20000Lux—>200000Lux (or 20.00Fc—>200.0 Fc—>2000 Fc—>20000
Fc) in sequence; pressing the key for one second will result in the
inscription “MANU” disappearing from top left position of LCD display,
replaced by “AUTO” appearing on the top left position, to indicate that
the meter has switched the manual range switching mode to the auto
range switchover.
Press and hold the REL/PEAK key ⑧ of the MT-4617LED for a short
time, “REL” will appear on the top left position of the LCD interface,
indicating the activation of the relative value measurement mode. Press
and hold the key ⑧ for a short time again, the device will exit the
relative value measurement mode and return to the original
measurement mode, and “REL” on the top left position of the LCD
interface will disappear; pressing the key for one second will lead to the
peak measurement mode, “PEAK” and “MANU” will appear on top right
position of LCD display; press and hold the key for one second once
again, “PEAK” will disappear from the top right position of the LCD
interface, and “AUTO” will appear in the middle of LCD, and the mode
will return to auto measurement mode.
Press and hold max/min value inquiry key ⑤ for a short time, “MAX”
will appear on top position of LCD interface, switching the device to the
max/min value inquiry mode; in this mode, each short press of the key
causes the mode to change from MAX to MIN or from MIN to MAX;
press and hold the “MAX/MIN” key ⑤ for one second, “MAX/MIN” on
top position of the LCD interface will disappear, and the mode will exit.
Press and hold the data hold/zero calibration key ⑦ of the
MT-4617LED for a short time to enter the data hold mode, which will be
indicated by the apparition of “HOLD” on the top left position of the LCD
interface; press and hold the key for a short time once again, “HOLD”
will disappear from the top left position of the LCD interface, and the
device will exit the data hold mode.
