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Rohde & Schwarz EFA DVB-C Digital TV Receiver/Demodulator (EFA model 20)
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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