Power Amplifier; Input Voltage - PeakTech 4055 MV Bedienungsanleitung

4.16. Power amplifier

The unit has an integrated power amplifier. It is an independent component of the generator, 'Amplifer In'
in rear panel is input connector of power amplifier and 'Amlifer Out' is output connector of power amplifier.
Connect the input signal to 'Amplifer In' connector, then amplified signal can be obtained at the connector
of 'Amlifer Out'. The input signal can be the output signal of this instrument or other device's.
4.16.1 Input Waveform
Sine.
For other waveforms, the distortion will be too big. It is not recommend to input other waveforms
than sine.

4.16.2. Input voltage:

The multiple of the power amplifier is double and the maximum output amplitude is 9 V
maximum input amplitude should be limited within 4,5 V
limitation.
4.16.3. Frequency range:
The frequency range of the power amplifier is 100Hz ~ 10kHz.
4.16.4. Output power:
* The expression of power for the power amplifier is
* Where, P is the output power (the unit is W), V is the output virtual amplitude value (the unit is Vrms), R is
the load resistance (the unit is ).
* The maximum output amplitude can reach 9 V
Besides, the higher the temperature of the working environment, the larger is the frequency of the output
signal and the greater distortion of the output signal. Usually, the maximum output power can reach 10 W
(8).
4.16.5. Output protection:
The power amplifier is of short circuit protection function and over heat protection. Usually it is unable to
be destroyed but long time output short circuit should be avoided. The frequency, amplitude and loading
should be best within the limitation, two of which, especially, cannot get the limitation at the same time in
case that the power amplifier is damaged.
. The output signal will be distorted beyond the
RMS
2
P = V / R
and the minimum load resistance can be 2.
RMS
-53-
. So the
RMS