Rigol DHO1000 Series Manual page 32

Performance Verification Test
a. Press the front-panel
settings.
b. To enable CH1, perform any of the following operations:
- Click or tap the channel status label at the bottom of the screen to enable
- Press the front-panel
- In the Vertical menu, select the CH1 tab. Select ON for the Display item to
c. Click or tap the channel status label of CH1 at the bottom of the screen. Then
the Vertical menu is displayed. Click or tap Probe to enter the Probe setting
menu. Set the probe attenuation ratio to "1X".
d. Set the vertical scale to 200 mV/div.
e. Set the vertical offset to 0 V. Then close the Vertical menu.
f. Click or tap the horizontal label at the top of the screen. Then the Horizontal
menu is displayed. In this menu, you can set the horizontal time base to 1 ns/
div.
g. Set the horizontal position to 1 ms. Close the Horizontal menu.
h. Click or tap the trigger label at the top of the screen. Set the trigger level to 0 V.
4. Click or tap
section of the screen. Click or tap the "Result" sidebar and select Setting in the
pop-up window. In the Mode item, select Manual to enable the manual cursor
measurement function. Then measure the offset (ΔT) of the middle point of the
signal (namely the crossing point of the rising edge of the current signal and the
trigger level line) relative to the screen center and record the measurement result.
5. Calculate the time base accuracy, namely the ratio of ΔT to the horizontal position
of the oscilloscope. For example, if the offset measured is 1 ns, then the time base
accuracy is 1 ns/1 ms = 1 ppm.
6. Calculate the time base accuracy limit by using the following formula: ±(5 ppm + 1
ppm/year x Number of Years that the Instrument Has Been Used).
DHO1000 Performance Verification
26
CH1.
turn CH1 on.
> Cursor. Then the "Result" sidebar is displayed at the right
key to restore the oscilloscope to the default
key to enable the channel.
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