Advanced Videographic Recorder
SM2000
3 SETUP
44
IM/SM2000
Issue 11
3.8 Archiving Online/Offline
Before data can be archived to external media, the external
media must be placed on-line and one or more archive file
enables set.
When an external archive media card is inserted and there
is <1 day (Binary format) or <1 hour (Text format) of data in
internal memory, a dialog box is displayed giving the user
the choice of putting the media on-line or remaining off-
line. If no selection is made within 10 seconds, the media
card is placed on-line automatically:
When an external archive media card is inserted and there
is >1 day (Binary format) or >1 hour (Text format) of data in
internal memory, a dialog box is displayed prompting the
user to select either the data to be archived or remain off-
line:
If a large amount of Text format unarchived data is
selected, a progress bar appears. During this time
operator views cannot be accessed, but new data
continues to be recorded to the internal buffer memory.
External archive media can be set on-line (if a media card
is inserted) or off-line in the setup menu.
Set archiving off-line before removing external media to
prevent loss of data and possible damage to the media
card.
When external archive media contains approximately 250
files, its read/write performance begins to degrade and
either of the 'Warning – Too Many Files' icons (
or
)
are displayed. Change the media as soon as possible.
When external archive media contains approximately 300
files, its read/write performance becomes too slow,
Archiving is stopped automatically and the 'Too Many Files
– Archiving Stopped' icons (
alternating with
) are
displayed. Change the media immediately to prevent loss
of data.
3.9 Backing-up Archived Data
It is advisable to back-up critical data stored on SmartMedia or
Compact Flash cards on a regular basis. The instrument's
internal memory provides a buffer for the most recent data so, if
data stored on archive media is lost, it can be re-archived – see
'Reset archiving' on page 32.
To ensure that all required data is available for re-archiving, it is
recommended that data archived on archive media is removed
and backed-up before the instrument's internal buffer overwrites
that data. The length of time for which data remains in the
instrument's internal memory depends on the sample rate and
the number of channels selected – see Table C.1 on page 120
for details.
3.10 Archive Wrap
Archiving can be configured to delete the oldest archived data
file automatically from the external media when the media
approaches its maximum capacity – see 'Wrap' on page 75.
Note.
Data stored in the internal memory buffer can still be
transferred to the archive media when the archive media is
placed on-line again (providing it is not off-line so long that
the un-archived data in the internal memory is overwritten).
