Differences

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--- analyzer:hardware [2009/03/08 11:42] – sestst
+++ analyzer:hardware [2018/11/03 02:59] (current) – external edit 127.0.0.1
@@ Line 4: / Line 4: @@
 {{:upm_scheme.png|}}
-The capacitor C2 is usually not needed, it is used to remove interference if the signal source is a sensitive radio receiver.
+The capacitor C2 is usually not needed, it is used to remove HF interference from the computer if the signal source is a sensitive radio receiver.
 ===== IR-Remotes =====
 Infrared remote controls is a typical example on protocols that can be decoded. The protocols used are typically quite simple with pulse lengths around 1 ms. The signals are almost always AM-decoded over a base frequency of 38KHz. To decode the real signal we need a decoder. Fortunately, these decoders are very cheap and easy to use.