SYSTEM PARAMETERS (FOR STANDARDS B/G)
| Parameters | Channel – 1 | Channel – 2 |
|---|---|---|
| IRF sound carriers | ||
| IF Frequencies | fvision + 5.5 | fvision + 5.7421875 |
| MHz (+/–500 Hz), eqvt. to 353 fh | MHz (+/–500 Hz). | |
| Vision/sound power ratio | 13 dB | 20 dB |
| Modulation | FM | FM |
| Frequency deviation max. | M +/–50 kHz | < + /–50 kHz |
| nominal value | +/–30 kHz | +/–30 kHz |
| Pre-emphasis | 50 μs | 50 μs |
| AF bandwith | 40 to 15000 Hz | 40 to 15000 Hz |
| Sound Modulation | ||
| Mono | mono | mono |
| Stereo | (L + R)/2 = M | R |
| Dual sound mono | Channel A | Channel B |
| Identification | ||
| Pilot carrier frequency | — | 54.6875 kHz (+/–5Hz) Eqvt. to 3.5 fh) |
| Modulation | — | AM (with identification frequency) |
| Modulation depth | — | 50% |
| Identification signal | ||
| Mono | — | none |
| Stereo | (fh/133 =) ... |
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