Types of Digital Pattern Generators
Digital pattern generators are today available as stand-alone units, add-on hardware modules for other equipment such as a or as PC-based equipment.
Stand-alone units are self-contained devices that include everything from the user interface to define the patterns that should be generated to the electronic that actually generates the output signal.
Some test equipment manufacturers propose pattern generators as add-on modules for logic analyzers (see for example the PG3A module for Tektronix' TLA7000 series of logic analyzers). In this case, the pattern generator is the 'generation counterpart' to the analysis functionality offered by logic analyzers.
PC-based digital pattern generators are connected to a PC through peripheral ports such as PCI, USB and/or Ethernet (see for example the 'Wave Generator Xpress' from Byte Paradigm, connected through USB). They use the PC as user interface for defining and storing the digital patterns to be sent.
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