video carrier การใช้

Video carriers, as heard on a communications receiver, no longer can be heard as a pure tone.
In the PAL system, the color subcarrier is 4.43 MHz above the video carrier, while in the NTSC system it is 3.58 MHz above the video carrier.
In the PAL system, the color subcarrier is 4.43 MHz above the video carrier, while in the NTSC system it is 3.58 MHz above the video carrier.
For example, PAL-M ( Brazil ) uses a 3.58 MHz subcarrier, and SECAM uses two different frequencies, 4.250 MHz and 4.40625 MHz above the video carrier.
Other subcarriers piggybacked on the video carrier are also included in transmissions, often at 6.2 MHz and 6.8 MHz, just above the bandpass of the video signal ( even if receiver.