User Manual Bearing System RT-300
Issue: 2017/06/27 [Rev 1.04.c] Page 62 of 79 12-9-1-0013-9-2-0001-3-1-60
6.3 Special Functions
6.3.1 Locking / Unlocking the Setup Menu
The setup menu can be locked in order to prevent unauthorized change of the setup or by
mistake. Select SETUP in the main menu and keep pressing key 12 < Scan > for about 3 sec,
until the symbol (padlock) is appearing (see Fig. 50). The setup menu is locked.
In order to unlock the menu, select SETUP in the main menu keep pressed key 12 < Scan > for
3 sec, until the symbol disappears. The setup menu is unlocked.
6.3.2 Resetting Brightness and Contrast Adjustment of Display
Reading of the LC-display and correction of the contrast value may become impossible if
adjusting the contrast value incorrectly.
In that case brightness and contrast adjustments can be reset as follows:
- Switch off DCU using key 1 < On/Off >
- Switch on DCU using key 1 < On/Off > and
- Press key 7 < Menu > within 1 sec after pressing key < ON/OFF >
Contrast of display and background lighting are set to the factory default. This adjustment will
not be stored after switching off the DCU. Therefore, all adjustments in submenu LIGHT/LCD
(see 6.2.1.1) have to be redone and confirmed with key < Ok >.
6.3.3 Loading Firmware Updates
If there is a new firmware available, it can be uploaded via the interface port on the backside of
the DCU. How to proceed is described in the documentation “RT-300 Firmware Update” which
is available by contacting RHOTHETA (www.rhotheta.de).
6.4 Interfaces
On the backside of the DCU three connectors can be found, connecting antenna, power supply
and other external devices.
6.4.1 Antenna Connector on DCU
The antenna connector is connecting Display-Control-Unit (DCU) and (Fig. 2 ) Antenna Unit
(AU).
Type of connector: D-Sub-socket; 9-poled
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