40
…3
SETUP
Example 2
– End of daylight saving period:
Archiving is started at 00:15:00 on 26
th
October 2003 –
filename: 00150026Oct03Ch1_1AnlgSM2000~DS.B00.
Summertime ends at 3:00am on 26
th
October 2003.
The clock changes automatically to 2:00am.
The existing file is closed and a new file is created –
filename: 02000026Oct03Ch1_1AnlgSM2000.B00.
The file '00150026Oct03Ch1_1AnlgSM2000~DS.D00'
contains data generated from 00:15:00 to 02:59:59 (before
summertime ends).
The file '02000026Oct03Ch1_1AnlgSM2000' contains
data generated from 02:00:00 (after summertime ends).
3.7.3
Binary Format Log files
A new binary log file is created under the following conditions:
•
When an existing valid binary log file does not exist on the
media card.
•
When the maximum size (64000 entries) is exceeded.
•
When the daylight saving period starts or ends.
Files containing log data generated during the daylight saving
period (summertime) have “~DS” appended to the filename.
3.7.4
Binary Format
Data File Examples – Figs. 3.9 to 3.12
Binary format archived data is stored in a secure binary encoded
format. A separate file is created for each recording channel. The
log data is stored in an encrypted text format. The files can be
read on a PC using the Company's DataManager data analysis
software package.
Note.
Binary format archive files created during the
daylight saving period (summertime) are compatible
with the database feature of Version 5.8 (or later) only of
the Company's DataManager data analysis software
package.
3.7.5
Binary Format Data Verification and Integrity
When data is saved to the archive media it is checked
automatically to verify that the data stored on the media matches
exactly what is stored in the internal memory.
Each block of data in the channel data files has its own data
integrity check. This enables the integrity of the data stored on
the external media card to be verified when it is viewed using the
Company's DataManager software package.
The log files also contain built-in integrity checks enabling the
integrity of the data to be verified by the DataManager software.
3.7.2
Binary Format Channel Data Files
A new binary format channel data file is created under the
following conditions:
•
When the current file for a channel does not exist on the
media card.
•
When the maximum size (5Mb) of the existing data file is
exceeded.
•
When the recording channel's configuration is changed.
•
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.
Files containing channel data generated during the daylight
saving period (summertime) have '~DS' appended to the
filename.
Example 1
– Start of daylight saving period:
Archiving is started at 01:45:00 on 30
th
March 2003 –
filename: 01450030Mar03Ch1_1AnlgSM2000.B00.
Summertime starts at 2:00am on 30
th
March 2003.
The clock changes automatically to 3:00am.
The existing file is closed and a new file is created –
filename: 03000030Mar03Ch1_1AnlgSM2000~DS.B00.
The file '01450330Mar03Ch1_1AnlgSM2000.B00'
contains data generated from 01:45:00 to 01:59:59 (before
summertime starts).
The file '03000030Mar03Ch1_1AnlgSM2000~DS.B00'
contains data generated from 03:00:00 (after summertime
starts).
3.7
Binary Format Archive Files
3.7.1
Binary Format Archive Filenames
Examples of binary archive filenames are shown in Table 3.5.
Table 3.5 Binary Archive Filenames
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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 ...