. e following types of download sessions are
available:
Normal – Retrieves all interval data from the beginning of the study to the most recent
record. e number of lanes per record is determined by the number of lanes currently
congured on the sensor.
Incremental – Retrieves only the interval data that was recorded after the indicated
date and time. e number of lanes per record is determined by the number of lanes
currently congured on the sensor.
Error Recovery – Retrieves the entire contents of the ash memory buer. e ash
memory buer contains 2976 records and each record has data for eight lanes. e
contents of SRAM are not retrieved in this mode. You can perform this type of down-
load to verify the contents of the ash memory buer in the event that a normal or
incremental download does not retrieve all the data that you expect to receive.
Once you have selected the type of download, click Download.
Note
Each time a data download is performed, a header is inserted into the log file that
indicates the date of the download.
Data in the SRAM buer contains the most recent information and will be downloaded
rst. If there is any data in the ash buer, it will be downloaded second. However, before
the data is written to the log le it will be reordered, so that the oldest data intervals will
be near the top of the le.
If you want to cancel the download or if you only want to download a certain number of
intervals, click the Stop button as soon as the desired number of interval data records are
downloaded. Once the download process has stopped, a window is displayed that indicates
number of interval data records that were downloaded.
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