Qvis PIONEER 3, Руководство пользователя

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o
Camera and NVR power supply should be connected to a common and
reliable ground source, in order to ensure the normal operation of the
camera.

Ensure stable and reliable transmission line:
o
Use high-quality, shielded coaxial for good video transmission. Also,
based on the transmission distance, choose the right model. If the
distance is too far, depending on the circumstances, the use of twisted
pair, adding video compensation equipment, fiber optic transmission, are
ways to ensure signal quality.
o
The video signal line should avoid strong electromagnetic interference.
1.11.2 Audio Input
Please ensure that before you install and connect an audio source to the Quadbrid NVR
you follow these important stipulations:

Audio Input only uses a BNC connector (only one is needed to support intercom
function)

Audio input impedance is high, and therefore must use active pickups.

Audio input is similar to the video input audio transmission and requires the line
to avoid interference.
1.11.3 Audio Output
Audio output signal parameters is generally gr
eater than 200mv 1KΩ (BNC). You
can directly connect low impedance headphones, powered speakers, or any other
sound output device with built in power amplifier.