Tektronix DDS200 DVB-C Digital TV Receiver/Demodulator

Tektronix DDS200 DVB-C Digital TV Receiver/Demodulator
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Tektronix DDS200 DVB-C Digital TV Receiver/Demodulator Tektronix DDS200 DVB-C Digital TV Receiver/Demodulator Tektronix DDS200 DVB-C Digital TV Receiver/Demodulator
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Manual Specifications

 

RF Characteristics

 

  • Frequency Range: 47 to 862 MHz.
  • Level Range: 100 µV to 700 mV (40 to 117 dBµV).
  • Impedance: 75  ohms.
  • Connector: Front panel BNC, female.
  • Channel Bandwidth: 8 MHz.

 

IF Characteristics
  • Input:
    Level: 10 to 100 mV (80 to 100 dBµV).
    Impedance: 50  ohms.
  • Output:
    Level: 45 mV (93 dBµV).
    Impedance: 50  ohms.

 

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  ohms BNC, female.
  • QAM Serial Data Output (before Reed-Solomon):
    Connector: Rear-panel 75  ohms BNC, female.
  • QAM Serial Data Clock:
    Connector: Rear-panel 75  ohms 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