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*The pictures may differ depending on the type of PersonalScope
14
3. Minimum voltage (Vmin.).
The signal's negative peak voltage (difference between zero and lowest value) is displayed.
4. Peak to peak (Vpp).
The signal's peak-to-peak voltage (difference between highest and lowest value) is displayed.
5. True RMS readout (Vrms ac)
The true RMS value of the AC wave is calculated and converted to voltage.
6. dBV measurement (dBV ac).
The measured signal (ac only) is converted to dBv (0dB= 1V).
7. dBm measurement (dBm ac).
The measured signal (ac only) is converted to dBm (0dB= 0.775V).
8. dB measurement (dB ac).
The measured signal (ac only) is converted to dB (0dB= dBref*)
9. True RMS readout (Vrms ac+dc)
The true RMS value of the wave (ac+dc) is calculated and converted to voltage.
10. dBV measurement (dBV ac+dc).
The measured signal (ac+dc) is converted to dBv (0dB= 1V).
11. dBm measurement (dBm ac+dc).
The measured signal (ac+dc) is converted to dBm (0dB= 0.775V).
12. dB measurement (dB ac+dc).
The measured signal (ac+dc) is converted to dB (0dB=dBref)
*dB ref
Select dBref to set the user defined reference for dB measurement; the selected meter will be set for dB
measurement.
Audio power calculation.
The measured voltage is converted into power, supposing that the voltage is measured across an
impedance. The calculated power can be displayed for loads of 2, 4, 8, 16 or 32 Ohm. To choose the
different loads, first highlight the power readout and then press the right cursor key.
13. W ac
AC Rms power calculation into selected impedance
(most used).
14. W peak
Peak power calculation into selected impedance.
15. W ac+dc
AC+DC power calculation into selected impedance
(a normal audio signal can not have dc component).
G Notes:
• If the signal goes off-screen or when the signal is too small for measurement, the readout will
show ??? (see fig 23)
Fig 22
13 14 15
E
Fig 23
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