Connector panel of the BDU
98-175666-A Chapter 3: Interfaces 3-2
3.1.3 Rx/Tx connectors for modem
Connect the Rx and Tx channels of the modem to the Rx and Tx connectors of the BDU
with the 2 supplied Rx/Tx cables (75 Ohm coax, F-F, 1 m).
For step-by-step guidelines how to set up the VSAT modem see Miscellaneous on page C-
1.
3.1.4 NMEA 0183 RJ-45 connector
Connect the ship’s gyro to the RJ45 connector marked NMEA.
To accommodate the gyro cable use the terminal block (DIN Rail Adapter 31-208142-000).
The pin numbers on the adapter are the same as on the RJ45 plug.
Outline
(on the BDU)
Pin
number
Pin function
1 Inner conductor:
10 MHz clock, VSAT Rx/Tx
2 Outer conductor: GND (Shield)
Table 3-3: F connector, Rx and Tx, outline and pin assignment
Outline
(on the BDU)
NMEA
Pin I/O Signal Pin function
1ORS-422LineB(+) Future use
2ORS-422LineA(-) Future use
3IRS-422LineB(+) Heading, balanced
4ORS-232TxD Future use
5 RS-422shield Connect only at one end
6IRS-422LineA(-) Heading balanced
7 RS-232GND Heading, single
8IRS-232RxD Heading, single
Shield PCBground PCBground
Table 3-4: NMEA 0183 RJ-45 connector, outline and pin assignment
Figure 3-2: Gyro input, terminal block