Rigol DP1116A, Руководство по проверке работоспособности, Страница: 22 / 49

RIGOL Chapter 2 Constant Voltage Test
2-6 DP1116A Performance Verification Manual
CV Linear Regulation Rate (CV Source effect)
CV linear regulation rate refers to the variation of output volatage when the input
power changes while the power supply is in CV mode. In the following section, the
specifications at 16V/10A scale and 32V/5A scale are tested.
Specification:
Linear Regulation Rate, ±(Output PerOffset)
Voltage
< 0.01% + 2 mV
Test Procedures:
1. Turn off DP1116A. Connect DP1116A, AC power supply, electronic load and
multimeter according to Figure 2-1. Set the voltage selector (100, 115, 220 or
230) at the rear panel of the power supply according to your need and make
sure that the fuse currently installed matches the input voltage. As the voltage
test methods of the four specifications are the same, 220 is taken as an example
for illustration.
2. Turn on the AC power supply and set its voltage to 220 V.
Note: the value set in this step should be accordance with the value selected by
the voltage selector in the rear panel of DP1116A.
3.
Turn on DP1116A. Press 16V/10A at the front panel to set the scale to be
tested to 16V/10A. Set the voltage and current of the scale to be tested
according to Table 2-2. Press On/Off to enable the output of the power supply.
4. Turn on the electronic load. Adjust the electronic load to make the load current
equal the rated output current of the scale under test.
5. Turn on the digital multimeter and select DC voltage measurement function.
Make sure that the power supply is in CV mode. Read and record the current
reading (U
0
) of the multimeter.
6. Adjust the AC power supply to undervoltage state (namely the amplitude
reduces by 10%, refer to Table 2-2); read and record the current reading (U
1
) of
the multimeter. Adjust the AC power supply to overvoltage state (namely the
amplitude increases by 10%, refer to Table 2-2); read and record the current
reading (U
2
) of the multimeter.
7. Calculate the voltage variations (|U
1
- U
0
| and |U
2
- U
0
|) and compare them with
the specification.