User`s guide

Chapter 12 Signal Source RIGOL
DS1000Z User’s Guide
12-19
the desired carrier waveform.
Note: “Pulse”, “DC” and “Noise” cannot be selected.
2. Set the carrier waveform parameters
After selecting the desired carrier waveform, set the carrier parameters (such as
the frequency and amplitude) by referring to the corresponding introductions
above.
3. Select the modulating waveform
Press Src1Mod to open the Source1 modulation setting menu. Press Shape to
select the desired modulating waveform (sine, square, ramp or noise).
4. Set the modulation frequency
Press Frequency to set the frequency of the modulating waveform. The range
is from 1 Hz to 50 kHz.
5. Set the modulation depth
Modulation depth is expressed as a percentage that denotes the amplitude
variation degree. Press Depth to set the modulation depth and the range
available id from 0% to 120%. In 0% modulation, the output amplitude is half of
the carrier waveform amplitude; in 100% modulation, the output amplitude is
equal to the carrier waveform amplitude; when the modulation is larger than
100%, the envelope distortion will be generated and the actual circuit must be
avoided. At this point, the output amplitude would not be exceed 5 Vpp (the
impedance is 50 Ω).