Features: Four independent functional blocks are provided: (i) two independent pseudo-noise, PN, sequence generators each with 10 switch-selectable multiple length sequences of up to 214-1 bits; (ii) two independent Exclusive-OR functions with analog and digital level outputs to implement modulo-2 addition. Each PN sequence generator and EX-OR pair is used to implement a Direct Sequence Spread Spectrum, DSSS, channel. Two DSSS channels, (2 channel CDMA), can be implemented per module: additional MULTIPLE SEQUENCES SOURCE modules may be used to implement larger multi-channel CDMA schemes. The sequences are stored in EPROM and an optional TIMS-Interactive program allows the user to generate a file for programming custom EPROMs. Specifications: Number of Sequence Generators 2 independent PN sequence generators CLK Input more than 1MHz, TTL-level RESET Inputs positive going TTL-level pulse or front panel push button to reset the sequence SEQUENCE Output TTL-level, length of up to 214-1 bits The MULTIPLE SEQUENCES SOURCE is a module from Emona.
