RIGOL
Chapter 3 Constant Current Test
DP1116A Performance Verification Manual
3-2
Preparations
When the power supply is in CC mode, the main parameters to be tested include CC
load regulation rate, CC linear regulation rate, ripple and noise, programming
accuracy and readback accuracy.
Under normal temperature (about
25℃
), make connections according to the figure
below using the devices recommended in “Recommended Test Devices”. Before
performing the tests, press Sense to enable the Sense mode. Note that a current
sampling resistor (R
M
=0.01 Ω) 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.
DP1116A
+
-
Electronic Load/
Resistive Load
+
-
AC Power
Supply
Multimeter/
Oscilloscope/
RMS Voltmeter
+
-
+
-
+
-
+
-
S+ + - S-
R
M
Figure 3-1 Test Connections (CC)
Note:
The R
M
in the figure above is a 0.01 Ω 4-wire current sampling resistor. As shown in
Figure 3-2, C represents the current measurement terminal and S represents the
voltage measurement terminal. During the test, please make correct connections.
Short-circuit
Devices
