RIGOL
Chapter 2 Constant Voltage Tests
DP1308A Performance Verification Manual
2-8
B. Correct Connection
Figure 2-3 Peak-to-Peak Value Measurement Connection
2.
Turn on the AC source and set its voltage to the AC line voltage.
3.
Turn on DP1308A and press +6V, +25V or -25V at the front panel to select the
channel to be tested. Set the voltage of the channel to be tested to the rated
output value and the current to the maximum output value according to Table 2-4.
Press On/Off under the channel to be tested to enable power output.
4.
Set the time base, vertical scale and sampling mode of the oscilloscope to 5ms/div,
2mV and peak detect respectively. Set the oscilloscope to AC coupling mode with
1MΩ termination and turn on the 20MHz bandwidth limit. Enable the
peak-to-peak measurement function of the oscilloscope. The output status of the
power supply should be CV. Read and record the peak-to-peak value (Vpp)
measured by the oscilloscope.
5.
Disconnect the oscilloscope and connect the RMS voltmeter as shown in Figure
2-1. Note that the measurement wires of the voltmeter should be twisted
together to minimize the effect of the space radiation noise on the test. The
output status of the power supply should be CV. Read and record the Vrms
measured.
6.
Compare the measurement results with the specification in “Appendix B:
Specifications”.
7.
Repeat steps 1 to 6 to test the CV ripple and noise of the other two output
channels.
Power Supply under Test
Oscilloscope
Vertical Input
Twisted Wire
Break GND
Path
