Sanwa PC5000, Instruction Manual

Page: 12 / 46

— 9 —
4-13 Words
Analog Bargraph
The analog bargraph provides a visual indication of measurement
like a traditional analog meter needle.
AC coupling True RMS
When measurement is taken by true r.m.s., the measurement
value of input signal becomes the scales of the signal power
and therefore provide more effective values than those
obtained by average value detection. This multimeter imploys
this true RMS circuit, which enables measurement of sine wave
and non-sinusoidal waves like square wave and triangular
wave in r.m.s.
AC+DC coupling True RMS
DC+AC True RMS calculates both of the AC and DC components
given by the expression when making
measurement, and can responds accurately to the total
effective RMS value regardless of the waveform.
Crest Factor
The crest factor (CF) is expressed by a value obtained by
dividing the peak value of the signal by its RMS value. Most
common waveforms such as sine wave and triangular wave
have a relatively cycle have a high crest factor. The voltages
and crest factors of typical waveforms are shown in the table.
DC
2
+(AC rms)
2