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The first letter indicates whether you are recording in continuous (c ) or time-restricted (t ) mode.
The second letter indicates whether you are recording at high (h), medium (m) or low (l) bitrate. In
the above example the 73fifty is recording in time-restricted mode, at high bitrate.
The digits to the right of these symbols show the file name. This name is made up of the date and
time when recording was started (in time-restricted mode the name will be the time at the start of
th
each 5-minute block.) In the above example, the current date is the 16
April 2007 and this current
block of recording was started at 11:55 and 28 seconds.
The second line of the display shows the time in seconds since recording was started (or in time-
restricted mode the time since the start of the latest 5 minute segment.) In the above example 12.5
seconds have lapsed since the start of the latest recording segment.
Recording can be paused by pressing:
and resumed by pressing
ensuring that the same file name is kept.
To stop recording press:
After stop has been pressed, the file name of the most recently recorded file (or segment) is
displayed for a few seconds.
To monitor the quality of the recording:
Standard (blue)" unit and 73fifty Blackbox
When the unit is recording, the image shown on the monitor connected to the input sockets is a
pass-through signal (i.e. is identical to the input signal.)
Quality control is enabled through the use of a monitor connected to the QC socket at the back of
the 73fifty. This shows a decoded view of the encoded mpeg file and will lay behind the live video
by approximately 2 seconds. A "QC" logo is displayed in the top corner of the QC screen.
An example is shown here:
During recording the screen a red dot is displayed:
If recording is paused, the red dot becomes blue.
NETmc Marine 73fifty Manual Rev 5.8 July 2011
17 of 38
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