12
AMB 307
Part N
o
: 9730.01
COFDM Modulator
ASI-TS
→
DVB-T (COFDM)
B
LINE
13. Application example
14. Technical data
ASI input
Level range
200 … 880 mV
pp
System clock
270 Mbps
Connector
BNC socket
Impedance
75 Ω
ASI polarity
regular/ inverted
ASI output
Level
800 mV
pp
(± 10 %)
System clock
270 Mbps
Connector
BNC socket
Impedance
75 Ω
ASI polarity
regular
ASI signal processing
Data rate
0.625…213 Mbps
ASI transfer format
Input
continuous, burst
Output
burst
TS transfer format
Input
188, 204 Byte
Output
188, 204 Byte
Signal processing
EN 50083-9 [1]
COFDM modulator
Transmission mode
2k, 8k
Guard interval
1/4, 1/8, 1/16, 1/32
Constellation
1/2, 2/3, 3/4, 5/6, 7/8
Hierarchical modulation
QPSK, 16 QAM, 64 QAM
Hierarchical protect mode
Alpha 1, 2, 4
Bandwith
5, 6, 7, 8 MHz
RF output
Output frequency range
45 ... 862 MHz
Tuning step
10 kHz
Max. output level
115 dBµV
Level adjustment range
0 ... 31.5 dB (0.5 dB steps)
Channel allocation
adjacent channel ability
Connector
F socket
Impedance
75 Ω
Return loss
≥ 18 dB 45 MHz
- 1.5 dB/ Octave
Signal quality
MER
≥ 43 dB
Shoulder attenuation
≥ 58 dB
Spurious 45...862 MHz
≥ 60 dB
C/N (> 25 MHz space from channel center)
BW = 5 MHz
typ. 80 dB
BW = 8 MHz
typ. 78 dB
Phase noise
1 kHz; typ. -92 dBc/ Hz
10 kHz; typ. -101 dBc/ Hz
100 kHz; typ. -108 dBc/ Hz
max. frequency stability
± 30 kHz
Output level stability
± 0.5 dB
Amplitude frequency
response channel (8 MHz)
max. 1 dB
pp
Operating parameters
Voltage/ current
12 V (0.2 V)/ max. 650 mA
Residual ripple of the supply
voltage
≤ 10 mV
PP
Enviromental conditions
Temperature range
-10 ... +55 °C
Temperature range
for data keeping
5 ... 45 °C
Relative humidity
≤ 80 % (non condensing)
Mounting method
vertical
Mounting location
splash-proof
and drip-proof
Physical information
Dimensions (w x h x d)
without 19” adapter
50 x 276 x 148 mm
with 19” adapter
50 x 301 x 148 mm
Weight
1,190 g
Delivery content
1x Bus connector
