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The capacity cannot be calculated accurately until the batteries have discharged and
recharged completely at least once. Until then, the capacity data will be followed by '?'.
5.1.7.2.2 Voltage (V)
This menu item provides information on the voltage remaining in the batteries. The voltage
of fully charged batteries is approximately 5.6 V. If battery voltage falls below ca. 4.0 V, the
Braille System turns itself off. You can thus use Voltage to estimate your batteries' status.
We recommend replacing the rechargeable batteries if you notice the voltage decreasing
unusually rapidly after having used them for some time.
5.1.7.2.3 Status (S)
This function displays the battery states discharging, charging and quick charging.
While the Braille System runs off the batteries, the batteries are being discharged, and the
message 'Running on battery ' is displayed.
In order to recharge the batteries, simply connect the included power supply to a power
outlet. The batteries will recharge in two to three hours. Recharging occurs entirely
automatically — it is not possible to overcharge the batteries. The Braille System
automatically switches from initially high recharging voltage to a very low charge just to
maintain a full charge.
While the batteries are receiving a high recharge voltage, the message 'Battery quick
charging' will be displayed. If they are only receiving a maintenance charge, the message
will read 'Battery charging'.
5.1.7.3 Keyboard layout (K)
This function displays the language currently implemented on the Braille System via the
keyboard layout table. Keyboard tables are available for several languages, and the
included Keyboard Layout Compiler (BKC) can be used to create custom key
assignments.
5.1.7.4 Firmware version (F)
You can use this function to display the version number of the firmware and the Braille
System's serial number. Pressing the [Enter] key will first show the firmware version
information. This is the same message that is displayed when you power up your Braille
System. If the message text does not fit entirely on the display, you can read it by using
the [R] and [L] keys. After pressing [ESC] at this point, your Braille System's serial number
is displayed. Pressing [ESC] again will return you to the Firmware version menu item.
5.1.7.5 System information
This function displays important system information in almost any situation. It is NOT
provided as a menu item, but has to be called by pressing [SPC+2 3 4 7 8] or
{Shift+Enter}. The following information is displayed:
Date and time (updated continually)
Battery voltage (if there are rechargeable batteries in your Braille System)
Free memory.
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