This shows you the differences between two versions of the page.
Both sides previous revision Previous revision | |||
decibel [2011/06/30 08:55] ramonturner |
decibel [2011/07/11 23:17] (current) admin |
||
---|---|---|---|
Line 15: | Line 15: | ||
40 dB attenuation indicates 0.0001 of the input power survives\\ | 40 dB attenuation indicates 0.0001 of the input power survives\\ | ||
It should also be mentioned that often dB ratios are expressed using a third letter (or letters), such as dBm. The third letter is a reference level for the log operation. In our dBm example, dBm is used to define dB levels in a 50 Ohm RF system, using a 1 milliwatt reference level. | It should also be mentioned that often dB ratios are expressed using a third letter (or letters), such as dBm. The third letter is a reference level for the log operation. In our dBm example, dBm is used to define dB levels in a 50 Ohm RF system, using a 1 milliwatt reference level. | ||
- | |||
- | [[http://essaywritingservices.org/prices.php|write my paper]] | ||