FM1236 Ver la hoja de datos (PDF) - Philips Electronics

Número de pieza

componentes Descripción

Fabricante

FM1236

Desktop video & FM radio module system M, N

Philips Electronics 

Philips Components

Desktop video & FM radio module

system M, N

Preliminary specification

FM1236

Definitions of test signals (see Fig.2)

TEST SIGNAL

A0: unmodulated vision

carrier

A1: RF M, N standard signal

with video modulation

B1: unmodulated sound

carrier M, N system

B2: FM modulated sound

carrier M, N system

B3: unmodulated sound

carrier M, N system

C1: FM modulated sound

carrier

C2: FM modulated sound

carrier

C3: FM modulated sound

carrier

FREQ.

(MHz)

AMPLITUDE

477.25 60 dBµV

477.25

481.25

481.25

60 dBµV

(top sync)

−7 dB w.r.t.

A0 to A1

−7 dB w.r.t.

A0 to A1

483.25

98.00

−12 dB w.r.t.

A0 to A1

60 dBµV

97.70 60 dBµV

or 98.30

98.00 60 dBµV

VIDEO

MODULATION

AUDIO

100% (rest carrier 12.5%)

2T pulse and bar

1 kHz; modulation frequency

deviation ±25 kHz;

75 µs pre-emphasis

1 kHz; modulation frequency

deviation ±22.5 kHz

1 kHz; modulation frequency

deviation ±22.5 kHz

1 kHz; modulation frequency

deviation ±75 kHz;

10% pilot carrier (L = R);

75 µs pre-emphasis

Aerial input characteristics

SYMBOL

PARAMETER

VSWR reflection coefficient

VPSM

Vant

surge protection voltage

antenna connection disturbance

voltage

CONDITIONS

MIN.

referred to 75 Ω impedance

(worst case on or between picture

and sound carrier at maximum gain):

all channels in TV mode

−

FM (centre of channel)

−

5

1 to <54 MHz

−

54 to <300 MHz

−

300 to <1000 MHz

−

MAX.

5

4

−

10

34

50

UNIT

kV

dBµV

dBµV

dBµV

1997 Feb 03

9

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