Chapter 2 Performance Verification Test RIGOL
DG800 Performance Verification Guide
Harmonic Distortion Test
Specification
Sine Wave Spectrum Purity
Harmonic Distortion
DC to 10 MHz (included): <-55 dBc
10 MHz to 20 MHz (included): <-50 dBc
20 MHz to 35 MHz (included): <-40 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
DG800 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
DG800 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.
DG800 Series Spectrum Analyzer
Figure 2-4 Connect DG800 and the Spectrum Analyzer
2. Turn on DG800. Press Preset and tap the Def icon, then a dialog box is
displayed, tap "Apply" to restore DG800 to the factory setting.
3. Set DG800:
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.
4. Turn on and set the spectrum analyzer:
a) Set the reference level to 10dBm and input attenuation to 20dB.
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