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IRIG-106 PCM decoder/merger and packetizer (40 Mbps) - 2ch
The AXN/PCM/401 is a dual PCM decommutator that can accept two independent PCM streams. Data from each stream is individually parsed into a minor frame buffer from which it can be read coherently over the backplane.
When decommutating PCM streams, a minor frame is parsed into a coherent buffer. All parameters read are guaranteed to be from the same minor frame. If data is read slower than it is received, minor frames are skipped occasionally. If data is read faster than it is received, minor frames are repeated (stale) occasionally. It is recommended that the stale and skipped indication be read.
The AXN/PCM/401 generates packetizer packets (throughput mode; if packetization is enabled). The packetizer packets are sent provided data is received on the channel; they consist of data and parity bits (if parity is used).
The AXN/PCM/401 is a dual PCM decommutator that can accept two independent PCM streams. Data from each stream is individually parsed into a minor frame buffer from which it can be read coherently over the backplane.
Features
- Decommutates up to two IRIG-106 PCM streams using clocked line (up to 40 Mbps) or self-clocking codes (up to 20 Mbps)
- Up to 4k words per minor frame (16-bit) with programmable word length (4-16 bits), parity (odd/even/none) and word orientation per word
- PCM packetizer support
- Clocked line codes supported: NRZ-L, NRZ-M, NRZ-S, RNRZ-L-15,
- Self clocking codes: DM-M, DM-S, Bi-Phase-L, Bi-Phase-M, Bi-Phase-S, RZ
Applications
- Distributed data acquisition systems
- PCM decoders/mergers
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AXN/PCM/401