3.4.1.1 Charging the battery via the PC
Proceed as follows:
1. Switch off the PROFI TX.
2. Lift the device. The recessed control for the sliding latch is located on the
underside of the case.
3. Slide the sliding latch towards the device centre.
4. Switch on the PC or laptop. Connect the supplied USB cable to a USB socket
on the PC and to the mini USB socket on the PROFI TX.
o The PROFI TX starts automatically in charging mode.
o The USB icon is shown on the right side of the screen and the
state of charge and the charging current are displayed on the left.
Maximum current: 500 mA.
The PROFI TX logs into the PC as mass storage with the name
"PROFI TX".
When used for the first time, the PC automatically installs the required device
drivers. Do not switch off the PC and/or the transmitter and do not disconnect the
USB cable while the installation is in progress. This may take several minutes.
Some operating systems require an active Internet connection for this process.
If you press and hold the Power button until the annular light is fully lit, the
transmitter switches from charging mode to normal mode. The PROFI TX logs off
from the PC as USB mass storage and logs in again as a game controller
(see chapter 7 "Operating the transmitter " on page 174).
The RF module is disabled while a USB connection is established. It also remains
switched off after disconnection. Otherwise, the RF module would be re-enabled
when the host (PC, laptop, etc.) is switched off.