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7 Changing the fuse (OBL 155)
The fuse housing is on the rear of the microscope below the mains power supply
socket. With the device switched off and unplugged, you can pull out the housing.
When doing this, it is helpful to use a screwdriver or similar tool. The defective fuse
can be removed from its housing and be replaced with a new one.
After that, you just need to insert the fuse housing back into the insertion point below
the mains power supply socket.
8 Using optional accessories
8.1 Camera connection
OBL 155 / 156
Due to the trinocular tube, which is a standard fitting for the model OBL 155 / OBL 156,
it is possible to connect microscope cameras to the device, in order to digitally record
images or sequences of images of an object being observed.
After the plastic cover has been removed from the camera adapter connector on the
top of the microscope head, then a suitable adapter must be fitted.
In general there are two C-mount adapters available for this (1x and 0.47x
magnification, see Chapter 3 Features). After fitting one of these adapters it can be
fixed with the fixing screw. A camera which has a C-mount thread is then screwed on
top of the adapter.
We recommend that you first adjust the field of view using the eyepieces on the device
for the existing requirements, and then carry out the observation using the microscope
camera (i.e. using the PC screen which is connected).
The tube has a light distribution that guarantees the providing of light for the eyepieces
and the camera connection at the same time. This means that it is possible to
simultaneously observe by the eyepieces and PC screen.
For C-mount adapters, which have their own integrated magnification, the image which
is shown on the camera connected to the device can often have a different level of
focus compared with the image on the eyepiece.
In order to be able to bring both images into focus, the focus can be adjusted by those
adapters.
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