Installation Instructions

25
Data cable wiring diagram: HDS-8 & HDS-10 units
NMEA 0183 wiring (data cable)
• Com 1 (RS-232) uses the yellow wire to transmit, orange wire to
receive and shield (bare) wire for signal ground.
• Com 2 (RS-232) uses the blue wire to transmit, green wire to
receive and shield (bare) wire for signal ground.
Power/Data cable
Data cable
Com 1 to unit
(RS-232)
Com 2 to unit
(RS-232)
To device
To device
Yellow TX
Orange RX
Shield (ground)
Blue TX
Green RX
Shield (ground)
Receive
Receive
Transmit
Transmit
Ground
Ground