RIGOL Chapter 3 Constant Current Tests
DP800 Performance Verification Manual
Preparations
When the power supply is in CC mode, the main parameters to be tested include CC
load regulation rate, CC linear regulation rate, CC ripple and noise and CC
programming and readback accuracy.
Before performing the tests, select the appropriate voltage via the “voltage selector”
at the rear panel of the power supply according to the AC line voltage of the country
(230V is taken as an example in all the tests in this manual). Under normal
temperature (about 25℃), make connections according to Figure 3-1 or Figure 3-2
using the devices recommended in “Recommended Test Devices” (for CC ripple
and noise test, please connect the desired devices according to Figure 2-1 or Figure
2-2). During the test process, please set the voltage of the AC power supply
according to the voltage selected of the “voltage selector” at the rear panel of the
power supply.
In CC tests (not including CC ripple and noise test), a current sampling resistor
should be connected between the power supply under test and the electronic load
serially to convert the current signal under test to voltage signal for the
measurement of related parameters.
Multimeter/
Oscilloscope/
RMS Voltmeter
DP800
Electronic Load/
Resistive Load
AC Power
Supply
+ -
-+
+ -
R
M
+
-
Figure 3-1 CC Test Connections
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