How to adjust the accuracy?
(1)Output voltage calibration steps
Input voltage range: 4-40VDC
Output voltage range: 1.25-37VDC adjustable
Output current: 2A
voltmeter range: 0 to 40V, error ±0.1V
Input reverse polarity protection
Built in output short protection function
Built in thermal shutdown function
L x W x H =61 x 34 x 12 mm
LED digital voltmeter tube, the accuracy is adjustable, can be aimed at your multimeter adjustable accurate.
the right key to let the display show the input or output voltage. when
the right “OUT” led light, it shows output, the left “IN” led show
1, adjust the right button so that "OUT" LED lighted, the voltmeter
shows the value of output voltage; Press the right button for more than 2
seconds, release, voltmeter and "OUT" LED flashes in synchronization so
that youenter the output voltage calibration mode.
Step 2,press the
right button (normal speed), the voltage value is adding up a unit;
Press the left button, minus a unit; Due to a unit is less than 0.1V,
the minimum voltage display to 0.1V, so you need to continuously press
1-5 times to see the voltmeter change 0.1V, how many times voltmeter
change 0.1V by pressing the key, depending on the current display
voltage, the higher the voltage, the fewer the number of press.
3,press the right button for more than 2 seconds, release, to exit the
output voltage calibration mode. All parameters set to automatically
power down to save.
(2)Input voltage calibration steps
1, adjust the right button so that "IN" LED lighted, the voltmeter
shows the value of input voltage; press the right button for more than 2
seconds, release, voltmeter and "IN" LED flashes in synchronization so
that you enter the input voltage calibration mode.
Steps 2 and 3, consistent with the output voltage calibration method.
customers report: "The module can not be adjusted, the output voltage
is always equal to the input voltage." When you encounter this problem,
please counterclockwise rotation of the potentiometer 10 laps or more,
then you can adjust the output voltage. Because the factory default
output voltage is 20V.