MSP3410B データシートの表示（PDF） - Micronas

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MSP3410B

Multistandard Sound Processor

Micronas 

PRELIMINARY DATA SHEET

MSP 3410 B

Table 3–3: Summary of NICAM 728 sound modulation parameters

Specification

Carrier frequency of digital sound

Transmission rate

Type of modulation

Spectrum shaping

Roll-off factor

Carrier frequency of analog sound

component

Power ratio between vision carrier

and analog sound carrier

Power ratio between analog and

modulated digital sound carrier

UK

Scandinavia/Spain France

6.552 MHz

5.85 MHz

5.85 MHz

728 kBit/s 1 part/million

Differentially encoded quadrature phase shift keying (DQPSK)

by means of Roll-off filters

1.0

0.4

0.4

6.0 MHz

FM mono

5.5 MHz

FM mono

6.5 MHz AM mono

terrestric cable

10 dB

13 dB

10 dB

16 dB

10 dB

7 dB

17 dB

11 dB

Table 3–4: Key parameters for German 2-carrier sound system

Sound Carriers

Channel FM1

Intercarrier frequencies

5.5 MHz

Vision/sound power difference

13 dB

Sound bandwidth

Pre-emphasis

Frequency deviation

Sound Signal Components

Mono transmission

mono

Stereo transmission

(L+R)/2

Dual sound transmission

language A

Identification of Transmission Mode on Channel 2

Pilot carrier frequency

Type of modulation

Modulation depth

Modulation frequency

Channel FM2

5.7421875 MHz

20 dB

40 Hz to 15 kHz

50 µs

±50 kHz

mono

R

language B

54.6875 kHz

AM

50%

mono: unmodulated

stereo: 117.5 Hz

dual: 274.1 Hz

ITT Semiconductors

7

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