ACR Electronics NAUTICAST inland AIS Installation Manual
Also see for NAUTICAST 2662: User manualInstallation manualManualManualManual
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Contents
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3.5 Sensor Interface DefinitionsAll interface ports of the NAUTICAST comply with IEC-61162-1 / -2 and NMEA-0183 HS 3.0specifications (aligned to RS422 parameters).3.5.1 Talker drive circuitsThe maximum output current is Imax = 50mA on each port. The drive circuit meets therequirements of ITU-T V.11.3.5.2 Listener Receiver CircuitsMultiple listeners may be connected to a single talker. Optional termination resistors(120Ohm) for the input lines are provided in the connection box. The input terminals A, B andC are electrically isolated from the remaining electronics of the listening device.The input impedance is 30kOhm between A and B lines, disregarding the connection oftermination resistors. The minimum input voltage is ±0,3V.The listener's receiver circuit complies with ITU-T V.11.3.5.3 Electrical isolationThere are no direct electrical connections between the signal lines A and B.The signal ground C must not be connected to the ship main ground or power line!This isolation is in accordance with IEC 60945.3.5.4 Maximum voltage on the busThe maximum applied voltage between signal lines A and B and between either line andground C is in accordance with ITU-T V.11. For protection against incorrect wiring and forunintended connection to older TALKER models, all receiver circuit devices are capable ofwithstanding 15 V between both lines and signal ground for an indefinite period.3.5.5 Data transmissionData is transmitted in serial asynchronous form in accordance with IEC 61162-1. The first bitis a start bit, and is followed by data bits, whereby the least significant bit is first.The following parameters are used:– Baud rate 38 400 (bits/s) 9600 (bits/s) 4 800 (bits/s)– Data bits 8 (D7 = 0), parity none– Stop bits 1.Y1-03-0212H11 |
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