Raymarine 33STV, User Manual, Page: 23 / 62

The RF cables from the multiswitch connect to either the LNB , ANT ,
or Satellite In connectors on the rear of the IRDs.
Connect USB cables to the IRD USB ports on the ACU to the USB
port on the IRDs.
Refer to the relevant Manufacturer’s handbook for details on
configuring your IRDs.
Up to six IRDs can be connected to the ACU and every IRD can be
a master, which can change the target satellite freely by selecting
a channel.
STV with NMEA 0183 GPS
NMEA
connector
D1
17
26
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You can improve the tracking accuracy of your Raymarine STV
system by using the supplied 2 pin connector (as above), to connect
your STV system directly to your boat’s NMEA 0183 GPS system.
You will need to provide:
• a length of cable suitable for connecting to your GPS antenna.
• a suitable connector block.
Connecting STV to NMEA 0183 GPS
With the system powered OFF, connect an NMEA feed to the ACU
for GPS positioning information, refer to the following illustration
for reference:
Red (12 - 32 V /+)
Yellow (NMEA out /+)
Brown (RTCM in /+)
Green (NMEA in /+)
Shield (0V/ ground / -)
GPS antenna
cable
Connector
block
GPS antenna
cable
Additional cable
Pin 1
Pin 2
D1
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1. At a suitable point, cut your GPS antenna cable.
2. Strip each wire in the GPS and additional cable ready for the
connector block.
3. Connect stripped GPS wires to the connector block, matching
the wires on either side.
4. Put the NMEA OUT wire (yellow in the illustration) and ground
wire into the connector block with the corresponding GPS
antenna wires, as in the illustration.
5. Secure all connections in the connector block.
6. Connect and secure the free end of the additional cable in the 2
pin plug, so that:
i.
NMEA OUT (+) connects to pin 1.
ii. Ground (-) connects to pin 2.
7. Connect the 2 pin plug to NMEA on the rear of the ACU.
8. Switch on the STV system.
Installation 23