Apparatus and method for verifying performance of digital proces

Details Apparatus and method for verifying performance of digital proces Apparatus and method for verifying performance of digital proces

1994-10-13

1999-08-10

Pham, Chi H.

Pulse or digital communications

Testing

370241, 4552261, H04B 346, H04B 1700

Patent

active

059370041

ABSTRACT:
A testing apparatus for the digital processing portion of a satellite receiver. A software program generates an (I) and (Q) file of root cosine filtered (I) and (Q) DQPSK modulated sampled waveform. The waveform is coupled to a test board that stores the files in a PROM and generates the waveform at a rate determined by the receiver being tested. The output of the test board replaced the A/D converter of the receiver for testing. The waveform impairments are added to the stored software waveform.

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