Instructions

RIGOL Chapter 2 Performance Verification Test
DG2000 Performance Verification Guide
2-12
Harmonic Distortion Test
Specification
Sine Wave Spectrum Purity
Harmonic Distortion
Typical
[1]
DC to 10 MHz (included): <-55 dBc
10 MHz to 20 MHz (included): <-50 dBc
20 MHz to 40 MHz (included): <-40 dBc
>40 MHz: <-35 dBc
Note
[1]
: 0 dBm output, DC offset 0, impedance 50 Ω.
Test Procedures
1. Make sure that the environment temperature is between 18℃ and 28℃ and
DG2000 has been warmed up for at least 30 minutes. Connect the channel
output terminal (take CH1 as an example; the test method is also applicable to
CH2) of DG2000 with the signal input terminal of the spectrum analyzer using a
dual-BNC connecting cable and N-BNC adaptor as shown in Figure 2-4.
DG2000 Series Spectrum Analyzer
Figure 2-4 Connect DG2000 and the Spectrum Analyzer
2. Turn on DG2000. When the Shift key is illuminated, press Sine/Preset and
tap the Def icon, then a dialog box is displayed, tap "Apply" to restore DG2000
to the factory setting.
3. Set DG2000:
a) Set the output impedance of CH1 to 50Ω. (Tap the channel output
configuration status bar
under the user interface to enter the
channel setting interface. Tap the OutputSet  HighZ to select "Off". Tap
the Impedance menu label, and set the impedance to 50Ω.)
b) Set the output waveform of CH1 to a sine waveform with 10MHz frequency,
0dBm amplitude and 0V
dc
offset.
c) Press Output1 or tap the channel output configuration status bar
to turn on the output of CH1 in the channel setting interface.
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