L/S-Band burst-mode spread-spectrum transceiver

com1931 block diagram


KEY FEATURES
  • L/S-band modem to send and receive short UDP frames over wireless, satellite or cable. (For continuous-mode see COM-1918)
    • Direct-Sequence Spread-Spectrum (DSSS) modulation
    • Nominal frequency of operation: 950 – 2175 MHz for direct connection to external LNB or BUC. Customization to other frequency bands is possible.
    • Burst mode operation:
      • fixed-length 512-bit data frames from/to LAN/UDP ports
      • Multiple frames transmitted efficiently with only 32-symbol separation
    • Acquisition: 1600-symbol preamble with no apriori knowledge of arrival time
    • Large frequency acquisition range: (chip_rate / 64) or (1.8*symbol_rate), whichever is smaller, with no apriori knowedge
    • End-to-end latency: 2672 symbol / modulation symbol rate. For example 1.2ms at 2.5Msymbols/s
    • Programmable chip rate, up to 40 Mchips/s
    • Data rate: practical range from chip_rate/2047 to chip_rate/30
    • Aluminum enclosure with rubberized end caps. L x W x H: 168.5mm x 138.96 mm x 40.98 mm.
    • Supply voltage: 18 - 36VDC with reverse voltage and surge protection. 5.6V min when no supplying external LNB power.
    • Frequency reference: internal TCXO or input for an external, higher-stability 10 MHz frequency reference
    • Built-in tools: PRBS-11 pseudo-random test sequence, BER tester, AWGN generator, internal loopback mode
    ComScope-enabled: key internal signals can be captured in real-time and displayed on the host computer

    COM-1931
    Other L/S-band transceivers
    COM-1902: L/S-band burst-mode PSK transceiver
    COM-1905: L/S-band continuous-mode PSK transceiver
    COM-1918: L/S-band continuous-mode spreads-spectrum transceiver
    All
    Documentation
    Specifications (810 KB)
    Schematics
    Purchase Online
    $1250 COM-1931