why the signal from a 50-ohm output impedance device should be checked by a scope channel with a 50-ohm input impedance?

From: "for_idea" <zhiyang@xxxxxxxxx>
Date: 18 Nov 2005 07:40:25 -0800

As I understand, if the scope channel has 1 meg ohm input impedance,
the received signal would be stronger since most of the voltage is
taken by the input channel. Why people always say 50 ohm is a proper
input impedance for the scope channel?

thanks,

Zhi

.

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