TruVision NVR 22 Series, Руководство пользователя

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Chapter 12: Recording
TruVision NVR 22 (SP) User Manual 101
5. Click Exit to return to live view or continue configuring the recorder settings.
SD card recording
Recording is normally done on the local HDD of the recorder. However, when there is a
communication problem between the camera and the recorder (for example, the link
fails), the images from the camera cannot be stored on the recorder HDD. Instead they
can be recorded on the internal SD memory card in the camera. The camera must still
be operational and connected to the network.
Note : This SD recording option is only available when the camera is equipped with an
SD card.
The recording on the SD card starts with the pre-event image memory buffer 15
seconds in advance (default pre-event time is 15 s) and it continues until the connection
is re-established. The recording also includes the post-event time image memory buffer
(default post-event time is 10 s). Post-event is the time of the image memory buffer
length after re-establishing the connection between the camera and the recorder.
When the connection between recorder and camera is re-established, the recorded
images on the SD memory card are automatically copied to the recorder and stored on
the HDD. The recorded images are inserted where the recorder stopped recording.
Consequently, in playback mode, there are no missing or lost images.
When you play back the recordings directly from the SD card, they are marked as
“Schedule” in the camera recording. See Figure 26 below.
Figure 26: SD card image recording in playback
Prior to setting up the SD recording function, the SD card must be installed and
initialized (formatted) in the camera. No further setup is required in the camera as the
recorder takes control of the camera.