LT-1000 User & Installation Manual
Connecting
Lars Thrane A/S
www.thrane.eu
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NMEA 2000 Installation
The LT-1000 NRU can be configured to ‘Open’ or ‘Terminated’. The LT-1000 NRU is delivered with a NMEA
2000 screw-in connector, which is used to interconnect the communication cable to a NMEA 2000 backbone.
The Dip-switch on the LT-1000 NRU can be configured to either ‘Open’ or ‘Terminated’, see DIP-switch and
LEDs on page 21 (factory default: ‘Open’). Figure 37 and Figure 38 are illustrating two options for connecting
the LT-1000 NRU to a NMEA 2000 network (backbone).
NMEA 2000 (‘Open’)
If the LT-1000 NRU is installed as illustrated in Figure 37, then the DIP-switch must be configured to ‘Open’.
For correct configuration of the DIP-switch, see
DIP-switch and LEDs
on page 21. The LT-1000 NRU is
connected to the NMEA 2000 backbone using a drop-cable.
NOTE:
Make sure that the communication cable, delivered together with the LT-1000 NRU, is
shortened to a maximum length of 6 meters as defined in the NMEA 2000 standard for a drop
cable.
NMEA 2000 (‘Terminated’)
If the LT-1000 NRU is installed as illustrated in Figure 38, then the DIP-switch must be configured to
‘Terminated’. For correct configuration of the DIP-switch, see DIP-switch and LEDs on page 21 (factory
default: ‘Open’). The LT-1000 NRU is connected to the NMEA 2000 using a standard backbone cable.
Details on how to connect the communication cable with the NMEA 2000 screw-in connector, see
Connecting to NMEA 2000 on page 23.
F
IGURE
37:
LT-1000
NRU
CONNECTED TO A
NMEA
2000
BACKBONE
WITH THE DIP
-
SWITCH CONFIGURED
TO
‘
OPEN
’.
T
HE
NMEA
2000
SCREW
-
IN CONNECTOR IS NOT ILLUSTRATED IN THIS FIGURE
.
Drop Power
Cable (+ / GND)
Ter.
Power-source
NMEA 2000
Device
LT-1000
NRU
Ter.
F
IGURE
38:
LT-1000
NRU
CONNECTED TO A
NMEA
2000
BACKBONE
WITH THE DIP
-
SWITCH CONFIGURED TO
‘
TERMINATED
’.
T
HE
NMEA
2000
SCREW
-
IN CONNECTOR IS NOT ILLUSTRATED IN THIS FIGURE
.
Drop Power
Cable (+ / GND)
Ter.
Power-source
NMEA 2000
Device
LT-1000
NRU
Cable length ≤ 6 m.
(20 ft.) according to
the NMEA 2000
standard
Cable length ≤ 100 m.
(328 ft.) according to
the NMEA 2000
standard
Summary of Contents for LT-1000 NRU
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