Clare Controls 16-Channel NVR with PoE, User Manual

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Chapter 14: Other Settings
156 Network Video Recorder User Manual
Bit rate is determined by the selected resolution (1280 × 720, 1920 × 1080,
2560 × 1920, etc.), frame rate (frames per second), and video quality (the
amount of compression being applied to each camera).
Example
32 channels of 720P cameras at 15 fps with good image quality will have
32 x (1536 + 512) = 65536 Kbps (about 66Mbps), so the 32-channel NVR can
support them.
Each channel can support a different camera, as long as they do not exceed the
total bit rate limit. It is entirely possible to mix 5 MP cameras with 4CIF IP
cameras, etc. Generally, 5 MP at 30 fps requires around 20 Mbps for best
quality. A 4-channel NVR is currently limited to 16 Mbps.
Adjusting settings
Know NVR’s capacity and make adjustments, if necessary. Adjust the bit rate by
lowering the resolution, frame rate, or video quality setting.
To adjust the setting:
1. Enter the Live View settings interface.
2. Adjust the Resolution, Frame Rate, and Video Quality settings.
Configuring RS-232 serial ports
The RS-232 port is used in two ways:
Parameters Configuration: Connect a PC to the NVR through the PC serial port.
Configure device parameters using software such as HyperTerminal. Set the
serial port parameters to match the NVR’s when connecting with the PC serial
port.
Transparent Channel: Connect a serial device directly to the NVR. The PC will
control the serial device remotely through the network and the protocol of that
serial device.