Konsberg AIS 200, Installation Manual

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Kongsberg AIS 200 Installation Manual, rev. 2 Appendix B - Digital interface IEC 61162-1
10. APPENDIX B - DIGITAL INTERFACE IEC
61162-1
10.1 Hardware
The recommended wiring (the figures below are excerpts from IEC 61162-2, ed. 1) is as
shown on the drawings. The A, B and C designation correspond with the data signals as
shown on figure on page 25. There may be several listeners (receivers) but only one talker
(transmitter). For long lines we recommend to use a terminating resistor (120 Ohm between
A' and B' at the receiving end). Avoid stubs or make them as short as possible. The common
wire designated "C" is the signal ground reference and this wire shall be isolated from the
outer shielding. The outer cable shield shall be continuous (unbroken) through the
installation, but shall not be terminated to any part of the receiver.
Shielded twisted pair cable with third-wire is shown below. The common "C" wire may be
one wire of a pair of another port's common connection wire "C", if they have the same
destination.
Excerpt from 61162-2, ed. 1 (NMEA 0183 version 3.0, 3.5.2).
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