PAL Security Camera
At 360 Secure Solutions, we cater to all your security needs, with the latest and most advanced PAL security camera and systems. PAL (Phase Alternating Line) is one of the three current simulation technology color TV formats, alongside NTSC and SECAM, which deal with video and audio signals. It is a format common in Singapore and across Oceania, Europe and South America.
Video recording devices and analogue monitors need to be compatible with the correct video format (NTSC/PAL) to work, and therefore it is important for them to be connected with the correct formatted camera. Today a lot of televisions are multifunctional (compatible with both forms) but it is still important to bear this fact in mind.
The History of PAL
PAL was developed in the 1960s when the world began to change from black and white television to color. To ensure that a complete overhaul of major hardware wasn’t required, technicians in charge of broadcasting developed systems that allowed the signals that dictated which colors were shown to be transmitted in the gaps between signals being sent to black and white televisions.
This resulted in the three TV formats PAL, NTSC and SECAM being created to best fit the logistical and infrastructural concerns of the time.
The Difference between PAL and NTSC
PAL and NTSC formats are analogue video standards. They are important to network video because video encoders provide such resolutions when they digitize signals from analogue cameras.
It is often difficult to notice the difference between PAL and NTSC, but when looking at the technical differences, it becomes more evident:
- PAL cameras produce 25 frames per second, whilst NTSC cameras produce 30 frames per second.
- PAL signal is sent out at 50 fields per second, NTSC’s at 60 fields per second.
- PAL has better picture resolution than NTSC.
What are the reasons for these differences? It is all down to the different electrical power systems used in each country. The US power stations generate 60Hz, therefore the television signal is sent out at 60 fields per second and resulting in 30 frames per second.
The likes of Europe use 50 Hz power supply, therefore the PAL signal is sent out at 50 fields per second, 25 alternating lines.
Why Choosing the Right Format is Important
Consider this; a UK plug cannot match the specifications of a US socket, and this is exactly the same as with the NTSC/PAL formats. Therefore the video format must be the same between any two paired devices to ensure they work correctly. In relation to security cameras, if the other components of your surveillance system (e.g. TV, recording medium) uses PAL and are not multiformat compatible, then you’ll need to choose a PAL security camera. Fortunately, we at 360 Secure Solutions will always survey your site carefully and provide the right system to suit your needs.