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1.6 VIDEO INPUTS/OUTPUTS INSTALLATION
Cameras and CCTV monitors must use copper center conductor/copper braid 75 Ohm video cable (e.g.
RG-59, RG-6, RG-11) with BNC connectors.
To avoid impedance mismatch and undesired loss/reflections, 50 Ohm coax cable (e.g. RG-58), or 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 standard 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 upon power-up.
1.7 AUDIO INSTALLATION
This DVR provides 4 line level audio inputs and 1 line level audio output.
ATTENTION: 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 connected with audio coax cable and RCA plugs.
AUDIO RECORDING FUNCTIONALITY:
Audio recording is activated / deactivated in the Camera Menu for Camera #1~4 respectively. Please check
and always comply with local laws and regulations when using audio recording.
The audio channel is always recorded together with video and is independent of the image recording rate.
Though the audio record control is done in the Camera #1~4 screen, there is no specific camera allocation.
1.8 ALARM CONTACTS INSTALLATION
The alarm inputs can be used to start recording or for recording rate adjustment. In addition, alarm
reactions such as camera display on the monitor, buzzer, e-mail and network alarm are available. The
alarm output relay can be switched if required. Alarm input response actions can be controlled according to
a flexible schedule.
1.8.1 Alarm Input Contacts
This DVR provides one alarm input per camera. All inputs are programmable N.O. (Normal Open) or N.C.
(Normal Closed) Inputs have to be switched by dry contacts.