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| TV System Channel Bandwidth Vision Carrier Primary Audio Carrier Secondary Audio Carrier Vision Modulation Lines per picture Line frequency (beam Left to Right) Field frequency (beam top to bottom) Colour Subcarrier frequency Aspect ratio Horizontal sync pulse amplitude Front porch Line blanking interval (beam R to L) Black & Blanking level White level Sound Modulation Sound deviation Audio pre-emphasis |
PAL (B) 7 MHz 1.25 MHz above lower edge of channel 5.5 MHz above vision carrier 242.1875 kHz above primary sound carrier Negative amplitude modulation (AM) 625 lines, Interlaced 2:1 15.625 kHz (64us) 50 Hz 4.43361875 MHz 4:3 100% carrier amplitude 1.3 - 1.8us 11.8 - 12.3us 76% peak carrier level 20% peak carrier level FM +/- 50KHz 50 us |
| DVB-T1 | Digital Video Broadcast - Terrestrial #1 |
| Modulation |
64-QAM (Quadrature Amplitude Modulation) |
| Code Rate |
2 / 3 |
| Carriers/Noise | 20 dB |
| Guard Interval |
1 / 8 |
| Carrier Mode |
8 K 6817 carriers (8K
mode) 2 K 1705 carriers (2K mode) |
| SD-DTV | Standard Definition DTV |
| 576 lines x 720 active pixels @ 50Hz interlaced (576i) | |
| MPEG-2 digital stereo sound | |
| Widescreen 16:9 aspect ratio | |
| HD-DTV | High Definition DTV |
| #1 - 1440 active pixels x
1080 lines @ 50Hz interlaced (1080i) #2 - 1280 active pixels x 720 lines @ 50Hz progressive (720p) #3 -_720 active pixels x 576 lines @ 50Hz progressive (576p) |
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| Widescreen 16:9 aspect ratio | |
| For more
information visit here (opens new window) encyclopedia.thefreedictionary.com lots of technical jargon explained... |
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