Analog PAL/NTSC
The benefit of an analog camera system is that it can be combined with technology such as the RadarEye active warning system. Orlaco has an extensive product portfolio that includes various other analog systems. Stoneridge-Orlaco has the right analog system for every market and every application. Offering a combination of real-time imaging and durable cameras, monitors and cables, analog systems are ideal for improving safety in the vicinity of any vehicle. But how does an analog system actually work? And what are the benefits?
Analog cameras have an image sensor with a resolution of 640 x 480 pixels. An analog camera transmits an electronic signal and the voltages associated with this signal supply the image. Differing video standards exist for analog systems: PAL and NTSC.
PAL vs. NTSC
PAL stands for Phase Alternating Line and is a standard for analog video. PAL delivers 625 scan lines per image, 25 frames per second and has a 50-Hz grid frequency. PAL is used primarily in Europe, Australia, part of South America and some areas of Africa.
NTSC stands for National Television Standards Committee. NTSC delivers 525 scan lines, 30 frames per second and has a 60-Hz grid frequency. NTSC is used primarily in North America, part of South America and in Japan.
Stoneridge-Orlaco supplies camera systems that support both the PAL and NTSC standards.
Analog Technology
Both PAL and NTSC cameras transmit an electronic signal and the voltages associated with this signal supply the image. The benefit of an analog system is that there is no delay before the image is displayed: The camera transmits the video signal to the monitor one to one via a coaxial cable. This is the main difference when compared with a digital camera. Digital GMSL and Ethernet systems do not use frequencies and wavelengths; instead, the video image is converted into a digital signal. This signal consists of 1s and 0s and must be encoded and then decoded in order to display the image on a monitor.
Interference and Noise
Video signals within analog systems are susceptible to interference, which can result in noise disturbance and snow or line effects in the image. The image can be disrupted if video signals are operating on the same frequency as cable signals, which is sometimes the case. The two signal types impede each other and as a result the original signals become distorted and blend together. Stoneridge-Orlaco cables and connectors are shielded against interference. The shielded cables meet high EMC requirements, are oil resistant and have molded waterproof connectors.
Serial and Non-Serial Solutions
Stoneridge-Orlaco supplies both serial and non-serial camera monitor systems. A serial system (seven-pin) enables serial communication between the camera and the monitor, allowing zoom commands to be transmitted, for instance. Stoneridge-Orlaco produces adapter cables to connect four-pin and/or seven-pin systems.
Extensive Range
Would you like to find out more about analog systems? If so, get in touch with Stoneridge-Orlaco.