PeakTech 4055 Handbuch Seite 23

4.1.2. Knob adjusting
* In practice, signal needs to be adjusted sequentially sometimes, so number adjusting knob will be used.
There is a blink position of cursor in the numeric display. Press the key of 【＜】 or 【＞】 to move the
blink cursor leftwards or rightwards. Rotate the knob on the panel can adjust the number sequentially with
increasing 1 by turning it clockwise or decreasing 1 by turning it anticlockwise, even carry or barrow from
high-order digit. By the knob, data come into effect after entering and do not need enter unit key. When the
blink cursor moves leftwards, the data can be adjusted crudely and when it moves rightwards, the data can
be adjusted finely.
4.1.3. Selecting of input way
* For known data, it is the most convenient to use numeric keys as it can be gotten easily without the
generating of transient data no matter how big the change of the data is, which is so important. For the
modifying of the entered data or for entering sequence data, it will be more convenient to use the knob. But
for a series of equidistant data, using step key will be much more convenient. So user should select neatly
according to the different applications.
4.2. Single frequency function
* After power on, the generator enters single frequency function automatically and output single frequency
signal.
4.2.1. Setting of frequency
* Press the key of 【Freq】 to display the current frequency value. The frequency value can be entered
either by the numeric keys or by the knob. The signal of the frequency will be output at the end of
"Output".
4.2.2. Setting of period
* The signal can also be set and displayed in the form of period. Press the key of 【Period】. The current
period value will be displayed. Then use the numeric keys or the knob to enter the period value. But
frequency synthesizing way is still used in the interior of the generator. It is only a conversion when
entering and displaying the data. Limited by the low-end resolution of frequency, only those frequency
points with large distant period can be entered for longer periods. Although the setting and display of the
period are accurate, the period values of real output signal will be greatly different.
4.2.3. Setting of amplitude
* Press the key of 【Ampl】 and the current amplitude will be displayed. Then use the numeric keys or the
knob to enter the amplitude value. The amplitude will be output at the end of "Output".
* 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.
Vpp≤2× (10-|offset|)
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