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9. FAQ
Q: I have pressed the off-switch but the 73fifty appears to be still recording
A: This is a safety feature to prevent accidental loss of data. Please press "Stop" before switching
off the unit. If you are using a 73fiftyBlackbox then note that the front panel keys are disabled
when recording is triggered externally. Recording will only stop when the trigger is removed.
Q: During recording, the record button suddenly flashes and the message "creating file" is displayed
on the small LCD screen
A: This is a feature of recording in time-restricted mode. The message means that more than 5
minutes of data has been recorded and a 5-minute segment is being created. Please be reassured
that recording is still in progress. After a few seconds this message will disappear and the screen
will say "Record" again.
Q: The LCD screen shows the message "Releasing space"
A: This is a feature of the loop-recording of the 73fiftyBlackbox. Once the disk space has been
used up, the unit will start progressively removing the oldest files to make room for the new one.
You will see this message every 300 seconds. Recording is not interrupted whilst this message is
displayed, and it is not possible to stop recording until this task has been completed.
Q: The LCD screen shows a series of blocks, some of which are filled, some chequered
A: This message is a warning that disk space is becoming full. The more chequered boxes that are
displayed, the less space there is less on the disk. When you see this message it will be necessary
to upload some files (for example to a Windows PC). If this is not done, eventually the disk will
become full and recording will no longer be possible until some files are uploaded.
NETmc Marine 73fifty Manual Rev 5.8 July 2011
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