14 SafetyG-30-1426-en S88 Floor Stand with Lifting Column Issue 9.0Printed on 28. 01. 2009• Keep the user's manuals where they are easily accessible at all timesfor the persons operating the instrument.• Never look at the sun through the binocular tube, the objective lens oran eyepiece.• Do not pull at the light guide cable, at the power cord or at other cableconnections.• This instrument is a high-grade technological product. To ensure opti-mum performance and safe working order of the instrument, its safetymust be checked once every 12 months. We recommend having thischeck performed by our service representative as part of regular main-tenance work.If a failure occurs which you cannot correct using the trouble-shootingtable, attach a sign to the instrument stating it is out of order and con-tact our service representative.Notes on EMC (electromagnetic compatibility)The system meets the EMC requirements of IEC 60601-1-2. During useof the system, the precautionary measures concerning EMC listed belowmust be observed.Only use accessories that have been approved by Carl Zeiss for thissystem.Do not use any portable or mobile high frequency communication devicesin the vicinity of the system, as this may lead to an impairment of its func-tion.The system complies with the limits for a Class A device concerning radiofrequency emission. However, the possibility of interference to high fre-quency receiving devices (e.g. TV sets or radios) being used in the sur-roundings cannot be ruled out. If interference of this type occurs, pleaseinform your Carl Zeiss Service.Connection of navigation systems (option)The Carl Zeiss components "Surgical microscope on suspension system"can be integrated into an external navigation system. An optional naviga-tion interface is available.• The manufacturer of the external navigation system (system supplier)is responsible for the following:– Confirmation that his navigation systems have been tested andcertified for operation with the respective Carl Zeiss surgical micro-scope on a suspension system in accordance with the require-ments specified in the Carl Zeiss interface description "NavigationInterface for Carl Zeiss Surgical Microscopes".