SCHOTT KL 2500 LCD Conseils D'utilisation page 16

2 Operation
2.1 Light guide connection
First open the light guide socket (2) by
turning the outer black ring in a coun-
ter-clockwise direction. To connect
light guides with an 18 mm sleeve dia-
meter, remove the socket adapter. Push
the light guide in as far as the stop and
close the light guide socket.
Caution:
When inserting light guides with a
location pin, care must be taken to
ensure that the latter fits into one of
the four clamping clip slots.
The socket adapter becomes hot
during operation. Please ensure that it
has cooled down before removal.
To remove the adapter, first of all com-
pletely unscrew the black ring. Then
slightly press the adapter together at
the positions marked
Insertion of the adapter takes place in
the reverse sequence.
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2.2 Start-up procedure
Switch on/off by operating the mains
switch (1).
Position
The instrument is switched off.
Position I :
The instrument is switched on.
To protect the halogen lamp the
KL 2500 LCD is fitted with a gentle
start-up device that reduces the
high switch-on current that would
otherwise occur. In addition, electronic
stabilisation of the lamp voltage
ensures stable light power regardless
of fluctuations in the mains voltage.
2.3 Light intensity setting
The KL 2500 LCD is fitted with two
independent alternative means to
adjust the light intensity.
and remove it.
The stepless electronic adjustment
enables you to optimise the lamp
lifetime - by precisely setting the
brightness you require, you will
achieve the longest halogen lamp
lifetime that is possible for your
application. This also varies the color
temperature of the emitted light.
The mechanical adjustment enables
stepless variation of the light intensity
at a constant color temperature.
:
2.3.1 Electronic adjustment
The brightness can be adjusted step-
lessly by turning the light intensity set-
ting knob (3).
There are four distinct notched posi-
tions between the two end positions
of the adjusting knob. These fixed posi-
tions, thus ensure the reproducibility of
pre-selected brightness settings.
Position 1 gives the lowest light inten-
sity, and maximum brightness is at-
tained in position 6. The two barriers
at positions 4 and 5 are bypassed by
pressing in the adjustment knob.
The adjustment knob cannot be tur-
ned beyond the end stops 1 and 6
respectively.
The lamp lifetime in position 4 is about
1500 hours and in position 5 it is
about 150 hours.
In position 6 the halogen lamp is
operated at its nominal voltage and
the lamp will achieve approximately
the rated lifetime stated by the lamp
manufacturer (depends upon
the type).