432-0007-00-28-en-US v100
Integration with NMEA Devices – Application Note
System Connections
It is assumed the camera is installed and operational, and can be controlled via the FLIR Joystick Control
Unit (JCU).
Warning: Do not connect a Power over Ethernet (PoE) Power Source Equipment (PSE) device (such as a
PoE switch or injector) directly into the Ethernet port of the MV-Series camera. Damage to the camera
could result and will void the manufacturer’s warranty.
The Ethernet interface on the camera is a PSE device. In a simple installation, the FLIR JCU is connected
directly to the camera Ethernet and draws its power from the camera. In this example, a PoE switch is used
instead to power the JCU and interconnect it with the camera. In addition, a Serial to Ethernet Server is
also connected to the PoE switch, and this allows the radar communications to be sent to the camera.
Important: Per the warning above, the Ethernet connection from the camera is connected to the
unpowered (non-PoE) port of the PoE switch. The switch shown has one unpowered port and 4 powered
ports. Alternatively, it would be possible to use a non-PoE Ethernet switch, and use PoE Injectors to power
the JCU and the Serial to Ethernet Server.
The NMEA 0183 standard uses a simple ASCII serial communications protocol that defines how data are
transmitted in a "sentence" from one "talker" (such as the radar) to one or more "listeners" (such as a
camera) at a time. It is possible for a talker to have a unidirectional conversation with a listener, as the first
example here will show. In subsequent examples, sentences from multiple sensors (Radar, GPS, etc.) will
be combined using an NMEA multiplexer to talk to a single listener.
