36
…3
SETUP
3.5.4
Archive File Types
Archive files are created in one of two user-selectable formats:
Text (comma separated values [.csv]) – see Section 3.6
or
Secure binary encoded – see Section 3.7
All archive files created by the instrument are given filenames
automatically but each type of archived file is given a different file
extension depending on whether Text or Binary format has been
selected during archive configuration – see Section 4.5.6. File
types and extensions for Text files are shown in Table 3.1. File
types and extensions for Binary files are shown in Table 3.2.
3.6
Text Format Archive Files
3.6.1
Text Format Channel Data Files
Text format channel data files can be configured to contain data
gathered over a predefined period of time using the 'New File
Interval' setting – see Table 3.3.
Note.
The 'New File Interval' is set in the Configuration
level – see Section 4.5.6.
In addition to new channel data files being created according to
the New File Interval selection, they are also created in the
following circumstances if automatic update is enabled and the
media is on-line or if a manually triggered update is in progress:
• The instrument's power is lost then restored.
• The instrument is taken offline and the archive media
removed, replaced or refitted.
• The instrument's configuration is changed.
• One of the current files exceeds the maximum
permissible size.
• When the daylight saving period starts or ends.
Note.
The instrument's internal clock can be
configured to adjust automatically at the start and
end of Daylight Saving Time (Summertime) periods –
see Section 4.4.3.
When one of these conditions occurs, new channel data files are
created for each enabled group and the file extension index on
each new file is incremented by one from the previous file.
Example
– if the original file had an extension of .D00, after
one of the above events a new file will be created with the
same filename but an extension of .D01.
Table 3.1 Text Format File Types and Extensions
Table 3.2 Binary Encoded Format File Types
and Extensions
Table 3.3 New Text File Intervals
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Содержание InformIT SM2000
Страница 1: ...InformIT Advanced Videographic Recorder SM2000 User Guide IM SM2000_7 ...
Страница 43: ...41 3 SETUP Fig 3 9 Channel Data File Sample Binary Format Fig 3 10 Alarm Event Log Sample Binary Format ...
Страница 44: ...42 Fig 3 11 Totalizer Log Sample Binary Format Fig 3 12 Audit Log Sample Binary Format 3 SETUP ...