SplitBox
– User Manual
SPLITBOXUM.1.2
2. Typical connection diagrams
As a rule of thumb, all serial ports on the Ekinox/Apogee should be configured in RS-422 mode as the
communication between the SplitBox and the Ekinox/Apogee is using the RS-422 protocol. The RS-422
protocol is much more secure than the RS-232 especially over long distances.
Each SplitBox serial ports can however be individually configured, for RS-232 or RS-422 levels. This is done
using dedicated switched that are present on the back face of the SplitBox unit. Please refer to section
4.4 Configuration Switches for detailed information about switches usage and functions.
2.1. SplitBox without integrated GNSS
The SplitBox models without embedded GNSS receiver connections are quite straightforward, as all Ekinox/
Apogee ports map directly to a SplitBox port.
Warning: The subsea version doesn't support CAN communications. In addition, the Sync In C is not
available for subsea units.
2.2. SplitBox with GNSS (models -S or -T)
On the SplitBox equipped with an internal GNSS receiver, the connections are also straight forward for all
ports except for the PORT D.
As shown on the diagram below, the GNSS receiver COM3 is directly connected to the Ekinox/Apogee
PORT D. This serial port is thus used by the Ekinox/Apogee to receive GPS data from the SplitBox to be
integrated into the navigation solution.
On the SplitBox side, the PORT D has two functions that can be selected using the configuration switches
present on the back face of the SplitBox:
●
GPS configuration, in this mode, the PORT D Rx and Tx signals are directly connected to the internal
GNSS receiver COM 1. This serial link can be used to access and configure the GNSS receiver.
8/30
Figure 2.1: SplitBox without GNSS connection diagram
Splitbox
Ekinox / Apogee
PWR
PORT A, B, C, D, E
RS-422
SYNC IN A, B, C, D, E
SYNC OUT A, B
ETH
CAN
PORT A, B, C, D, E
RS-232 / RS-422
ETH
SYNC IN A, B, C, D, E
SYNC OUT A, B
PWR
CAN
