User Manual
BOP HD8 / BOP HD16
Ref.: IR1212828 A 21.08.2009
Edition 1.0
Page 48/87
I + M E A C T I A G m b H
6.4.3.4
S
HUTDOWN DELAY
The video protection system BOP HD does not shut off directly with the drop out of the
ignition. Not until after the shutdown delay the BOP HD is switched off. If the ignition is
engaged during the shutdown delay the BOP HD is not switched off and the shutdown
delay is reset.
6.4.3.5
P
RE
-
ALARM
/
P
OST
-
ALARM
If an alarm occurs all recorded data are additional stored in a separate folder
(/hdd/alarm/) for a specific time.
Pre-alarm – recording time before the alarm signal
Post-alarm – recording time after the alarm signal
Total time length of the recording at an alarm = Pre-alarm + Post-alarm
Only the data which are recorded in the case of an alarm will be stored inside the
write protected alarm buffer. For this the values for pre-alarm and post-alarm
should be set to a reasonable size.
Therefore set the periods
As big that all important information are captured
As small that the alarm buffer gets no needless size
6.4.3.6
A
LARM BUFFER LIMIT
The alarm buffer limit specifies the size of the alarm buffer from the total size of the data
storage (value in percent). If the limit is reached a message is written into the error file
err.txt and therefore a maintenance advice is activated. However the alarm data are
stored if the limit is reached. By this the ring buffer is reduced.
Alarm buffer
(~10%)
Ring buffer for normal data storage
(~90%)
Total buffer
Alarm buffer limit
