Maintenance - National 160 SERIES Instructions Manual

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Proceed with operation of camera according to manufacturers directions.
C. To mount a digital c-mount camera, optional accessory #930-005 video adaptor (d.) is required. This adaptor
has a 0.5x lens which assures image parfocality when viewed through a video monitor.
Observe that video adaptor has two black knurled rings. If your digital c-mount camera has a 1/2 inch chip,
leave both knurled rings in place, thereby creating a "CS" type mount. If your digital c-mount camera has a 1/3
inch chip, remove only the top black knurled ring from c-mount by turning counter-clockwise. The remaining
black knurled ring is a "C" type adaptor.
Remove front cap from the digital c-mount camera. Thread front of camera onto threads of video adaptor (d.).
digital c-mount camera.

MAINTENANCE

WARNING: FOR YOUR SAFETY, TURN SWITCH OFF AND REMOVE PLUG FROM POWER SOURCE OUTLET
BEFORE MAINTAINING YOUR MICROSCOPE. TO AVOID SHOCK OR FIRE HAZARD, IF POWER CORD IS
WORN, CUT OR DAMAGED IN ANY WAY, HAVE IT REPLACED AT ONCE.
A.
OPTICAL MAINTENANCE
1.
Do not attempt to disassemble any lens component. Consult an expert technical service company when
repairs not covered by these instructions are required.
2.
Prior to cleaning any lens surface, brush dust or dirt off lens surfaces using a camel hair brush. Or use
air to blow dust and lint off surfaces. Use of compressed air in a can, available at any computer supply
store, is a good source of clean air.
3.
Cleaning eyepiece lenses.
Do not remove eyepiece from eyepiece tube. Clean only the outer surface. Breath on lens to dampen
surface, then wipe with lens paper. Do not wipe lens surface while dry as lenses are scratched very
easily. Wipe a circular motion from center to outer edges.
4.
Cleaning objective lenses.
Do not remove objective lenses from microscope. Clean front lens element only. Using a cotton swab
saturated with distilled water, clean front lens surface. Inspect the lens using a magnifying glass to
insure that the element is clean. If immersion oil or specimen material of any kind is evident, use a
cotton swab dipped in a small amount of Windex to clean all foreign material from objective lens surface.
Such material will reduce, or totally block, image quality.
Locate knurled screw located on side of trinocular port (a.) on
microscope. Turn screw counter-clockwise to permit removal of black
plastic disk covering trinocular port.
Insert video adaptor tube into trinocular port. If adaptor does not
insert easily, further loosen knurled screw at side of port until
adaptor tube drops into port and is firmly seated. Retighten
knurled screw to secure adaptor and camera in place. Pull
(d.)
sliding rod (b.) until half way extended, to direct 100%
(a.)
microscope image to trinocular port. Proceed with operation of
(b.)
digital camera and computer/monitor according to
manufacturer's directions. With the live image on the monitor,
slowly rotate the knurled diopter on "C" adapter until image is in
focus on monitor. If microscope image does not remain in
focus when microscope magnification is changed, recheck
digital c-mount camera chip size. Perhaps it will be necessary to
either replace or remove the top "CS" adaptor ring in order for
the video adaptor to be compatible with the chip size of your
8

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