Rigol DP1308A

Chapter 2 Constant Voltage Tests RIGOL
DP1308A Performance Verification Manual
2-13
4. Measure the CV programming accuracy and readback accuracy under rated
output voltage.
1) Turn on DP1308A. Execute the following operations via the remote interface
(USB, LAN or GPIB):
Send command to select the channel to be tested and set its voltage and
current (according to the Table 2-7):
APPLy P6V,6,5.25 (for +6V/5A channel)
APPLy P25V,25,1.05 (for +25V/1A channel)
APPLy N25V,-25,1.05 (for -25V/1A channel)
Send the OUTPut:STATe {P6V|P25V|N25V},ON command to enable
the output of the channel to be tested.
2) The output status of the power supply should be CV. Read and record the
measurement value U
3
on the multimeter.
3) Send the MEASure:VOLTage? {P6V|P25V|N25V} command via the
remote interface (USB, LAN or GPIB) to read and record the voltage U
4
.
4) Calculate the programming accuracy: |U
3
-rated output voltage of the
channel under test|;
Calculate the readback accuracy: |U
4
-rated output voltage of the channel
under test|.
5) Compare the measurement results with the specifications in “Appendix B:
Specifications”.
Table 2-7 Setting and specification of CV programming and readback accuracy test
(rated output voltage)
Channel +6V/5A +25V/1A -25V/1A
Voltage (V) 6 25 -25
Current (A) 5.25 1.05 1.05
Specification
Programming: 0.5mV
Readback: 0.5mV
Programming: 1.5mV
Readback: 1.5mV
5. Repeat Steps 1 to 4 to test the CV programming and feedback accuracy of the
other two output channels.