RIGOL Chapter 3 Constant Current Tests
DP800 Performance Verification Manual
and record the RMS value (Vrms) measured by the RMS voltmeter.
Note: The measurement wires of the RMS voltmeter should be twisted together
to minimize the effect of the space radiation noise on the test as much as
possible.
5. Calculate the CC ripple and noise (Vrms/R
L
) and compare it with the specified
specification in Table 3-11.
6. Press the On/Off key corresponding to the channel under test at the front
channel to disable the output of the channel under test.
7. Repeat steps 1 to 6 to test the CC ripple and noise (normal mode) of CH2 and
CH3 until finishing the CC ripple and noise tests of all channels.
During the CC ripple and noise test, please pay attention to shield the effect of
the environmental space radiation noise on the test effectively.
For the single channel model with multiple ranges of DP800 series (DP811A),
please first select a range and set the corresponding parameters of this range
in step 3 and then perform step 4 to step 6 to test the CC ripple and noise of
this range. Then, repeat step 3 to step 6 to test the CC ripple and noise of the
other range.
For the channels that support the Sense function of DP800 series, please
connect DP800, AC power supply, resistive load and RMS voltmeter according
to Figure 2-2
and
turn on the Sense function of the channel after selecting the
current channel in step 3.
Test Record Forms:
Table 3-11 DP831A CC Ripple and Noise Test Record Form
Channel CH1 (8V/5A) CH2 (30V/2A) CH3 (-30V/2A)
Specification <2mArms
Resistive Load R
1.6Ω 15Ω 15Ω
DP831A
Setting
Voltage 8.4V 32V -32V
Current 5A 2A 2A
Measurement
Result
Vrms/R