"Operation button" icon description:
(
) Left button: swipe left, left button to record/up select:
(
) Right key: Swipe to the right, right key to record/down select:
(
) Confirm: Short press to return or switch sample/standard sample, long press to confirm.
2. Operating instructions
2.1 Battery instructions
This instrument uses a built-in lithium battery, the specification of the lithium battery is Li-ion
3.7V, and the capacity is 800mAh. Use a USB data cable to connect to the USB port on the
PC or connect to a 5V==1A power adapter to charge the lithium battery. The maximum
charging current can reach 500MA. When charging, the battery level is greater than 80%, the
LED indicator is green, the battery level is less than 20%, the LED indicator is red, and the
battery level is between 20% and 80% is yellow. The display shows a charging prompt, and
the charging is complete, indicating that the battery is full.
2.2 Switch on and off
Power on: In the power off state, press the power switch, the instrument is powered on, the
LED indicator flashes, the display screen lights up and enters the measurement interface.
Shutdown: In the power-on state, long press the power switch to shut down the instrument.
When the automatic sleep mode is turned on, the instrument will automatically shut down.
Note: When not using the instrument for a long time, please turn off the power.
2.3 Black and white calibration
In the measurement interface, long press the "operation button" to enter the system function
interface, slide the "operation button" to the left or right, position the cursor on the "black and
white calibration", and long press the "operation button" to enter the calibration interface. The
instrument has built-in calibration parameters, and calibration is needed when the
environment changes drastically.
Black calibration: "black calibration" the instrument against the air, the surrounding must be a
darker environment without bright light source, and there is no obstruction within 1 meter of
the instrument against the air. Short press the "measurement button" to perform black
calibration, and the calibration success prompts "pass". After the black calibration is
completed, the white calibration interface is automatically entered.
White calibration: align the measurement aperture with the calibration cover. The calibration
cover adopts a spring-type pressing structure, gently press the instrument to make the
measurement aperture fit the whiteboard closely, short press the "measurement button" for
white calibration, the calibration is successful, and the prompt "pass". After the white
calibration is completed, the measurement interface is automatically entered.
2.4 Mobile APP installation and measurement