Noise Floor,Typical (2 GSa/s Sample Rate, 1 Mpts Memory Depth, 20 μs Time
Base)
1 V/div
4.3 mV
rms
5 mV
rms
7.9 mV
rms
2 V/div
6 mV
rms
7 mV
rms
13 mV
rms
5 V/div
30 mV
rms
34.5 mV
rms
49 mV
rms
10 V/div
36 mV
rms
44 mV
rms
74 mV
rms
5.1.2 Test Procedures
TIP
Before test, disconnect the instrument from all the signal generators and keep the noise
sources away from the instrument.
1. Press the front-panel key to restore the oscilloscope to the default
settings.
2. Set the vertical scale to 500 μV/div to enable the 20 MHz bandwidth limit.
3. By default, the acquisition mode is "Normal", the sample rate is 2 GSa/s, the
horizontal time base is 20 μs, and the memory depth is 1 Mpts.
4. Click or tap the trigger label at the top of the screen. Set the trigger source to CH1.
5. In the
Measure menu, click or tap Vertical measurement item to select "AC.RMS".
The AC.RMS measurement result is displayed at the right section of the screen.
6. Click or tap the "Result" sidebar and then select Setting. Set Count to 100.
7. When the statistics count in the "Result" sidebar shows 100, read and record the
AC.RMS value.
8. For the parameter setting, refer to
Test Record From
. Repeat Step 1-7 and test the
AC.RMS value for different vertical scales, bandwidths. The test results should be
less than the max. value in the record form.
5.1.3 Test Record From
Vertical
Scale
Bandwidth
Test
Result
Maximum
Pass/
Fail
DHO1072/
DHO1074
DHO1102/
DHO1104
DHO1204/
DHO1202
500 μV/div Full BW
62 μV
rms
66 μV
rms
75 μV
rms
1 mV/div Full BW
64 μV
rms
68 μV
rms
77 μV
rms
2 mV/div Full BW
68 μV
rms
76 μV
rms
77 μV
rms
5 mV/div Full BW
74 μV
rms
82 μV
rms
95 μV
rms
Performance Verification Test
DHO1000 Performance Verification
12
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