FM1236SLASHHM datasheet(9/20 Pages) PHILIPS

9 / 20 page

1997 Feb 03

Philips Components

Preliminary speciﬁcation

Desktop video & FM radio module

system M, N

FM1236

Deﬁnitions of test signals (see Fig.2)

Aerial input characteristics

TEST SIGNAL

FREQ.

(MHz)

AMPLITUDE

MODULATION

VIDEO

AUDIO

A0: unmodulated vision

carrier

477.25

60 dB

µV

A1: RF M, N standard signal

with video modulation

477.25

60 dB

µV

(top sync)

100% (rest carrier 12.5%)

2T pulse and bar

B1: unmodulated sound

carrier M, N system

481.25

−7 dB w.r.t.

A0 to A1

B2: FM modulated sound

carrier M, N system

481.25

−7 dB w.r.t.

A0 to A1

1 kHz; modulation frequency

deviation

±25 kHz;

µs pre-emphasis

B3: unmodulated sound

carrier M, N system

483.25

−12 dB w.r.t.

A0 to A1

C1: FM modulated sound

carrier

98.00

60 dB

µV

1 kHz; modulation frequency

deviation

±22.5 kHz

C2: FM modulated sound

carrier

97.70

or 98.30

60 dB

µV

1 kHz; modulation frequency

deviation

±22.5 kHz

C3: FM modulated sound

carrier

98.00

60 dB

µV

1 kHz; modulation frequency

deviation

±75 kHz;

10% pilot carrier (L = R);

µs pre-emphasis

SYMBOL

PARAMETER

CONDITIONS

MIN.

MAX.

UNIT

VSWR

reﬂection coefﬁcient

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)

−

VPSM

surge protection voltage

−

Vant

antenna connection disturbance

voltage

1 to <54 MHz

−

µV

54 to <300 MHz

−

µV

300 to <1000 MHz

−

µV

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