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DVB-C Digital TV Receiver/Demodulator
RF
Characteristics
- Frequency Range: 47 to 862 MHz.
- Level Range: 100 µV to 700 mV (40 to 117 dBµV).
- Impedance: 75 Ohm.
- Connector: Front panel BNC, female.
- Channel Bandwidth: 8 MHz.
IF Characteristics
- Input:
Level: 10 to 100 mV (80 to 100 dBµV).
Impedance: 50 Ohm.
- Output:
Level: 45 mV (93 dBµV).
Impedance: 50 Ohm.
Demodulator Characteristics
- Modulation Modes: 4, 16, 32, 64, 128, and 256 QAM.
- Pulse Response Roll-off Factors (selectable): 0.15, 0.20, 0.25, 0.30.
- Insertion Loss (64 QAM): <1.5 dB.
- Symbol Rate: 1.5 to 7 MBaud.
- Equalizer: Self-adapting, selectable, with freeze mode.
- Reed-Solomon Decoder: 204, 188, t = 8, selectable.
- Bit Error Rate Measurement Range: 10-3 to 10-10.
- Interleaving: Interleaver (Forney), L = 12.
- Energy Dispersal: IESS 309 to DVB specification.
Internal Noise Generator
- S/N Ratio (selectable): 12 to 62 dB.
- Resolution: 0.1 dB.
- Filter Selection: Automatic conversion and correct setting of S/N ratio
based on selected filter.
Outputs
- Parallel MPEG Transport Stream:
Standard: LVDS (188 or 204 bytes).
Connector: Rear-panel 25-Pin connector.
- Serial MPEG Transport Stream:
Standard: ASI.
Connector: Rear-panel 75 Ohm BNC, female.
- QAM Serial Data Output (before Reed-Solomon):
Connector: Rear-panel 75 Ohm BNC, female.
- QAM Serial Data Clock:
Connector: Rear-panel 75 Ohm BNC, female.
Measurement Displays
- Graphic: Constellation display.
- Calculated:
Bit error rate (BER).
Frequency offset.
Level.
I/Q phase error in degrees.
I/Q amplitude imbalance in %.
Residual carrier in dB.
Sinusoidal interference (C/I) in dB.
Signal/noise ratio (SNR) in dB.
Phase jitter in degrees.
Modulation Error Ratio (MER) as RMS or peak value.
- Synchronization Information:
Symbol rate
Carrier recovery
Equalizer
MPEG2 frame
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