|A. Camera Power |
- Use only regulated power supplies, the tolerance should be within 5% of the required voltage.
- Ensure at least 40% spare capacity per power supply to prevent overheating and voltage loss.
- Use power cable of a suitable thickness
- Beware of voltage drops over long distance runs
- Beware of polarity when connecting the power supply to a camera
- Ensure proper cooling or ventilation for power supplies
- Avoid operation of CCTV equipment on the same power circuit as elevators, compressors, generators or any large motors.
|B. Cabling |
- Avoid running video cable parallel to AC power cables, especially those carrying high current.
- RG59U Co-Ax runs should not exceed 200m for colour and 300m for B/W
- Avoid sharp bends when cabling
- Avoid cable joins and using BNC barrels
- Avoid over-tightening cable-ties
- Ensure use of proper co-ax wire-stripping and crimping tools
- Ensure BNC Connectors are properly crimped
- Use Rubber BNC Boots after crimping to protect crimped area and bend radius
- Mark or label camera and data signal cables
- Outdoor cable runs should be housed in UV-proof conduit
- In lightning prone areas, install surge protection devices
|C. Camera Installation |
- Test all equipment before installation. Therefore equipment can be replaced before arrival on-site if needed.
- Ensure the mounting brackets of outdoor speed domes are properly sealed to prevent condensation in the camera housing.
- Use EIA rated RS232/422/485 or CAT-5 cabling for speed dome or PTZ communication.
- Ensure sufficent space for camera, lens and connectors when choosing a camera housing.
- Avoid direct sunlight on equipment as it raises the temperature of the equipment.
- Position cameras out of reach of vandals or 'curious' people.
- Mount good quality mounting brackets in a stable location to avoid unstable or vibrating images caused by vibration or wind.
- CS Mount cameras placed inside, at industrial or dusty/damp installations should be placed into outdoor camera housings.
- Avoid installing cameras too high above the subject thus preventing 'top-of-head' video images
- Ensure camera mounting poles are mechanically secure to avoid vibration on camera images
- Before connecting power, ensure the supply is 12VDC regulated.
|D. Time Lapse VCR Considerations |
- Time Lapse VCR Considerations
- Regular servicing of your VCR , will ensure continued operation and quality of recordings.
- Use only high quality 'branded' tapes
- Replace tapes after being used 12 times.
- Ensure Time Lapse VCR is suitably hidden in event of a robbery
- Before reviewing a video tape for evidence, make a copy and review the copy. This ensures the the quality of the original is preserved, especially when starting, stopping and pausing the tape.