© PCE Instruments
6
6.8
Relative value
The relative value is the difference in value between the current light value and the saved
reference light value.
To save a reading as a reference light value, press the REL key when the desired reference value
is displayed on the LCD. The value displayed thereafter will be the relative value of that saved
value.
For example: with the saved reference value 80 lux, if the current light value is 100 lux, the meter
will display 20 lux. To retrieve the reference value, press the REL key again. The value will be
displayed and the REL icon will flash on the LCD.
To exit REL mode, press and hold the REL key for approximately 2 seconds until the REL icon
on the LCD disappears.
6.9
Backlight
If no key is pressed for 60 seconds in APO (auto power off) mode or recording mode, the backlight
will automatically dim to save battery power. Press any key to increase the brightness again. In
non-APO mode, the backlight is always very bright.
6.10
Recording mode (PCE-LMD 10 only)
The lux meter has a data logging function. Before starting the recording function, connect the light
meter to the PC via Micro-USB and set up the parameters via the Smart Logger software. Set the
start mode to "by key" and disconnect the light meter from the PC after setup. Press the REC key
on the lux meter to start recording. The REC icon will start flashing and will be displayed on the
LCD.
Do not turn off the meter during recording mode. When the set number of data is reached, the lux
meter will be turned off automatically. When the memory is full, the FULL icon appears at the
bottom of the LCD. When enough data have been deleted, the FULL icon disappears.
Notice
:
If the lux meter is turned off during recording, connect it to the PC and set up the parameters
again after turning it on before starting recording again. Otherwise, the ERR icon will be displayed
on the LCD when you press the REC key for recording.
6.11
Auto Power Off
The APO function is set to ON by default. To turn off the APO function, press the
key lightly.
To extend the battery life, the lux meter will automatically turn off after about 10 minutes when not
in use.
In record mode or when the meter is connected via USB, the APO function is automatically
disabled until the memory is full or the set number of records is reached.
