MRU-200-GPS OPERATING MANUAL Version 1.06
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6
Power supply
Note:
The MRU-200-GPS has been designed for use only with the supplied recharge-
able batteries. Using disposable instead of rechargeable batteries should take
place only in emergency situations when the rechargeable batteries are deplet-
ed. However, disposable batteries will discharge rapidly after several meas-
urements, which should be expected due to the high instantaneous power con-
sumption of the instrument.
6.1 Monitoring of the power supply voltage
The level of the charge of the batteries indicated by the symbol in the right upper corner of the
display:
Battery charged.
Battery low.
Battery fully discharged.
Battery fully discharged,
Measurements cannot proceed.
Note:
- The displayed
BAT
symbol means insufficient power supply voltage and the batteries need to be re-
charged.
- Measurements performed with an insufficient meter power supply voltage are affected by additional
errors which are impossible to ascertain by the user. They cannot be relied upon for correct meas-
urements of the tested earth ground system.
6.2 Replacement of batteries
The MRU-200-GPS meter is equipped with a package of NiMH batteries and a charger. The bat-
teries insert into the battery compartment. The charger is built in to the meter, and must be used only
to charge the original batteries. The charger is powered from an external power supply, or a car light-
er socket adapter (supplied as a standard accessory).
