GTS/DEC/004 Smart Source Selector and PCM decommutator PCI board (20 Mbps) - 2 channels

The GTS/DEC/004 reconstructs a serial PCM data stream from a source that has been corrupted by noise, phase jitter, amplitude modulation, or base line variations. The all-digital design utilizes two independent, programmable matched filters and Phase Locked Loops (PLL) to track deviations in the bit-rate of the received signals.  The output from the bit synchronizers is fed into the Smart Source Selector thereby producing a hard decision (1 or 0) based on the signal quality of the received bits. If the soft values are shifted in time, data is re-aligned prior to combining the soft values.  The recovered data is then decommutated into frames. Each minor frame can be tagged with time from an IRIG-B source to an accuracy of 1 µs.

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Features

  • Bit synchronizer
    • Bit error rate performance within 1 dB of theory
    • Programmable loop bandwidth (0.01 to 2.0%)
    • Bit-rates up to 20 Mbps (NRZ-L codes)
  • Smart Source Selector
    • Aligns over 350 bits
    • Moving match window of 64 bits
    • Uses signal quality estimates to weigh input signals
    • Yields performance gain of up to 3 dB when all channels are used
  • PCM decommutator
    • NRZ-L/M/S, BIØ-L, derandomizer (11,13,15,17, 23)
    • True, Invert or Auto input polarity
    • Sync word length up to 64 bits
    • 0 to 16 bits sync word error tolerance
    • 4 to 64 bits per word
    • 80 to 524,288 bits per minor frame
    • Programmable misses to loss, matches to lock (1-16)
    • Supports digital IRIG-B 000, 001, 002, 003 time formats
  • Loopback tester
    • Internal and external connection
    • Generates PCM data with 16-bit counters

Applications

  • Real-time ground stations
  • Telemetry data links
GTS/DEC/006 Smart Source Selector and PCM decommutator PCI board (20 Mbps) - 3 channels

GTS/DEC/006 Smart Source Selector and PCM decommutator PCI board (20 Mbps) - 3 channels

The GTS/DEC/006 reconstructs a serial PCM data stream from a source that has been corrupted by noise, phase jitter, amplitude modulation, or base line variations. The all-digital design utilizes...

GTS/DEC/003 Bit synchronizer and PCM decommutator PCI board (20 Mbps) - 1 channel

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The GTS/DEC/003 reconstructs a serial PCM data stream from a source that has been corrupted by noise, phase jitter, amplitude modulation, or base line variations. The all-digital design utilizes...

GTS/BSC/003 Bit synchronizer PCI board (20 Mbps) - 1 channel

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The GTS/BSC/003 reconstructs a serial PCM data stream from a source that has been corrupted by noise, phase jitter, amplitude modulation, or base line variations. The all-digital design utilizes...

GTS/BSC/005 Bit synchronizer PCI board (20 Mbps) - 2 channels

GTS/BSC/005 Bit synchronizer PCI board (20 Mbps) - 2 channels

The GTS/BSC/005 reconstructs a serial PCM data stream from a source that has been corrupted by noise, phase jitter, amplitude modulation, or base line variations. The all-digital design utilizes...

GTS/BSC/006 Smart Source Selector PCI board (20 Mbps) - 3 channels

GTS/BSC/006 Smart Source Selector PCI board (20 Mbps) - 3 channels

The GTS/BSC/006 reconstructs a serial PCM data stream from a source that has been corrupted by noise, phase jitter, amplitude modulation, or base line variations. The all-digital design utilizes...

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