[557] ronja/installations/czech/prague/ujezd/scope.jpg

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RX signal

Signal z prijimace.

The slope of the 1MHz signal (thick) is caused by high-pass filter and is s it should be. The thin lines are data signal. It is obvious there are some kind of reflections or ringing in the signal path. It may be badly matched oscilloscope probe or the effect of parasitic feedback in the amplifier with PCB construction.

Sklon 1MHz impulsu (tluste) je zpusoben horni propusti v signalove trase a podle pohledu je takovy, jaky ma byt. Tenke cary jsou datovy signal a je videt, ze v signalove trase jsou odrazy nebo to tam zvoni. Muze to byt spatne prizpusobenou sondou osciloskopu a nebo v prijimaci stavenem na tistaku muze byt parazitni zpetna vazba.