Method and apparatus for calibration of digital test equipment

Details Method and apparatus for calibration of digital test equipment Method and apparatus for calibration of digital test equipment

1995-12-04

1997-07-29

Voeltz, Emanuel T.

Boots, shoes, and leggings

379 3, 379402, 379345, 375345, 324601, 324605, 324606, 324607, 324616, H04M 124

Patent

active

056527128

ABSTRACT:
A processor controlled test set for testing special service circuits of a telecommunication system. A microprocessor controls the overall operation of the test set, while a digital signal processor provides high speed timing signals to the various test circuits for generating the wave forms used in testing, as well as analyzes the test result signals that are converted into digital signals. A calibration of the test generator signals as well as the signal measuring path is carried out prior to the test sequence. The digital signal processor also provides gain control over a talking path to maintain stability thereof. An I/O circuit of the test set provides plural communication paths between remote equipment and the test set to initiate and carry out various tests. Processors in the I/O module are effective to convert the various protocols of the serial data, by way of software, to digital bit streams usable by the test set.

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VFR5050 Variable Voice Switched Gain Repeater, 1991.
"Interface Between Loop Carrier Systems and Loop Testing Systems," Bell Communications Research--Technical Reference TR-TSY-000465, Apr. 1987.
"Digital Data System Channel Interface Specification," Bell System Technical Reference--PUB 62310, Sep. 1983.

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