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How to get two Sweep and Repeat Generators in sync.

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Tractor Beam

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What is the best way to make a sign wave shift frequency downward only about 10 Hertz, then repeat every .2 seconds.
The initial frequency 3000 Hz.
There will be 2 generators sweeping, both will be in sync (repeat at the same time).

See attachment for drawing.
 

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FvM

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Depends on the generator. Popular arbitrary function generators can sync their sweeps through trigger out and sync in jacks, e.g. Agilent 33220A.
 

BradtheRad

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Many types of oscillators change frequency if you change supply voltage. Or you can 'bend' an RC time constant by changing a resistance somewhere in the circuit, or by applying a voltage at a strategic node. Many oscillators have their frequency determined from an RC time constant.
 

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