DSSS Modulator 20 Mchip/s
KEY FEATURES
  • A higher-performance newer generation DSSS modulator is now available: COM-1519
  • Direct sequence spread-spectrum (DS-SS) Modulator
  • Programmable chip rates up to 20 Mchip/s
  • Spreading codes:
    • Gold sequences (up to 223-1 chips)
    • Maximal length sequences, (max length 223-1 chips)
    • Barker codes (length 11, 13)
    • GPS C/A codes
  • Code modulation: BPSK/QPSK/OQPSK with output spectral shaping filter: raised cosine square root filter with 20%, 25%, 35% or 40% rolloff. Filter can be bypassed.
  • Internal generation of pseudo-random bit stream and unmodulated carrier for test purposes
  • Built-in channel impairments generation:
    • additive white Gaussian noise
    • frequency offset (Doppler)
    ComScope-enabled: key internal signals can be captured in real-time and displayed on a host computer
  • Connectorized 3”x 3” module for ease of prototyping. Standard 40 pin 2mm dual row connectors (left, right). Single 5V Supply with reverse voltage and overvoltage protection. Interfaces 3.3V LVTTL logic

  • ComBlock COMPATIBILITY LIST
     
    Input Output
    COM-1509 Convolutional encoder, K=5,7,9 COM-2001 Digital to Analog conversion, baseband
    COM-7002 Turbo code encoder COM-4004 70 MHz IF modulator
    COM-8001 Pattern generator 256MB/1GB COM-1518 Direct sequence spread-spectrum demodulator (digital back-to-back)
    COM-8004 Signal Diversity Splitter COM-1524 Channel emulator (Doppler, delay, fading, noise)
    COM-5003 TCP-IP / USB Gateway

     

    COM-1019
    Other Modulators
    DSSS 60 MChips/s
    PSK/QAM/APSK
    FSK/MSK/GFSK/GMSK
    Specifications
    (353 KB)