Extech Instruments PRC70, User Manual

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Page 9 PRC70-EN-V2.1 12/11
z Condensation may occur if the instrument is relocated from places with low temperature and humidity to places with
high temperature and humidity, or if the instrument experiences a sudden temperature change. In these cases, leave
the instrument under the given ambient temperature for at least one hour to ensure that the instrument is free from
condensation before using the instrument.
Indication of Battery Level
The battery replacement indicator shows the battery level in five steps according to the measured voltage of the batteries.
Full battery:
The battery level is below 50% full:
The battery level is below 25% full:
Low battery:
The battery icon flashes in sequence when charging.
Note that the battery replacement indicator is driven by directly measuring the battery voltage when the calibrator is in actual
operation. Consequently, the indicator may read differently depending on the battery load condition (e.g., the load condition
of the source output or on/off state of the measurement function).
Replace the batteries and fuses as described in the section “Replacing or installing batteries and fuses” toward the end of
this User Guide.
Connecting the Charger
Warning
z Make sure the voltage of the AC power source matches the rated supply voltage of the Charger before connecting the
Charger to the AC power source.
z Do not use a Charger other than the dedicated, supplied Charger.
z Do not charge non Ni-Cd, Ni-MH batteries.
Step 1:
Ensure that the calibrator is OFF.
Step 2:
Insert the plug of the optional Charger into the Charger connection jack.
Notes:
z Switch OFF the calibrator before connecting or disconnecting the Charger from AC power.
z Unplug the Charger from the Charger connection jack of the calibrator when discharging.
z Do not charge the calibrator without batteries installed.