Velleman APS230, Руководство пользователя

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A ps 2 3 0 A D VA N CE D Per s o n al S c o pe TM
Meter readout
Fig 29
15
15. dBm measurement (dBm ac+dc).
The measured signal (ac+dc) is converted to
dBm (0dBm=0.775V).
16. dBG measurement (dBG ac+dc).
The gain between channels 1 and 2.
(excludes dc).
If we measure the amplification on channel 2,
the relation will be:
•
Channel 1: input signal
•
Channel 2: output signal
17. dB measurement (dB ac+dc).
The measured signal (ac+dc) is converted to
dB (0dB=dBref).
18. ac+dc power
AC+DC power calculation into selected impe-
dance (a normal audio signal does not feature a
DC component).
16
17
18
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 and key.