Telecommunications – Transmitter and receiver at separate stations – Having measuring – testing – or monitoring of system or part
Patent
1985-04-01
1986-11-25
Bookbinder, Marc E.
Telecommunications
Transmitter and receiver at separate stations
Having measuring, testing, or monitoring of system or part
371 22, 371 27, 455226, H04B 1700
Patent
active
046253327
ABSTRACT:
A programmable time varying attenuator has a reprogrammable digital circuit or impressing an analog attenuation signal on a continuous wave noise signal. This signal is fed to the input of a receiver and since the digital circuitry can be reprogrammed with a known sequence to effect a desired analog attenuation, a receiver's performance can be monitored and evaluated when the attenuated signal or error signal is simultaneously received with information signals. A desired time relationship between the information signals and the time varying attenuating test signal or error signal is maintained since both are slaved to a common standard. The programmable time varying attenuator is programmable independent of the information signal source and, therefore, is adaptable with different sources while being a highly reliable and cost effect device for system testing.
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Conrath James L.
Singer Paul A.
Beers Robert F.
Bookbinder Marc E.
Johnston Ervin F.
Keough Thomas G.
The United States of America as represented by the Secretary of
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