ACRA CONTROL
GTS/DEC/003
20Mbps bit synchronizer and PCM decommutator PCI card
Description
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 one independent, programmable matched filter and Phase Locked Loop (PLL) to track deviations in the bit-rate of the received signals.
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 one independent, programmable matched filter and Phase Locked Loop (PLL) to track deviations in the bit-rate of the received signals.
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 1µs.
Features
- Bit error rate performance within 1dB of theory
- Programmable loop bandwidth (0.01 to 2.0%)
- Bit-rates up to 20Mbps (NRZ-L codes)
- 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
- Internal and external connection
- Generates PCM data with 16-bit counters
Applications
- Real-time ground stations
- Telemetry data links
Bit synchronizer and PCM decommutator channel