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Page 5 

Instruction  Manual     Mesotest II 

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3. Safety Precautions

 

 
The manufacturer is required by law to 
inform the user explicitly on safety aspects 
involved in dealing with this unit. This 
chapter contains a summary of the most 
important points to be noted regarding 
technical safety. 
 
Other safety precautions are found in the 
text of this Instruction Manual 
and are designated by 
 
 
Please pay special attention to these 
instructions as well. 
Store this Instruction Manual with care in a 
place where it is accessible for persons 
using the unit at all times; also, give due 
attention to Instruction Manuals of the unit's 
other accessories as required. 
The unit may only be used for its intended 
purpose, as described in this Instruction 
Manual (chapter 5), and by persons whose 
proper use of the unit is ensured by their 
training and practical experience. 
 
Use the unit only with original parts and 
accessories delivered by us and in a 
technically flawless condition. Do not 
attempt to use a damaged unit, but contact 
your supplier. 
 
Please abide by accident prevention laws 
where applicable, and be especially careful 
to observe the instructions and information 
printed on the unit. 
The unit may be used in medical areas only 
if these rooms are equipped according to 
VDE norms or the equivalent (Association of 
German Electrotechnical Engineers). 
 
Always disconnect all mains plugs from their 
power outlets before carrying out 
maintenance or cleaning work. 
Disconnect the mains plug at once if you 
notice smoke, sparks, or unusual sounds 
coming from the unit. Do not use the unit 
again until the problem has been corrected 
by our service personnel. 
Do not connect electrical plugs and sockets 
by force. If it is not possible to connect them, 
verify whether the plug is correct for the 
socket. If you find damage in either the plug 
or the socket, have them repaired by our 
service personnel. 

Do not disconnect electric plugs from their 
sockets by pulling on the cable, but rather 
on the plug. 
 
Auxiliary equipment connected to the analog 
or digital interfaces of the unit must have 
proven compatibility with the EN and/or IEC 
specifications of these interfaces. 
Furthermore, all configurations must meet 
IEC Systems Norm 601-1.  
 
Do not attempt to configure electro-medical 
systems by combining the Mesotest II with 
non-medical electrical equipment (e.g. data 
processing equipment) if this might reduce 
the level of patient safety below that 
recommended by IEC Norm 601-1. Where 
permissible levels for leakage current may 
be exceeded due to such combinations, 
protective disconnecting devices must be 
present. 
 
Do not use the equipment named in the 
Standard Equipment List in the following 
situations: 
- Where there is danger of explosion. 
- In the presence of flammable anesthetics 
or volatile solvents such as alcohol, benzine 
or the like. 
 
Do not store or use the unit in damp rooms. 
Avoid placing the unit near dripping, 
gushing, or splashing water, and make 
certain that no fluid can enter the unit. For 
this reason, please do not place any 
containers full of liquid on top of the unit, 
and also take care when cleaning the unit 
with a damp cloth that no fluid gets into the 
unit. 
Do not cover the ventilation openings. 
 
This unit is a high-quality technical product. 
To ensure that it performs flawlessly and 
safely, we recommend having the unit 
inspected regularly every two years by our 
service personnel. Should any problem arise 
which you cannot solve using the enclosed 
checklist of errors, label the unit "Out of 
Order" and contact our service department. 
 
 
 
 

 
 

 
 
 

 

Summary of Contents for Mesotest II b

Page 1: ...Mesotest II b Instruction Manual Copyright by G 62800 0607 e...

Page 2: ...ce unit for testing mesopic vision and glare sensitivity In the early 1960s OCULUS cooperated with the University Eye Clinic in T bingen to develop and build the world s first unit for testing mesopic...

Page 3: ...the unit 14 7 1 Before each use 14 7 2 Preparation of the examinee 14 7 3 The examination procedure 15 7 4 Additional examinations 16 7 5 Evaluation of results 16 7 6 After each use 16 8 Maintenance...

Page 4: ...area illumination Mains cable Instruction Manual Notepad for test results 100 pages Dust cover Metal covering for viewing aperture If you have also acquired the software module cf Chapter 10 3 please...

Page 5: ...onnel Do not connect electrical plugs and sockets by force If it is not possible to connect them verify whether the plug is correct for the socket If you find damage in either the plug or the socket h...

Page 6: ..._____________________________ 4 Description of the Unit and Its Functions 4 1 Components of the Unit Figure 1 Mesotest II front view No 1 Front shell of the housing No 2 Lining of the viewing aperture...

Page 7: ...______________________________________________________ No 6 Rear wall of housing No 7 Tinted window No 8 Mains plug with fuse holder No 9 Socket of the serial interface No 10 Mains switch No 11 Type p...

Page 8: ...0 10 cd m2 with glare This corresponds to the brightness of automobile traffic at twilight or at night Landolt rings acc to DIN Norm No 58220 T1 are used as optotypes Since visual acuity decreases wit...

Page 9: ...and by function switches the illumination off whenever there has been no operating input for a certain period of time A projection device above the test panel assists in fixation It can be used to pro...

Page 10: ...Option Landolt ring position Bottom Left LU Landolt ring position Bottom U Landolt ring position Bottom Right RU 2nd function reset minus lenses to 0 D Option Turns Fixation Assistance on and off Sel...

Page 11: ...which is connected to the serial interface of the Mesotest II Following are a few displays which are possible on the LCD module Test No 1 Display after the unit is turned on B Binocular examination T...

Page 12: ...e voltage range given on the rating plate Please abide by the safety precautions given above 6 First Use of the Unit 6 1 Before First Use Please remove the unit and its accessories from their packing...

Page 13: ...fter a brief automatic self test The LCD module the work area light and the light in the mains switch light up to show readiness for use 6 3 Instructions for Transport and Storage A carrying bag is av...

Page 14: ...et with a flawless protective earth conductor 7 2 Preparation of the Examinee The eyes of the person to be examined must be adapted to darkness for ca 5 minutes before the examination This poses no pr...

Page 15: ...he two red lights If the examinee does not do this and looks directly into the glare light source during the change to Test No 5 he will recognize no optotypes at first This can cause a delay in the e...

Page 16: ...rast which is still correctly recognized constitutes the basis for evaluating visual performance For the evaluation of the ability to drive at night the German Ophthalmological society DOG gives follo...

Page 17: ...tion for plastic surfaces to reduce subsequent static attraction of dust particles Otherwise clean the outer surfaces of the unit by wiping them with a damp cloth If there are residues you can wipe th...

Page 18: ...0 a To do this grasp the clip spring successively by both of its rounded ends and unhook the ends of the spring upwards out of the rubber holder Then pull the clip spring completely out of the upper g...

Page 19: ...rasp the small grip on its top and pull the drawer out towards the back For replacements use only the fuse type given on the rating plate Press the drawer back into place until the grip of the drawer...

Page 20: ...on room is too brightly illuminated Darken the room or cover the tinted window with the enclosed metal cover The work area light fails to light up The light bulb is defective Replace it cf Chapter 8 4...

Page 21: ...fety instructions before initial use and to observe them when using the instrument This instrument is provided with a warranty in accordance with the legal regulations Any manipulation of the device b...

Page 22: ...rk is carried out by authorized persons these persons must be requested to provide a certification of the type and extent of their repair work including details on changes made in the ratings or the c...

Page 23: ...Buser und Susanne M ller Welche visuelle Information ben tigt der Kraftfahrer f r die sichere Teilnahme am Stra enverkehr Ophthalmologie 1994 91 383 394 Springer Verlag 1994 Nolte W 1962 Die Leuchtdic...

Page 24: ...ical Products Dipl Ing Rainer Kirchh bel Managing Director OCULUS Optikger te GmbH 11 3 Order Information Accessories Replacement Parts 62800 Mesotest II 62801 Mesotest II Type 62800 with 3 additional...

Page 25: ...sistance Via 2 light diodes can be turned on at any time Unit viewing aperture Elastic lining to seal off distracting room light made of material which is pleasant to the touch with ventilation approp...

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