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NC200A/IC Factum Radioscape TV Equipment Used

NC200A/IC Factum Radioscape TV Equipment Used

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Additional Features:

  • AD conversion of two sound (stereo) channels
  • Transcoding of digital sound signals to NICAM format
  • QPSK modulator
  • Optional Encoder-only version
  • Optional 2-channel Encoder version
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Specifications
Datasheets

Audio Inputs

  • Nominal level (NICAM test level): 0 dBu (differential inputs)
  • Impedance: 600 Ohms ±1% alt. high impedance
  • Connector: XLR, female type

FM Channel Audio Output

  • Mono Mode: M1/left channel
  • Stereo Mode: (A+B)/2
  • Gain: 0 dB (sel. +3 dB in stereo mode)
  • Impedance: < 1 Ohm, electronically floating output (either side may be grounded)
  • Load: > 600 Ohms
  • Frequency Response: within ±0.1 dB, DC -20 kHz
  • Overload level: Balanced: > +24 dBu; Side grounded: > +18 dBu
  • Noise: < -92 dBu rms 20 Hz-20 kHz
  • Distortion: < 0.005%
  • Crosstalk: < -100 dB (M2 to M1)
  • Connector: XLR, male type

A/D Conversion

  • Pre-emphasis: CCITT J.17 (analogue)
  • Digital Overload Level System BG/DK: +22 dB at 400 Hz
  • Digital Overload Level System I: +24.3 dB at 400 Hz
  • Sampling Frequency: 4096 kHz
  • Resolution: 16 bits (delta/sigma)
  • Frequency Response: 20 Hz-13.75 kHz: within ±0.2 dB (rel. ideal CCITT J.17); 14 kHz: -0.5 dB; 14.75 kHz: -3 dB; >17.3 kHz: < -65 dB
  • Crosstalk: < -90 dB at 1 kHz
  • Distortion THD+N: 0.01% at 1kHz max input (typical)
  • NICAM Encoded Signal: 0.04% (typical)
  • Noise: -70 dB rel. 0 dBu (typical)

Stereo/Dual Mono Mode Switching Input

  • Stereo: Logic ‘1’
  • Mono: Logic ‘0’
  • Connector: 3.5mm jack
  • Electrical Interface: CMOS input with 10kOhms pull-up resistor

Data + Clock Output (Optional)

  • Logic Levels: ±2.5 V into 75 Ohms load
  • Impedance: 75 Ohms, ± 10%
  • Polarity: Positive voltage, logic ’one’
  • Phasing: Data changes on negative clock transitions
  • Connectors: BNC

NICAM Intercarrier Signal Output

  • Frequency - System BG/DK: 5.850 MHz
  • Frequency - System I: 6.552 MHz
  • Impedance: 75 Ohms
  • Subcarrier Accuracy: ± 2 ppm when locked to internal reference
  • Spectrum Shape –System BG/DK: Roll-off 0.4
  • Spectrum Shape –System I: Roll-off 1.0
  • Demodulated Response: eye height > 85%
  • Harmonics and Spurious Noise: < -50 dB rel. NICAM carrier level
  • Connector: BNC

Power Supply

  • Voltage: 100V – 264V AC
  • Frequency Range: 48Hz – 64Hz
  • Connector: IEC 320
  • Typical Power Consumption: 15W (typical)

Chassis

  • Type: 19” rack-mounting
  • Dimensions: 44mm (h) x 482mm (w) x 360mm (d)

Environmental

  • Operating Temperature: +5° - 50°
  • Humidity: 10% - 85% noncondensing

The Factum Radioscape NC200A/IC is an Encoder/QPSK Modulator for NICAM 728 System B/G, D/K and I. The Encoder is mainly used in broadcasting networks, but also used for CATV and in laboratories. The output is a QPSK modulated carrier at intercarrier frequency, locked to the bit-rate. The NC200A/IC converts analogue stereo sound via A/D conversion of two sound (stereo) channels, Transcoding of digital sound signals to NICAM format and QPSK modulation. Options include a 2-channel version and an Encoder-only version with Data + Clock output.

Model No

NC200A/IC

Condition

Used

Manufacturer

Factum Radioscape

Factum Radioscape NC200A-IC
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