Remove the individual system components from their packaging and place them
onto a horizontal surface.
To obtain optimal functionality, the LED illumination system must be positioned
correctly.
Observe the following criteria:
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No high atmospheric humidity (cf. Technical data)
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No high room temperature (cf. Technical data)
The device may only be operated at the rated mains voltage. Only con-
nect the unit to grounded sockets.
Keep air vents free!
The control unit must only be operated with the power-supply provided!
Connect one end of the power-supply to the control unit (3) (24 V DC input) by
means of the hollow plug connector (9) and the other end to the power mains
(100–240 V AC, 50–60 Hz) by means of the mains cable (8). If necessary, use the
ESD connector (10) for potential equalisation.
Plug the LED lighting into the control unit. Only use Port A of the
control unit for the LED ringlight 66/40 (and all future products with 40
LEDs). LED spot, backlight and ringlight 38/20 can be used on Port A and/or B.
The following possibilities are available with the two Ports A and B (4) of the
control unit:
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1 LED ringlight 66/40 on Port A
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1 or 2 LED spots or LED backlights or LED ringlights 38/20 on Port A and B
The LED ringlight can now be mounted directly onto the objective of all micro-
scopes with 66 mm diameter by means of a clamping ring which does not
damage the surface of the objective. For objectives with any other diameter
there is a wide range of adapters available.
For mounting the LED spot, “goosenecks” (6) of different lengths and threads
are available, allowing the LED spot to be pointed in any desired direction.
The one end (with the O-ring) of the gooseneck is inserted into the opening of
the LED spot. The other end can be screwed directly onto the microscope or
optionally into a base plate.
The LED illumination unit can be switched on and off (Position I: On; Position 0:
Off) using the switch located on the control unit (1).
The potentiometer wheel (2) is used to control the brightness, with the cur-
rent being adjustable from 3 mA to 30 mA. Please note that the current level
influences not only the brightness, but also the service life of the LEDs.
The approximate potentiometer wheel setting can be read from the scale on the
wheel.
Minimum (3 mA)
10 mA
20 mA
Maximum (30 mA)
View of standard control unit
View of control unit with segment control
The following segments can also be selected with the on/off switch:
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Semicircle
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Quarter circle
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2 opposing quarter circles
This segment selection can be rotated using (13).
Do not open the unit or its individual components.
Lifetime
LED chips have a typical lifetime of about 100.000 hours. The actual service
life depends to a great extent upon the ambient temperature and the operating
current of the LEDs. A higher operating current produces not only more light but
also more heat, which reduces the life span of the LEDs.
As a rule, the brightness of LEDs also decreases over the life cycle. After about
7000 hours at the highest possible luminance – i.e. at the potentiometer wheel
“turbo” setting – the brightness will drop by 50 %. On the other hand, the same
value will be reached in the 10 mA position only after 20,000 hours service. This
figure increases substantially with a setting below 10 mA.
To increase the lifetime of the LEDs, the brightness should be adjusted to the
actual level required at any point in time.
Faulty LEDs can be replaced. Contact your dealer or the manufacturer with
respect to this matter.
INSTALLATION AND CONNECTION
OPERATION
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