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User Manual Vesala SG33 X2.0 ENG
3.4
Selecting and changing batteries
Signal Generator SG33 can use three different types of batteries: IEC LR6 alkaline, HR6 NiMH or
FR6 Li-FeS2. Ambient temperature, boost mode usage, environment and economy should be
considered when selecting batteries. Disposable FR6 Li-FeS2 batteries give the best
performance and longest battery life but are rather expensive. Rechargeable HR6 NiMH
batteries are an all-round good choice at temperatures down to -10°C and especially when
boost mode is used. Low cost LR6 alkaline batteries perform well in normal mode at ambient
temperatures above +5°C. At lower temperatures boost mode cannot be used with LR6
batteries. However, LR6 batteries can be used in normal mode down to -10°C with slightly
reduced battery life.
DANGER
: Risk of electric shock
When Signal Generator SG33 is connected to a hazardously live circuit, batteries will become
hazardously live. Touching hazardously live batteries may result in an injury or death. Always
disconnect both test leads before removing the battery cover.
If the device is dirty or wet, clean and dry the outer surface of the device with a soft cloth before
removing the battery cover. Open two PZ2 screws at the bottom of the device to remove the
battery cover. Inspect the battery cover seal for dirt. If necessary, clean the battery cover seal
according to section 5.2: Cleaning and maintenance. Remove old batteries. Insert six batteries of
the same type. Observe battery polarity. Close battery cover carefully with hand tools and do
not overtighten the screws. Do not operate the device without its battery cover in place.
