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SIGLENT
SDS2000X User Manual 191
Turn On/ Off
The turn on analysis measures the delay from when the power supply is turned on to
when its output reaches 90% of its steady state.
The turn off analysis measures the delay from when the power supply is turned off to
when its output falls to 10% of its steady state.
1. Press the Utility button on the front panel to enter the UTILITY function menu.
2. Press the Next Page softkey to enter the second page of the UTILITY function menu.
3. Press the Power Analyze softkey to enter the ANALYSIS function menu.
4. Press the Analysis softkey, and then turn the universal knob to select Turn On/Off
and press down the knob to confirm.
Figure 125: Turn On/Off ANALYSIS Function Menu
5. Connect the probes to the device-under-test and to the oscilloscope as well.
a. Select the proper attenuation ratio for the probes.
b. Connect D+ of the voltage probe to the live wire of the AC input.
c. Connect D- of the voltage probe to the neutral wire of the AC input.
d. Connect the output voltage probe (passive or differential) to the DC output of the
power supply.
e. Connect the voltage probes to the desired oscilloscope channels.
6. Press the Signal softkey to enter the SIGNAL menu.
Figure 126: Turn On/Off SIGNAL Menu
7. Press the Voltage and Current softkeys and then turn the universal knob to select the
channels.
8. Make sure the proper probe attenuation factors are set in the oscilloscope for the
voltage and current probes.
9. Press the Duration softkey, and then turn the universal knob to set the time duration
to capture signals. This sets the time/div of the oscilloscope.
10. Press the Max Vin softkey, and then turn the universal knob to specify the maximum
input voltage.
Enter the maximum (peak to peak) source voltage amplitude. The source voltage will
be used to trigger the oscilloscope in “Turn On Time” test.
This value is used to adjust the vertical scale of the channel probing the oscilloscope
input voltage.
11. Press the Steady Vout softkey, and then turn the universal knob to specify the
expected steady state output DC voltage of the power supply.
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