User`s guide

Chapter 2 Front Panel Operations RIGOL
DSG3000 User’s Guide 2-5
Amplitude Offset
Set the amplitude offset relative to the RF output amplitude.
If the external device or circuit has a fixed attenuation or gain, you can set and read
the amplitude value after through the external device or circuit on the RF source by
setting the amplitude offset.
Press LEVEL  Offset, use the numeric keyboard to input the amplitude offset
value and press dB or the unit key.
 The amplitude offset unit available is dB.
 Press Enter to select the default unit (dB).
 You can also press the left/right direction keys to enter the parameter editing
state and move the cursor to the specified digit and then use the up/down
direction keys or knob to modify the value.
 You can also use the up/down direction keys or knob to modify the amplitude
offset at the current step.
 Press LEVEL  Offset and then press Step to set the step.
Explanation
1. When amplitude offset is 0 Hz, the amplitude displayed in the interface
(namely setting amplitude) is equal to the actual output amplitude.
2. When amplitude offset is not 0 Hz, output amplitude is determined by setting
amplitude and amplitude offset. The three parameters satisfy the equation:
setting amplitude (display amplitude) = output amplitude + amplitude offset
3. The deviation (namely the actual output amplitude
) between interface display
amplitude and amplitude offset cannot exceed the amplitude range of
instrument.
4. The current amplitude range of instrument is determined by amplitude limit,
attenuation mode, attenuation value and RF output frequency.