Advanced Videographic Recorder
SM2000
3 SETUP
IM/SM2000
Issue 11
41
3.7 Binary Format Archive Files
3.7.1 Binary Format Archive Filenames
Examples of binary archive filenames are shown in Table 3.5.
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.
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 30th March 2003 –
filename: 01450030Mar03Ch1_1AnlgSM2000.B00.
Summertime starts at 2:00am on 30th 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).
Example 2
– End of daylight saving period:
Archiving is started at 00:15:00 on 26th October 2003 –
filename: 00150026Oct03Ch1_1AnlgSM2000~DS.B00.
Summertime ends at 3:00am on 26th 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.
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.
Type
Format
Channel
data files
<Start Time HHMMSS><Start Date
DDMMMYY>Ch<Group>_<Channel><Instrument tag>
e.g. 14322719Dec03Ch1_2Boiler room3
Alarm
event log
files
<Start Time HH_MM><Start Date DDMMMYY><Process
Group Tag> e.g. 14_3219Dec03Boiler5
Totalizer
log files
<Start Time HH_MM><Start Date DDMMMYY><Process
Group Tag> e.g. 14_3219Dec03Boiler5
Audit log
files
<Start Time HH_MM><Start Date
DDMMMYY><Instrument Tag> e.g. 14_3219Dec03Boiler
room 3
Table 3.5 Binary Archive Filenames
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, page 54.
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.
