User instructions Stereo microscope
Contents
1. dials 4 Now set the largest magnification 5 Once again still only looking through the righthand eyepiece bring the object into focus 6 Then set the smallest possible zoom factor again 7 Then look through the lefthand eyepiece with the left eye with dioptre adjustment ring and bring the object into focus by turning the dioptre adjustment ring left or right at the right point 8 In order to get the highest level of accuracy when adjusting the focus you should repeat steps 4 7 9 In this way the object being observed will be in focus on any magnification setting 5 5 Adjusting the stand Torque of the focus wheels You adjust the torque of the focus wheels by holding one of the two wheels in place and using the other hand to turn the other wheel Depending on the direction of the turn the torque will be increased or decreased On one hand this function can help to make it easier to adjust the focus and on the other hand it can prevent the microscope head from slipping down unintentionally In this way you can avoid possible damage which could occur if the objective lens and the object being observed should collide 11 OSF 4G BA e 1510 5 6 Using eye cups High Eye Point eyepieces The eye cups supplied with the microscope can basically be used at all times as they screen out intrusive light which is reflected from light sources from the environment onto the eyepiece and the result is better image quality B2. in the electrical system If this is the case then our Technical Service will be able to help 6 Optical data Eyepiece Specifications Objectives Magnification 1x 2x 3x 4x Total magnification 5x 10x 15x 20x WF 5x Field of view mm 20 810 6 7 85 Total magnification 10x 20x 30x 40x WF 10x Field of view mm 20 10 6 7 5 Total magnification 15x 30x 45x 60x WF 15x Field of view mm 15 7 5 Op 3 7 Total magnification 20x 40x 60x 80x WF 20x Field of view mm 810 6 5 4 3 3 2 Working distance 57 mm 57 mm 57 mm 57 mm 7 Features Model outfit Kern model Order number OSF 438 OSF 439 WF 5x 16 2 mm oo oo OZB A4101 Evepleces WF 10x 20 mm ee ee OZB A4102 yep WF 15x 15 mm oo oo OZB A4103 WF 20x 10mm oo OO OZB A4104 Stand mechanical incl carrying handle with LED lighting e e 0 35W transmitted light 1W reflected light i Frosted glass 59 5 mm e e OZB A4815 Stand inlay S black white 59 5 mm e e OZB A4816 External For information on external lighting units please see the Kern Optics main catalogue from illumination page 68 and visit our website www kern sohn com OSF 4G BA e 1510 e Standard configuration o Option 14 8 Trouble shooting Electrical system Problem Possible causes The lighting unit if fitted cannot be switched on The power cable is eit
3. KERN Em som cmon Ziegelei 1 Tel 49 0 7433 9933 0 Fax 49 0 7433 9933 149 D 72336 Balingen mum O PT CS ij I E mail info kern sohn com Internet www kern sohn com User instructions Stereo microscope KERN OSF 4G OSF 438 OSF 439 Version 1 0 01 2015 OSF 4G BA e 1510 KERN OSF 4G Version 1 0 01 2015 User instructions Stereo microscope Table of contents 1 Before EE EE 3 1 1 General Oe eege stees er ee EES 3 1 2 Notes on the electrical system ununnssnnnannnennnnnnnnnnnnnnnnnnnannnnnnnan nennen nnnnnnan nennen nnmnnn nnmnnn anne 3 1 3 nl E A 1 4 Maintenance and cleaning 20 ee ee 5 2 Ile TE 6 3 Basic Als ct a an ah en A an re a PE Pe 7 4 En ve UE 8 5 Operation and functionality uuuuuueseeneenenennnnnnnnnnnnnnnnnnnnnnnn 10 5 1 Getting Started WEE 10 5 2 Adjusting the interpupillary distance nnnsnsennnnnnnnnnnnnnennnnnnnnnnnnnnnnnnnnnnnennnnnnnnnnnnannennnnannnnn 10 5 3 Adjusting the magnification z 2 0u 4200 sn VEER peetdcee cectiedeeretancenestuedersetdceneestocinees 10 5 4 Dioptre adjustment ANd FOCUSSING nreennsennnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn nennen nennen 11 5 5 Adjustingthe stand 2 2222 EES a aaa en iaaa aira 11 5 6 Using eye cups High Eye Point eyepieces unnusnnssnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn nenn 12 5 7 Lighting control EE 13 5 8 Using external illumination units unse
4. Prism housing Dioptre adjustment ring Microscope head e Tube Objective Object holder Stand inlay Transmitting light unit fitted underneath Microscope stand OSF 4G BA e 1510 Carrying handle Microscope holder Focus dial Reflected light illumination Main switch Switch Dimmer for transmitting light 3 Basic data Optical system Greenough Dimmable lighting Yes Tube angled at 45 Interpupillary distance 55 75 mm Dioptre adjustment One sided left Product dimensions WxDxH 230x180x275 mm Standard configuration Model Tube Eyepiece Field of view Objective Stand Illumination KERN mm OSF 438 Binocular WF 10x 20 mm 20 1x 2x 3x mechanical 1W LED reflected light 0 35W LED transmitted light 1W LED reflected light 0 35W LED OSF 439 Binocular WF 10x 20 mm 20 1x 2x 4x mechanical transmitted light 7 OSF 4G BA e 1510 4 Assembly The first step is to position the microscope stand on a firm level surface The holder is firmly attached to the pillar of the stand The microscope head in turn is fixed to the holder so that there is no possibility of spinning it Please see section 5 5 for more details on adjusting the stand Both eyepieces are already fitted in the tube You just need to remove the protective film which covers them When doing this make sure that you do not touch the optical lenses
5. een authorised by KERN 10 Disposal The packaging is made of environmentally friendly materials which you can dispose of at your local recycling centre Disposal of the storage box and device must be carried out by the operator in accordance with all national or regional laws in force in the location of use 11 Further information The illustrations may differ slightly from the product The descriptions and illustrations in this user manual are subject to change without notice Further developments on the device may lead to these changes All language versions contain a non binding translation The original German document is the binding version OSF 4G BA e 1510 16
6. her not connected or not connected correctly The bulb is not fitted The bulb has blown The fuse has blown The brightness control is set to the lowest level The bulb has blown The wrong bulb has been used The input voltage was too high The bulb flickers The bulb is not correctly fitted The lamp is worn out The bulb brightness is not sufficient The wrong bulb has been used The input voltage is too low Optical unit Problem Possible causes You can see two images The gap between the eyes is not set correctly The magnifications of the eyepieces do not match There is dirt in the visual field There is dirt on the object being observed There is dirt on the eyepiece surface The image is unclear There is dirt on the objective surface The focus wheels are jammed The torque of the focus wheels is set too high The microscope head slips down while you are viewing the object The torque of the focus wheels is set too low Eyes get tired easily The dioptre adjustment is not correct The brightness adjustment is not correct 15 OSF 4G BA e 1510 9 Service If after studying the user manual you still have questions about commissioning or using the microscope or if unforeseen problems should arise please get in touch with your dealer The device may only be opened by trained service engineers who have b
7. ible both for on off switching and the adjustment of the light intensity of the transmitted illumination The same functions belong to the control wheel on the lefthand side surface of the stand base according to the reflected illumination 5 8 Using external illumination units If when using a microscope in its standard version the lighting is not suitable for the application then it often makes sense to fit an external lighting unit to overcome this problem The lighting units which are suitable for devices of the OSF 4G series are goose neck lighting units see figure These are available as LED as well as halogen versions and also have an on off switch or different controller Typical goose neck lighting unit Using goose neck lighting units Depending on the requirements a goose neck lighting unit is placed next to in front of or behind the microscope The light source is in the housing of the unit and is emitted through one or several optical fibre cables These cables are flexible and therefore offer a large number of positioning options so that the object being observed is perfectly illuminated 13 OSF 4G BA e 1510 5 9 Changing the bulb LED The devices in the OSF 4G series are all fitted with LED bulbs Due to the long service life of an LED lighting system for these microscopes it will not be necessary to simply change a bulb Problems with the lighting unit would therefore in most cases be caused by defects
8. ooking through the eyepieces use one hand to hold the righthand or lefthand prism housing firmly By rotating outwards or inwards you can either increase or reduce the gap between the eyes As soon as the lefthand and righthand visual fields exactly overlap each other this is the correct gap between the eyes 5 3 Adjusting the magnification As the KERN OSF 4G series covers stereo microscopes without zoom we will describe how to set the magnification using the integrated and rotating objective For the devices in this series you can select between three different magnification factors at any time Chapter 6 Optical data gives information on the possible overall magnification which the microscope can produce It will also include the optional use of different eyepieces OSF 4G BA e 1510 10 5 4 Dioptre adjustment and focussing A special feature of stereo microscopes is that they are fitted with an optical unit which has a relatively high depth of field In order to be able get the most benefit from this feature each user must synchronise the focussing mechanisms for themselves The steps to do this are described in the following section 1 Place the object to be observed on the surface under the objective 2 Use the objective to set the smallest possible magnification 3 Look through the righthand eyepiece without dioptre adjustment ring with the right eye and bring the object into focus by using the focus control
9. other damage to the device could occur The lighting switches must also be switched off before the mains cable is connected In this way you will avoid triggering an electric shock If you are using an extension cable then the mains cable you use must be earthed When carrying out any procedures whereby you come into contact with the electrical system of the device such as for example changing the bulb only carry out these procedures when the power is disconnected 3 OSF 4G BA e 1510 1 3 Storage You should ensure that the device is not exposed to direct sunlight temperatures which are too high or too low vibrations dust or a high level of humidity The ideal temperature range is between 0 and 40 C and a relative humidity of 85 should not be exceeded The device should always be located on a rigid smooth horizontal surface For devices with pillar stands the microscope holder must not be rotated back too far If you do this there is a risk that the microscope could tip over When the microscope is not being used you should fit the objective cap and cover the microscope with the enclosed dust protective cover If the eyepieces are being stored separately the protective caps must be fitted to the tube connectors In most cases if dust and dirt gets inside the optical unit of a microscope this can cause irreversible errors or damage The best way to store accessories which consist of optical elements such as for exam
10. ple eyepieces and objectives is in a dry box with desiccant OSF 4G BA e 1510 4 1 4 Maintenance and cleaning In any event the device must be kept clean and dusted regularly If any moisture should be occur before you wipe down the device you must ensure that the mains power is switched off When glass components become dirty the best way to clean them is to wipe them gently with a lint free cloth To wipe oil stains or finger prints off the lens surface moisten the lint free cloth with a mixture of ether and alcohol 70 30 ratio and use this to clean the lens You must be careful when handling ether and alcohol as these are highly flammable substances You must therefore keep it away from naked flames and electrical devices which can be switched on and off and only use it in well ventilated rooms However organic solutions of this type should not be used to clean other components of the device This could lead to damage to the paint finish To do this it is sufficient to use a neutral cleaning product You could also use the following cleaning products to clean the optical components Special cleaner for optical lenses Special optical cleaning cloths Bellows Brush When handled correctly and checked regularly the microscope should give many years of efficient service Should repairs still be necessary please contact your KERN dealer or our Technical Department 5 OSF 4G BA e 1510 2 Nomenclature Eyepieces
11. snssnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnnn nennen nenn nennen 13 5 9 Ghanging the bulb 22 u ee ae daalena Niak 14 6 i CR EE 14 7 EES Eege 14 8 Trouble sho6ling 22 ee 15 9 EE ebe Eeer 16 WO ve EE 16 11 Further informatlonzan eine 16 OSF 4G BA e 1510 2 1 Before use 1 1 General notes You must open the packaging carefully to make sure that none of the accessories in the packaging fall on the floor and get broken In general microscopes should always be handled carefully because they are sensitive precision instruments When using or transporting the microscope it is particularly important to avoid abrupt movements as this may damage the optical components You should also avoid getting dirt or finger prints on the lens surface because in most cases this will reduce image clarity To maintain the performance of the microscope it must never be disassembled So components such as lenses and other optical elements should be left as they were before use Also the electrical parts in the base of the device must not be tampered with as in this area there is an additional risk of triggering an electric shock 1 2 Notes on the electrical system Before connecting to a mains power supply you must make sure that you are using the correct input voltage The mains cable supplied has an external power supply The necessary values are shown on this power supply If you do not comply with these specifications then fires or
12. ut primarily if eyepieces with a high eye point particularly suitable for those who wear glasses are used then it may also be useful for users who don t wear glasses to fit the eye cups to the eyepieces These special eyepieces are also called High Eye Point eyepieces They can be identified by the glasses symbol on the side They are also marked in the item description by an additional H example HSWF 10x 23 mm When fitting the eye cups make sure that the dioptre setting is not moved We would therefore advise that you hold the dioptre adjustment ring on an eyepiece with one hand while you fit the eye cup with the other Before using the microscope users who wear glasses must remove the eye cups which you may find on High Eye Point eyepieces As the eye cups are made of rubber you must be aware that when you are using them they can become slightly dirty through grease residues In order to maintain hygiene we would therefore recommend that you clean the eye cups regularly e g with a damp cloth Se Eye cups High Eye Point eyepiece identified by the glasses symbol OSF 4G BA e 1510 12 5 7 Lighting control The microscopes in the OSF 4G series have an adjustable reflected and transmitted light illumination The power supply is guaranteed by connecting the mains cable and pressing the main switch on the right rear corner The control wheel on the righthand side surface of the stand base is respons
13. with your fingers In general you should avoid using two eyepieces with different magnifications When changing the eyepieces you must also loosen the small silver screw under the eyepiece on the tube connectors and once the new eyepiece is fitted then it must be re tightened With regard to the use of transmitted light illumination you must make sure that the frosted glass stand insert is fitted in the centre of the stand base so that the transmitted light can be used correctly Additional optional attachments e The eye cups supplied with the microscopes can be fitted to the eyepieces see section 5 6 OSF 4G BA e 1510 8 OSF 438 Assembled stereo microscope 9 OSF 4G BA e 1510 5 Operation and functionality 5 1 Getting started After assembly if the microscope is ready for use then you must first establish a power connection using the cable supplied Please see section 5 7 for more details on adjusting the lighting Do not forget to remove the cap from the bottom of the objective so that you will then be able to see a reflection of the object being observed in the eyepiece All important functions which relate to the use of the devices in this document are described in the following sections 5 2 Adjusting the interpupillary distance Different users have different gaps between the eyes So each time a different person uses the microscope the gap between the two eyepieces must be re adjusted While you are l
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