Installation and Operation Manual S400 series
15
3.1. NMEA 0183 interfacing
The Depth S400 display has one NMEA 0183 input and one output, non shielded. The
NMEA 0183 frame format recognized by the depth display complies with the V3.01
standard of January 2002.
3.1.1. NMEA 0183 input interface
The NMEA 0183 input interface can simultaneously acquire the physical measurement
listed in the table below. To avoid confusing the same data from different frames, a 2-
level priority management algorithm is used to prioritize some frames over others.
Example: if the frames DPT and DBT are received, only the DPT frame will be decoded
to receive the depth data.
Frames used
No
NMEA data
Priority 1
Priority 2
1 Depth
DPT DBT
Note: The data from the NMEA input are displayed with the
icon.
3.1.2. NMEA 0183 output interface
The depth S400’s NMEA output emits at a speed of 1 Hz the 5 frames below:
No
NMEA frames
Data transmitted
1 DPT
Depth
--
2 DBT
Depth
--
Note: The NMEA 0183 output does not repeat the frames received on its input.
3.2. Mounting and connections
3.2.1. Mounting the Depth S400 unit
The Depth unit must be mounted in a visible location and protected from any risk of
shocks. It should be placed more than 10cm from a compass and more than 50cm
from radio or radar antenna, far from all engines, fluorescent light, alternators and
radio or radar transmitters. It should be accessible from the rear; minimum depth
cabin side 50mm. The rear panel of the unit should be protected from humidity. The
mounting surface should be flat and of thickness less than 20mm.
3 Installation
