Honeywell
14
If the distance is too long, you should use twisted pair cable, and you can add
video compensation devices or use optical fiber to ensure video quality.
You should keep the video signal away from the strong electromagnetic
interference, especially the high tension current.
Keep connection lugs in well contact
The signal line and shielded wire should be fixed firmly and in well connection.
Avoid dry joint, lap welding and oxidation.
Connecting Video Output
Video output includes
BNC (CVBS PAL/NTSC, 1.0VP-P, 75
Ω
), VGA and HDMI.
The system supports the three kinds of outputs at the same time.
When you are using PC monitor to replace standard CCTV monitor, please pay
attention to the following points:
•
To extend the product’s life, do not run the pc monitor for a long time.
•
Regular demagnetization will keep device maintaining proper status.
•
Keep it away from strong electromagnetic interference devices.
Using TV as video output device is not a reliable substitution method. You also
need to reduce the working hour and control the interference from power supply
and other devices. The low quality TV may result in device damage.
Connecting Audio Input & Output
Audio Input
Use the BNC connector to connect the audio channel.
Due to high impedance of audio input, please use active sound pick-up.
Audio transmission is similar to video transmission. Try to avoid interference, dry
joint, loose contact and it shall be away from high tension current
Audio Output
The audio output signal parameter is usually over 200mv 1K
Ω
(BNC). It can directly
connect to low impedance earphone, active sound box or amplifier-drive audio
output device.
If the sound box and the pick-up cannot be separated spatially, it is easy to arouse
squeaking. In this case you can adopt the following measures:
•
Use better sound pick-up with better directing property.
•
Reduce the volume of the sound box.
•
Using more sound-absorbing materials in decoration can reduce voice echo
and improve acoustics environment.
•
Adjust the layout to reduce happening of the squeaking.
