CH9720 Programmable DC Electronic Load Instructions Chapter III Menu Operation
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Hint: Enter the test page to start the measurement, the page displays the measurement
and judgment results of the current test step.
Hint:Enter the test results page,you can see the test data and judgment results for each step
3.2.8 LED Test Page
The CR-LED test mode can realistically simulate the characteristics of the LED lamp.
By increasing the on-voltage setting of the diode, the working principle of the diode is
completely simulated, so that the test voltage and current reach a normal stable value, and
the voltage in the conventional constant resistance mode is avoided. The current is unstable
or oscillating, which truly reflects the actual loading of the LED driver.
Parameter
Description
LED Vo
LED power supply voltage output
reference value
LED Io
LED rated output current
Rd Coeff
Rd coefficient, generally set to
0.1-0.3
After all the parameters are set, press the start button to start the test. The display interface
will display the voltage, current, resistance and power value of the current power supply
under test.
3.2.9 System Information Page