Instructions

RIGOL Chapter 2 Performance Verification Test
DG2000 Performance Verification Guide
2-8
AC Flatness Test
Specification
Output Characteristic
Flatness
Typical (Sine, 1 Vpp)
≤5 MHz: ±0.1 dB
≤15 MHz: ±0.2 dB
≤25 MHz: ±0.3 dB
≤40MHz: ±0.5 dB
>40 MHz: ±1 dB
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 50Ω load to
the channel output terminal (take CH1 as an example; the test method is also
applicable to CH2) of DG2000; connect the 50Ω load and the voltage input
terminals of the digital multimeter using a BNC-Dual banana plug connecting
cable as shown in Figure 2-2.
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 1kHz frequency
and 1Vpp amplitude.
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 the multimeter and select the ACV measurement function. Turn on the
dBm operation function and set the reference resistance to 50Ω. Read the
measurement value and take it as the reference power (P
ref
).
Tip:
In this step, if the dBm operation function is not turned on, you can also
calculate the reference power using the formula
]1
/)/[(10
ref
2
reading10
mWRVLogdBm ×=
according to the measurement value of