Osciloscope + active 1 GHz probe

[yura717]

Hello everybody,
Can I use 500 Mhz bandwidth oscilloscope with active 1 Ghz probe to analyze 1 Ghz signals ? Or I should have 1 GHz oscilloscope for that ?
Thank you.

 

[semicon11]

As a rule of thumb, your scope’s bandwidth should be at least five times higher than the fastest digital clock rate in your system under test.

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[AP31]

The short answer is, "NO". You need at least a 1GHz scope, but for square wave signals you'll need even a higher frequency scope because square wave signals are comprise of odd harmonics.If not the waveform on the scope will not look like a square wave because of the bandwidth limitation of the scope.