BMS Truck-Coder II, Installation And Operation Manual, Page: 14 / 49

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Table 2 Analog (FM)
Feature Spec
Video
Video Deviation (MHz)
4.0MHz pk /17 MHz Ch
3.5MHz pk /12 MHz Ch
Video Pre-Emphasis
405
(Per CCIR Recommendation)
VSNR (@12 MHz)
2 GHz 63 dB Typical (60 dB min.)
7 GHz 63 dB Typical (61 dB min)
Audio
Audio Sub-Carriers (2)
Frequency (Programmable)
#1 4.83, 5.5, 5.8, 6.2, 6.8 MHz
#2 5.5, 5.8, 6.2, 6.8, 7.5 MHz
Audio Deviation
± 75kHz pk
Audio Pre-Emphasis
75 µS
Audio Distortion
1% max
Table 3 Digital (COFDM)
Feature Spec
Bandwidth 6, 7, 8 MHz Selectable
Constellation QPSK, 16 QAM, 64 QAM, Selectable
Guard 1/4, 1/8, 1/16, 1/32 Selectable
Code Rate 1/2, 2/3, 3/4, 5/6, 7/8 Selectable
Scrambler Proprietary 6 digit PIN code
MPEG – 2 4:2:0 SP@ML 1.5 – 15 Mb/s, 0.1 Mb/s Resolution
MPEG – 2 4:2:2 SP@ML 1.5 – 32 Mb/s, 0.1 Mb/s Resolution
GOP Structure I/IP/IBBP/422IBBP Variable
GOP Length 6/12/18/24 Selectable
Audio Sampling Rates 32, 64, 128, or 192 kb/s per Channel
Audio, Video, PCR PID User programmable