10
OPERATION AND MEASUREMENT
MQ series quantum meters are designed with a user-friendly interface allowing quick and easy measurements.
To power the meter, slide the included battery (CR2320) into the battery holder, after removing the battery door
from the meter’s back panel. The positive side (designated by a “+” sign) should be facing out from the meter circuit board.
Press the power button to activate the LCD display. After two minutes of non-activity the meter will revert to sleep
mode and the display will shut off to conserve battery life.
Press the mode button to access the main menu, where the appropriate calibration (sunlight or electric light) and
manual or automatic logging are selected, and where the meter can be reset.
Press the sample button to log a reading while taking manual measurements.
Press the up button to make selections in the main menu. This button is also used to view and scroll through the
logged measurements on the LCD display.
Press the down button to make selections in the main menu. This button is also used to view and scroll through the
logged measurements on the LCD display.
Calibration:
To choose between sunlight and electric light calibration, push the mode button once and use the up/down
buttons to make the appropriate selection (SUN or ELEC). Once the desired mode is blinking, press the mode button three
more times to exit the menu.
Logging:
To choose between manual or automatic logging, push the mode button twice and use the up/down buttons to
make the appropriate selection (SMPL or LOG). Once the desired mode is blinking, press the mode button two more times to
exit the menu. When in SMPL mode press the sample button to record up to 99 manual measurements (a counter in the
upper right hand corner of the LCD display indicates the total number of saved measurements). When in LOG mode the
meter will power on/off to make a measurement every 30 seconds. Every 30 minutes the meter will average the sixty 30
second measurements and record the averaged value to memory. The meter can store up to 99 averages and will start to
The LCD display consists of the total number of logged
measurements in the upper right hand corner, the real-time PPFD
value in the center, and the selected menu options along the
bottom.
