Hantek HDG2000B Series, Руководство пользователя

Страница: 22 / 100

User Manual 16
instrument will still use this frequency; otherwise, the instrument would display prompt message
and set the frequency to the frequency upper limit of the new function automatically.
2.2.3 Set the Amplitude
Press Amplitude/High Level softkey to highlight "Amplitude". At this point, use the numeric
keyboard to input the amplitude value and select the desired unit from the pop-up unit menu or
use the direction keys and knob to modify the current value.
1. For the input method of amplitude value, refer to the introduction in " Parameter Setting
Method ".
2. The amplitude units available are Vpp, mVpp, and Vrms, dBm
（ 50Ω impedance ）
.
3. Press this softkey again to switch to high level setting. At this point, "High Level" is highlighted.
4. The high level units available are V and mV.
The amplitude range is limited by "Freq/Period" settings. Please refer to "Output Characteristics"
in " Specifications ". The default value is 200mVpp.
Tips:
Switch between Vpp and Vrms
Vpp is the unit for the signal peak-peak value and Vrms is the unit for the signal effective value.
The default unit of the instrument is Vpp. Users can quickly switch the current amplitude unit from
the front panel.
For different waveforms, the relations between Vpp and Vrms are different. Take sine waveform
as an example; the relation of the two units is as shown in the figure below.
According to the figure above, the conversion relation between Vpp and Vrms fulfills the following
equation.
For example, convert 2Vpp to the corresponding value in Vrms.
For sine waveform, press in the numeric keyboard to enter 0.707 and select the Vrms menu.
2.2.4 Set the DC Offset Voltage
Press Offset/Low Level softkey to highlight "Offset". At this point, use the numeric keyboard to
input the offset value and select the desired unit from the pop-up unit menu or use the direction
keys and knob to modify the current value.