FM1246/HM/I PHILIPS [NXP Semiconductors], FM1246/HM/I Datasheet - Page 9

• Manufacturer Part Number: FM1246/HM/I
• Description: Desktop video & FM radio module system CCIR I
• Manufacturer: PHILIPS [NXP Semiconductors]

Philips Components
Definitions of test signals (see Fig.2)
Aerial input characteristics
1997 May 14
A0: unmodulated vision
carrier
A1: CCIR I standard signal
with video modulation
B1: unmodulated sound
carrier I system
B2: FM modulated sound
carrier I system
B3: unmodulated sound
carrier I system
C1: FM modulated sound
carrier
C2: FM modulated sound
carrier
C3: FM modulated sound
carrier
C4: FM modulated sound
carrier
C5: unmodulated sound
carrier
VSWR
V
V
SYMBOL
PSM
ant
Desktop video & FM radio module
system CCIR I
TEST SIGNAL
reflection coefficient
surge protection voltage
antenna connection disturbance
voltage
PARAMETER
480.25
480.25
486.25
486.25
478.25
108.0
FREQ.
(MHz)
87.5
98.0
98.0
98.0
60 dB V
60 dB V
(top sync)
60 dB V
60 dB V
60 dB V
60 dB V
60 to 100 dB V
AMPLITUDE
7 dB w.r.t. A1
7 dB w.r.t. A1
15 dB w.r.t. A1
referred to 75
(worst case on or between picture
and sound carrier at maximum gain):
<1.75 GHz
all channels in TV mode
FM (centre of channel)
9
100% (rest carrier 10%)
2T pulse and bar
CONDITIONS
impedance
VIDEO
MODULATION
1 kHz; modulation frequency
deviation 27 kHz;
50 s pre-emphasis
1 kHz; modulation frequency
deviation 75 kHz;
10% pilot carrier (L = R)
1 kHz; modulation frequency
deviation 75 kHz;
10% pilot carrier (L = R)
1 kHz; modulation frequency
deviation 75 kHz;
10% pilot carrier (L = R)
1 kHz; modulation frequency
deviation 22.5 kHz
5
MIN.
Preliminary specification
5
4
46
AUDIO
MAX.
FM1246
kV
dB V
UNIT