Chapter 2 Design and Characteristics
2104.6536.72 - 2.10 - E-1
SFN
To TS 101191
– Delay adjustment 1000 ms (automatic and manual)
– Adjustment step size 100 ns
– Accuracy better than ± 350 ns (with 1 pps buffering; otherwise 150 ns)
– 1 pps buffering and monitoring
– Buffering and monitoring of an external reference frequency
– Floating time of transmission tracking by means of processing clock control
3.2.2.2 Transmission properties (DVB)
Transmission parameters .......................... to ETS 300 744
Frequency response .................................. f
0
± 3.805 MHz 1 dB
Shoulder distance
DVB bandwidth 8 MHz at f
0
± 4.2 MHz
(without output bandpass filter) ............ 37 dB (with precorrection)
DVB bandwidth 7 MHz at f
0
± 3.7 MHz
(without output bandpass filter) ............ 37 dB (with precorrection)
Compliance with spectrum mask ............... to ETS 300 744 with output bandpass filter
(6 circuits for uncritical mass, 8 circuits with
suitable tuning for critical mass)
3.2.2.3 Supported modulation parameters (ATSC)
ATSC Encoding and Modulation
Encoding and modulation .......................... To ATSC Doc. A/53 with following parameters:
Channel bandwidth ............................... 6, 7, 8 MHz
Input Processing
– All ASI modes (continuous, packet, burst) in line with DIN EN 500083-9
– Input FIFO: 8 k ± 20 transport packet burst
– Input switchover, manual and automatic
– Seamless input switching
– Input monitoring by means of Packet Lock
– MFN with stuffing and PCR correction
– FIFOs can be disabled as buffers for dynamic delay changes (0.5 – 2 ms depending on
data rate)
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