LS-50-V Lumistar VME Multi-Function PCM Decommutator

The Lumistar LS-50-V VME Multi-Function PCM Decommutator offers the greatest flexibility in the industry by incorporating up to 1 0 functions typically encountered in test applications in a single VME card slot. Five functions are accomplished on the main board and additional functions are achieved through the use of low - profile daughter - boards. The main VME board shown below contains a PCM Simulator which can also operate as a BERT, PCM Decommutator, IRIG Time Code Reader, and IRIG Time C ode Generator. Two unique daughter - boards are accepted by the LS - 50 - V but only one can be used at a time due to the physical size of the VME board. One of these is the L S - 40 - DB - 10, LS - 40 - DB - 20 or LS - 40 - DB25 Bit Synchronizer Daughterboard, and the other the L S - 55 Multi - function Decom Daughterboard. The LS - 40 - DB accepts PCM inputs up to 10 or 25 Mbps (depending on the model selected) and corrects for corruption by noise, phase jitter, amplitude modulation, or baseline variations. The LS - 55 - DB allows the addition of a second multi - function board with 5 additional functions , including second decom, second simulator with BERT capability , time co de reader, time code generator.

The IRIG Time Code Reader and Generator operate with IRIG A, B, or G time code formats. The Time Code Generator creates and outputs time information in accordance with IRIG Time Code Standards. The Time Code Reader is typically used to insert time information into the PCM minor frame block of data. The Lumistar LS - 50 Decom can be used for extremely large formats (16,383 words per minor frame by 1,024 frames deep) and contains dual ping - pong data buffers with 128K bytes of memory. When used with the LS - 55 - DB, the second decom can be used for an independent PCM data stream or an embedded data stream in accordance with the IRIG - 106 Standard. The PCM simulator generates common, unique, and waveform pattern data words. When used with the LS - 55 - DB daughterboard, the user can also generate complex data streams with embedded PCM data, or two totally independent data streams.