The unit of measure is the unit used to compare similar to dBm only measure will vary in terms of signal or coming with a standard that may be less than, or greater than 1 mW ก้ได้ and when comparing, then the result of comparison is in terms of the average result in the unit of measure the unit of measure VU VU VU meter the VU meter adjust the 0 VU to do this, enter a 1 KHz frequency sine signal voltages fall across 600 775 mV oha is equal to the load, which will have a value of 1 mW at this position, the meter will read zero VU or called the reference level.
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