Automatic deviation analysis meter

Details Automatic deviation analysis meter Automatic deviation analysis meter

1975-03-24

1977-01-04

Safourek, Benedict V.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

Frequency of cyclic current or voltage

324 77C, G01R 2316

Patent

active

040016951

ABSTRACT:
A system for automatically measuring frequency deviation without manual tuning or frequency selection includes a transfer oscillator circuit which is switchable between fast and slow loop response modes by use of a squelch indication. In addition, a varactor in the voltage controlled oscillator is conditionally operated in the less sensitive portion of its tuning range. This is accomplished by inhibiting the squelch, thus preventing a frequency lock in the undesired portion of the varicap tuning range when the higher frequencies are applied to the input.

REFERENCES:
patent: 3217255 (1965-11-01), Broadhead, Jr. et al.
patent: 3369236 (1968-02-01), Westerfield et al.
patent: 3447084 (1969-05-01), Haner et al.
patent: 3541449 (1970-11-01), Broderick et al.

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