10
EN
3.
CONTROL
3.1 Measurement of light level
In order for the
clock to be sufficiently exposed to light by choosing the right location, it is possible
to measure the light perceived by the clock.
This measurement can be done during commissioning or if the clock is already
running.
Todo so:
1- Pre-position the clock (position/orientation) to the desired location, making sure that it is free
from obstacles between the clock and light sources.
2- Brie
fly
press the INIT button.
3- The clock set the hands at noon and then measures the perceived light.
4- The clock then displays the perceived light level via the minute hand for 5 seconds, before
resetting the hands at noon.
Refer to the image and table below to interpret the light level display and establish the minimum
light exposure time required for the clock.
Reminder: in order for the clock to keep running continuously, it has to be exposed
to 150 lux for 10 hours, 5 days a week.
The minimum operating and charging level is 100 lux.
≥1100 Lux
1000 Lux
900 Lux
800 Lux
700 Lux
600 Lux
500 Lux
400 Lux
300 Lux
200 Lux
100 Lux
Indicated value
Minimum
Exposure time
<
100
lux
Very low exposure
from
100
lux
24
h/24
from
150
lux
10
h/24
from
200
lux
4
h/24
Measurement accuracy: +/- 10 lux.
In the following example, the clock measures
and displays an ambient light of 250 lux.
Following the interpretation of the light level perceived by the clock, choosing another
location with better light exposure may be necessary.
5- The clock seeks DHF synchronisation once again with a transmitter in INIT mode (during
commissioning), or it will set the time if it is already paired.
