Sutter Instrument Lambda DG-4, Operation Manual

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LAMBDA DG-4 & DG-5 OPERATION MANUAL – REV.
3.05C
(
20150414
)
13
3. OPERATIONS
Although the Lambda DG-4/5 is simple to use, proper operation depends on the user
understanding the design and characteristics of this instrument. This section provides the
detailed information needed to begin operation and to control the unit from its keypad.
3.1 Control Electronics
The control electronics for the filter changer are activated by the “MAIN” power switch on
the rear of the unit. You may operate the control electronics without the lamp on, but it is
best to turn the control electronics off before the lamp is started. Once the lamp has been
started (and is ignited), the control electronics may be turned on again.
3.2 Preparation and Precautions
It is assumed that you have now completed attachment of your lamp to a microscope using
some combination of filter wheels and a liquid light guide. It is not recommended that you
power up the lamp until a solid, leak-free, light path has been established between the lamp
cabinet and the microscope. The intensity and wavelengths of the light that can be produced
by the Lambda DG-4/5 are such that it should not be turned on unless the light is directed
into a microscope and away from the eyes or skin of the operator or other nearby personnel.
To reiterate:
Due to the current draw during lamp ignition, it is important to power up the Lambda DG-
4/5 first before other electronic and computer equipment, especially when they are powered
from or grounded to the same circuit. Failure to do so may reset microprocessor-based
equipment and/or may destroy sensitive operational amplifier-based instrumentation.
3.3 Power-Up Sequence
There are two switches on the back of the Lambda DG-4/5 labeled LAMP and MAIN. The
LAMP switch will ignite and power the xenon lamp. The MAIN switch applies power to the
controller and the fan that cools all of the electronics (including the xenon lamp power
supply). The MAIN switch should be turned on immediately after the LAMP switch is turned
on and the lamp is ignited. If you are only configuring the Lambda DG-4/5 controller or a
WARNING: DO NOT LOOK DIRECTLY INTO THE
LIGHT GUIDE! The output of the light or the light guide should be
directed into the microscope using the appropriate adapters, directed
away from anyone’s eyes, and not directed toward any reflective
surface.