Single Frequency Function; Frequency Setting; Period Setting; Amplitude Setting - PeakTech 4055 MV Bedienungsanleitung

4.2. Single frequency function

* After booting, the generator enters continuity function automatically, continuity function means the output
signal is stable and continuous, of which the waveform, frequency, amplitude and phase will not change
along with the time change.

4.2.1. Frequency setting:

* Press【Freq】key, the light of which will be on, to display present frequency value. Input frequency value
with numeric keys or adjusting knob and the signals of this frequency will be output from the output port.

4.2.2. Period setting:

* Press【Freq】key, the light of "Period" will be on, to display present period value, input period value with
numeric keys or adjusting knob. Frequency is synthesized in the internal of the generator, and converted
to period when inputting and displaying. Limited by the frequency low resolution, for a comparatively long
period, the generator could only output some frequency points with long period interval. Although the
setting and displaying period value are accurate, the period of actual output signal may be comparatively
different from them, which should be under consideration during operations.

4.2.3. Amplitude setting:

* Press【Ampl】key, the light of which will be on, to display present amplitude value, input amplitude value
with numeric keys or adjusting knob and the signals of this amplitude will be output from the output port.
* The relation between maximum amplitude and offset value should be below formula, if the setting of
amplitude exceeds specification, the generator will modify it until it is within the range of allowed
maximum amplitude value.

4.2.4. Format of amplitude value:

There are two forms for amplitude input and display: peak-peak form and RMS form.
* Press 【Vpp】or【mVpp】to input amplitude peak-peak value after inputting the digits.
* Press【Vrms】or【mVrms】to input amplitude RMS value. RMS value is applicable only to sinewave,
square wave and ramp wave, and other waveforms could only be shown by amplitude peak-peak value.

4.2.5. Amplitude attenuation setting

* Press 【Ampl 】key to light "Atten" and show the present attenuation value. Amplitude attenuation is auto
as default of booting and there display "Auto" the generator will select automatically proper attenuation
proportion according to the amplitude setting value, higher amplitude resolution, higher signal-noise ratio
and less waveform distortion could be realized at the same time regardless of the amplitude magnitude of
the signal. The output signal makes a momentary hop when the attenuation changes, which is not
welcome in some operations, but the generator has fixed attenuation function to avoid this circumstance.
Input attenuation values of 0dB, 20dB, 40dB and 60dB with the numeric keys, input 80dB to select auto
attenuation. Users may use the adjusting knob as well, the attenuation changes to next one for every step
of the rotation. When select fixed attenuation mode, the attenuation is fixed while the signal amplitude
changes, and the output signal could changes continuously within the whole amplitude range. But higher
distortion of the waveform and poor signal-noise ratio maybe appear when the attenuation is 0dB and the
amplitude of the signal is small.
Vpp≤2× (10-|offset|)
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