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1.9 VIDEO I/O REQUIREMENTS
Cameras and CCTV monitors attached to this DVR must use copper-based 75 Ohm video cable (e.g. RG-59, RG-
6, or RG-11) with BNC connectors (preferably male, or female via a female-female adapter).
Due to the possibility of impedance mismatch and undesired loss/reflections, 50 Ohm coax cable (e.g. RG-58)
and 75 ohm foil shield antenna cable and other types of coaxial cable are not compatible.
All connected video sources must provide a 1 Vpp NTSC or PAL video signal.
When converting other transmission types (twisted pair, fiber optics, radio) for the video inputs, be sure to verify
accurate receiver calibration and signal levels.
ATTENTION: In order for the system to auto-detect the appropriate video format (NTSC or PAL), make sure that
there is a video signal on Video Input 1 ("VIN 1") upon power-up.
1.10 AUDIO INSTALLATION
This DVR provides 2/4 line level audio inputs (4 in the case of the EMV400S) and 1 line level audio output.
PLEASE NOTE: The direct connection of a non-amplified microphone is not supported (a microphone amplifier is
required). The audio output requires an amplifier to drive a speaker or headphones.
The installation must be done with audio coaxial cable and RCA connectors.
AUDIO RECORDING FUNCTIONALITY:
Audio recording is activated / deactivated on a per-camera basis in the DVR's Camera Menu. Please check and
always comply with local laws and regulations when using audio recording.
The audio channel is recorded with the video channel and is independent of the image recording rate. Audio
recording is standard and do not require any further setup.
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