This video discusses what 1X and 10X probes are, and how using 1X and 10X passive probes to connect your oscilloscope to your circuit will affect the circuit and the frequency response. It discusses why 1X or 10X probes are used, and how to properly compensate 10X probes. PDF of video notes can be found here:
http://www.qsl.net/w/w2aew//youtube/1x_10x_scope_probe_basics.pdf
