User manual
Chapter 2 Basic Waveform Output RIGOL
DG4000 Series User’s Guide
2-5
To Set Amplitude
The amplitude range is limited by the “Resistance” and “Freq/Period” settings.
Please refer to “Output Characteristics” in Specifications. The default value is
5Vpp.
The amplitude displayed on the screen is the default value or the amplitude
previously set. When the instrument configuration (such as frequency) is changed,
if this amplitude is valid, the instrument will still use this amplitude; otherwise, the
instrument would display prompt message and set the amplitude to the amplitude
upper limit of the new configuration automatically. Users can also use “High Level”
or “Low Level” to set the amplitude.
Press Ampl/HiLevel to highlight “Ampl”, and then use the numeric keyboard or
direction keys and knob to input the amplitude value. Then, select the desired unit
from the pop-up menu.
For the input method of amplitude value, refer to the introduction in
Parameter Setting Method.
The amplitude units available are Vpp, mVpp, Vrms, mVrms and dBm (valid in
HighZ).
Press this softkey again to switch to high level setting. At this point, “HiLevel”
is highlighted.
The high level units available are V and mV.
Unit Switch
Vpp is the unit for signal peak-peak value and Vrms is the unit for signal
effective value. The default unit 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.
The relation of the two units is as shown in the figure below (take sine
waveform as an example).