Observator Instruments OMC-140, Installation Manual

Page: 13 / 68

OMC-140 Installation Manual Page 13
5 Terminals
5.1 Sensor connection
The OMC-140 display has 2 isolated NMEA inputs, both with power output available.
The power outputs have a configurable watchdog option, whenever no valid signal is received for 10s
(default setting), the power will be interrupted to reset the attached sensor.
Use a NMEA multiplexer like Observator MeteoLink whenever you require more NMEA inputs.
The display has 1 NMEA output.
All NMEA and Mains terminals are suitable for wires up to 2.5mm
2
.
5.2 Main connections
LAN
For future use
1
power out GND
2 power out +15Vdc (watchdogged)
3 NMEA input 1 A
4 NMEA input 1 B
5
power out GND
6 power out +15Vdc (watchdogged)
7 NMEA input 2 A
8 NMEA input 2 B
9
NMEA output A
10 NMEA output B
11
Output shield connection*
USB
Micro USB connection for advanced
programming and firmware updates.
100 .. 240 V AC
LED Function Power
(Green connector)
1 Power input 1
2 Data input 1 Optional 24VDC
3 Power input 2
(Black connector)
4 Data input 2 see chapter 5.4
5 Data output
*Shield connection is for output only, input shield should never be connected to the display!