Chapter 2 Performance Verification Test
RIGOL
DG1000Z Performance Verification Guide
2-7
DC Offset Accuracy Test
Specification:
Output Characteristic
Offset (into 50Ω)
Accuracy
±(1% of setting value + 5mV + 0.5% of amplitude)
Test Procedures:
1.
Make sure that the environment temperature is between 18
℃
and 28
℃
and
DG1000Z 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 DG1000Z; 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 the multimeter, select the DCV measurement function and set the range
to “20V”.
3.
Turn on DG1000Z. Press Utility
Set To Default
OK to restore DG1000Z
to the factory setting.
4.
Set DG1000Z:
a)
Set the output impedance of CH1 to 50Ω (press Utility
Channel Set
Output Set
Imped and select “Load”).
b)
Set the output waveform of CH1 to a sine waveform with 1kHz frequency,
5Vpp amplitude and 0V
DC
offset.
c)
Press Output1 to turn on the output of CH1.
5.
Record the reading of the multimeter and judge whether it is within the
specification (“Offset” in Table 2-2) range.
6.
Keep the output impedance of CH1 of DG1000Z at 50Ω and the output
waveform of CH1 as a sine waveform with 1kHz frequency and 5Vpp amplitude.
Set the offset of the output waveform of CH1 to -2.5V
DC
, -1V
DC
, -500mV
DC
,
500mV
DC
, 1V
DC
and 2.5V
DC
respectively. Record the readings of the multimeter
