USER MANUAL | NOVA L 2.4
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OCU Display
The Nova L 2.4 OCU is equipped with a full color sunlight readable TFT screen. Its graphical layout can be programmed using
the Hetronic Graphics Programming (HGP) tool. The default display graphical interface includes a status bar at the top. This
includes the time, signal strength bar, battery indicator and the date. The status bar can be disabled from the HGP tool.
Signal Strength Indicator
The signal strength indicator is only present on OCUs supporting feedback function from the MCU. This indicator provides
information about the quality of the feedback radio link between the OCU and the MCU. It is always visible when the OCU is
switched on. The indicator is defined by four vertical bars, with each bar being representative of the strength of the communication
link. A strong link is represented by four bars. As the link quality deteriorates, the signal indicator shows less bars relative to the
strength of the OCU received signal from the MCU.
COMM Error
If a 'COMM error' page is displayed, it indicates an MCU to OCU feedback link failure, meaning the OCU is not receiving signals
from the MCU. This poses an imminent risk of losing radio connection. Therefore, it is important to check for any obstacles blocking
the connection and ensure that the units are within the range of the radio system. The COMM Error graphics can be changed
using the HGP tool.
OCU STOP Status
The STOP screen is displayed whenever the OCU is in STOP mode, either when the user manually activates the Stop button or
when the OCU goes into a passive stop when OCU and MCU are out of range or an OCU error occurs. The ‘STOP’ graphic can
be changed using the HGP tool.
Battery Level Indicator
The battery level indicator provides indicative information about the charge status of the battery. As the battery charge depletes,
the battery level indicator is represented by a depleting battery. The color indicator decreases as the battery is discharged until it
reaches low battery level. At this stage the indicator starts flashing indicating that it needs to be replaced.
Graphical Feedback
The feedback function is used to transmit information from the equipment through the Hetronic MCU. Graphical user interface
can be a combination of text and custom graphical images configured through HGP tool to meet the requirements of the user and
OCU application. Refer to the HGP user manual for more information about programming the OCU display.
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