MPI-540 ● MPI-540-PV – BRIEF USER MANUAL
6.2.4 PC connection and data transmission
Connection to a computer (PC mode), ensures:
transmission of data stored in the recorder memory:
o it is possible to read data from all completed recordings,
When connected to a PC, the display shows message "PC Connection"
When connected to a PC, all buttons are locked except button, unless the recorder operates
with key lock mode (e.g. during recording ) – then all the buttons are locked. The icon whose
selection interrupts the connection with the PC is displayed on the screen on the bottom bar.
When within 10 seconds of connecting a PC to the device no data exchange occurs between the
device and the computer, the device exits data exchange mode and terminates the connection.
Sonel Analysis software also allows you to read data directly from a microSD card using an external
memory card reader. This method allows for the fastest reading of the recorded data. To use this
mode, remove the memory card from the meter and put it into the reader connected to a computer
(when removing the card, follow the rules described in 6.2.1; it is safe to turn the meter off earlier).
7 Power supply
7.1 Monitoring of the battery charge status
The device is equipped with a Li-Ion battery pack 11.1 V 3.4 Ah. The battery pack includes a cir-
cuit monitoring its charge status, which provides precise level of battery pack charge and a tempera-
ture sensor.
The charging level of the battery pack is indicated by icon on the top bar of the screen on the right
side
7.2 Replacing rechargeable batteries
MPI-540 meter is powered from SONEL LiIon rechargeable battery pack.
Battery charger is installed inside the meter and cooperates only with the manufacturer’s re-
chargeable battery pack. The charger is powered by external power supply adapter. It can be also
powered from the car cigarette lighter socket. Both the rechargeable battery pack and the adapter are
standard components of the meter.
WARNING
If the test leads are left in the terminals during replacement of the batteries,
there is a risk of electric shock with a dangerous voltage.
7.3 Charging the rechargeable batteries
Charging the battery pack of the device is started automatically after connecting:
2 V DC power supply adapter,
charging cable for the car cigarette lighter.
Charging is indicated by the icon next to the battery symbol on the top bar and by the
H.V./REC/CONT. diode. The temperature of the battery and the ambient temperature influence the
charging process. If the battery temperature is below 0°C or higher than 45°C, the charging process is
stopped.
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