SAA7284GP Philips Semiconductors, SAA7284GP Datasheet - Page 21

• Manufacturer Part Number: SAA7284GP
• Description: Terrestrial digital sound decoder for conventional intercarrier PLL-IF systems
• Manufacturer: Philips Semiconductors

Philips Semiconductors
SYSTEM PERFORMANCE
Bit Error Rate (BER)
Table 17 shows input signal conditions which typically produce bit error rates of less than 10
are related to the picture carrier reference level (0 dB) and based on the output level of the set up as shown in Fig.8.
All measurements are at RF and using Philips Semiconductors SAA7284 Applications Board.
Table 17 System performance
Notes
1. Measurements made with colour bar at 100% modulation.
2. 10 dB sound shelf with extended bandwidth for NICAM signal.
3. 14 dB sound shelf with extended bandwidth for NICAM signal.
Acquisition time
Maximum acquisition time = 1 s, measured from power-on to reset in-sync condition achieved.
1996 Oct 24
Picture carrier RF level (FM deviation = 50 kHz)
NICAM level with respect to picture carrier (FM deviation = 50 kHz)
FM overmodulation
Terrestrial digital sound decoder for
conventional intercarrier PLL-IF systems
a) FM level = 10 dB system I; 13 dB system BG.
b) NICAM level = 20 dB (unless otherwise specified).
INPUT SIGNAL CONDITIONS
(1)
21
SYSTEM I
SAW A
>120
35
35
(2)
SAW B
>100
35
34
SYSTEM BG
3
. Signal levels given in dB
(2)
Preliminary specification
SAW C
>100
SAA7284
35
32
(3)
UNIT
kHz
dB
dB