Ken A Vision T-1901 Instruction Manual

Also see for Comprehensive Scope T-1901: Catalog Instruction manual

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Ken A Vision T-1901 Instruction Manual Manual pdf 2 page image

OperationBuilt-In IlluminatorTurn off the power switch before connecting the power cord located at therear of the microscope. An in-base illuminator is built into the base of the micro-scope and cannot be removed. Bulb replacement can be done from the under-neath side. See Bulb Replacement instructions. The built-in 20 watt bayonetincandescent bulb or 5 watt fluorescent provides all the light needed for illumi-nation. Do Not Use Any Other Bulb As It Will Damage The Unit.EyepieceThe widefield eyepiece is locked in to place to avoid loss of eyepiece. Theeyepointer is built-in to the eyepiece.(T-1902) The dual viewing head allows two people to look at the same specimenat the same time or connect a camera to one eyepiece for group presentation.One of the dual viewing eyepieces has a diopter on the tube for focusing. Thisallows focusing for each person’s individual eye correction.(T-1903) The binocular eyepiece has a diopter on both eyetubes for focusing.Interpupiliary Adjustment (included on model T-1903) When using the binocularmicroscope there is an adjustment for the distance between the viewer’s eyescalled interpupiliary adjustment. The eyepiece lenses will spread apart or getcloser together to fit each individual. Place one hand on each side of the binocularhead next to the eyepieces and push in and out until the distance between theeyes is comfortably positioned. You will see one image.FocusPlace a specimen slide under the stage clips or in mechanical stage andmove into position for viewing. Use the 4x objective first. Raise the stage until itwill go no higher. Then lower the stage to bring into focus. Use the fine focusknob to achieve optimum resolution. Once the image is sharp you should be ableto simply turn the nosepiece to the next objective lens and do minor adjustmentswith the fine focus knob.With Coaxial focusing both the coarse and fine focus knobs are on the sameaxis. The coarse focus knob is the larger knob located next to the arm of themicroscope. The fine focus knob is the smaller knob mounted on the outside ofthe coarse focus knob. Having both sets of knobs on the same axis makes it easi-er to switch from one focus knob to the other without removing your attention fromyour prepared slide.Disk Diaphragm (T-1901 & T-1902)The rotating disk is located under the stage (1=Smallest 6=Largest). Thedifferent sized holes are used to control the amount of light that is projectedupward into the slide. Simply bring one of the five different sized holes in linewith the stage opening. There is no set rule regarding which setting to use witha particular lens.Abbe Condenser 1.25 N.A. (included on model T-1903)The purpose of the condenser lens is to focus the light onto the specimen.(adjust the amount of light needed on a specimen) The N.A. of 1.25 gives it theability to be used with higher magnification 100x objective lens. Movement ofthe condenser is controlled by a lever that moves from side to side.COMPREHENSIVE SCOPEApplicationThe Comprehensive microscope is so versatile it allows you to transform yourmicroscope. Simply add a different head, objective lens and mechanical stagewith Abbe condenser to create a completely different microscope. The contourmetal base is covered with high-density plastic to prevent chipping undernormal use.MICROSCOPE PREPARATIONFor shipping purposes your Comprehensive Microscope has been shippedwith a restraining strap. Please Cut the strap prior to use as you will not needit again.Check the coarse focus tension. The knobs are oversized were designedfor better gripping. The coarse focus knob should turn easily to change thefocus, but the stage should not drift or slip on its own.Check the stage stop safety feature. Be sure the stage moves up anddown when turning the focusing knob. The stage stop is a thumb screw with alock nut found just behind the stage. To check the stop, first place a preparedslide in position for viewing. Move the coarse focus until the object and stageare as close together as they can be. Look at the slide and turn the 40x objec-tive into place. This objective should be very close to the slide, but not touching.Catalog# T- 1901 T-1902 T-190310x Widefield Eyepiece w/ pointer • • •Monocular Interchangeable Head •Dual View Interchangeable Head •Binocular Interchangeable Head •4 Hole Reversed Nosepiece • • •4x, 10x, 40xR Objective lens • •4x, 10x, 40xR, 100xR •Objective lensCoarse and Fine • • •Focal AdjustmentBuilt-in 20 watt Illuminator • • •Built-in Abbe Condenser •Interchangeable •Mechanical StageContour Base • • •SPECIFICATIONS*All models are available with fluorescent lighting (110-volt 5-watt fluorescent lamp)

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