Boat connection box NT990HDI
NMEA 2000® network

boat connection box
boat connection box
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Characteristics

Specifications
for boats, NMEA 2000® network

Description

BSH (Germany) type approved for AIS, ECDIS, Radar and Heading Repeater interfacing, the NT990HDI (Heading Data Interface) will convert virtually any Synchro or Step by Step heading input signal to heading data transmitted on 1 (NT990HDI/1) or 2 (NT990HDI/2) isolated NMEA 0183 output channels. The output channels may be independently set for IEC 61162/1 (4800 baud) or IEC 61162/2 (38400 baud). A speed log giving 200 or 400 ppNm may also be connected to the NT990HDI to provide NMEA 0183 speed information to proprietary systems. All inputs to the NT990HDI are Opto-Isolated to eliminate common mode and loading problems. The NMEA 0183 output sentences may be set for heading only ($HEHDT), heading and Rate Of Turn ($HEROT), heading and speed ($VDVHW) or heading, rate of turn and speed. Heading information is permanently displayed on a 4-digit LED display with variable intensity for night viewing whilst built in alarm functions triggered by internal monitors warn of heading input or NMEA output failure. An internal power-monitoring relay provides a volt free normally open (N.O.) or normally closed (N.C.) contact to warn of power supply failure. Contact rating 1A@30Vdc Suitable for 11-40Vdc power supply connection, the NT990HDI may be powered up via the unit mounted ON/OFF keypad or from a remote location via remote power up terminals also provided.

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