Fluke 54200 - Page 191

Function Reference
BTSC Sound
5
5-49
Figure 5-34 shows a simplified diagram of a BTSC transmitter system. The BTSC
modulation standards and the maximum allowed peak deviations are shown in
Table 5-15.
Figure 5-34. Simplified Diagram of a BTSC Transmitter System
Table 5-15. BTSC Sound Carrier Modulation Standards
Service
or
Signal
Modulating
Signal
Modulating
Frequency
Range
kHz
Audio
Processing
or
Pre-
Emphasis
Subcarrier
Frequency *
Subcarrier
Modulation
Type
Subcarrier
Deviation
kHz
Sound
Carrier
Peak
Deviation
kHz
Mono Sound
Pilot Subcarrier
Stereo Sound
SAP
Second Progr.
L + R
–
L - R
–
.05 - 15
.05 - 15
.05 - 10
75 µs
BTSC
Compression
BTSC
Compression
–
fH
2 x fH
5 x fH
AM-DSB
SC
FM 10
25
•
5
50
•
15
* fH = 15.734 kHz
•
Sum does not exceed 50 kHz