Dahua DH-HCVR5424L-S2, Руководство пользователя

Страница: 243 / 340

HDCVI Standalone DVR User’s Manual
233
Audio source Please select from the dropdown list. There are two options:
Normal/HDCVI. In the normal mode, the audio signal comes
from the Audio In. In the HDCVI mode, the audio signal comes
from the coaxial cable of the camera.
Audio sampling
rate:
The audio sampling rate refers to the device audio sampling
rate per second. The options include: 8/16/32K. The higher
the rate is, the more natural and impressive the audio is. The
default setup is 8K.
Watermark
enable This function allows you to verify the video is tampered or not.
Here you can select watermark bit stream, watermark mode and
watermark character. Default character is DigitalCCTV. The max
length is 85-digit. The character can only include number,
character and underline.
5.8.1.3.2 Snapshot
The snapshot interface is shown as in Figure 5-23.
Figure 5-23
Please refer to the following sheet for detailed information.
Parameter Function
Snapshot type
There are two modes: Regular (schedule) and Trigger.

Regular snapshot is valid during the specified period you
set.

Trigger snapshot only is valid when motion detect alarm,
tampering
alarm or local activation alarm occurs.
Image size It is the same with the resolution of the main stream.
Quality
It is to set the image quality. There are six levels.
Interval
It is to set snapshot frequency. The value ranges from 1s to 7s.
Or you can set customized value. The max setup is
3600s/picture.
Copy
Click it; you can copy current channel setup to other channel(s).
5.8.1.3.3 Video Overlay
The video overlay interface is shown as in Figure 5-24.