Battery Charging - THORLABS PM100D Operation Manuals

4.6 Battery Charging

selected file. Each log file contains a header with sensor information, start time stamp
and the unit of measure (Watts or Joules). The data itself are tab-stop separated and
contain the measurement value in engineering notation with '.' decimal separator and
the elapsed time in milliseconds since start time. To load the log data to a computer,
the card currently must be removed from the PM100D and read by an external card
reader. The files can easily be edit with text pad or imported to an Excel spreadsheet
(chose tab stop separator and, when necessary the right decimal separator).
The system is tested with the SD card type and memory size that came with the
instrument, though it should work with most available SD cards, Thorlabs does not
guarantee proper function with other SD cards. In any case the SD card has to be
formatted to 'FAT32' file system.
4.6 Battery Charging
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The PM100D is powered by a 1 cell LiPo battery that needs to be recharged
intermittently by plugging the AC adapter or plugging the USB cable to a computer.
To fully charge the battery it takes approximately 3-4 hours. A built in charging circuit
automatically regulates and terminates the charging.
Following battery icons in the display header show the charging state from empty to
full battery
The empty battery symbol starts blinking for one minute until the unit shuts off.
When an external power supply is plugged the symbols above change sequent until
the battery is fully charged.
The following icon will appear when the battery gets not fully loaded after a given
time of approximately four hours. This can happen when the unit is switched on, the
charging is done via USB link and the computer cannot supply sufficient charging
current. The symbol will disappear after 2 seconds when disconnecting the external
power supply and show the actual battery charging state.
Should the 'arrow icon' permanently remain there may be a malfunction
either in the battery itself or in the charging circuitry, please refer to
chapter 0 for maintenance and repair.
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