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AIRMAR

PB100 WeatherStation Technical Manual revision 1.007

1. Introduction

This document is a supplement to the Airmar PB100 WeatherStation Owner's Guide.

This document provides a detailed description of the communications protocol for both

transmitted and received NMEA 0183 sentences used by the PB100 WeatherStation.

At this writing there are two models of the WeatherStation: the PB100 and the LB100.

These are identical, except that the LB100 does not include the integrated GPS, compass,

and tilt sensor circuitry. This document covers both models. Some of the transmitted

NMEA sentences described in this document are not available on the LB100.

For further information about the NMEA 0183 protocol, refer to the document, NMEA

0183 Standard for Interfacing Marine Electronic Devices, v3.01, available from the

National Marine Electronics Association (www.nmea.org).

2. NMEA 0183 Interfaces

The Airmar WeatherStation has a single standard NMEA 0183-compliant output channel,

and a single standard NMEA 0183-compliant input channel. The unit transmits standard

NMEA 0183 sentences on its output channel. It also recognizes standard and proprietary

NMEA 0183 sentences received on its input channel. The standard baud rate for both

input and output channels is 4800 baud, though if desired this may be increased to 38400

baud via a proprietary command.

The transmitted NMEA 0183 sentences are described in section 2.1. Received NMEA

0183 sentences and proprietary commands are described in section 2.2.

2.1. Transmitted NMEA 0183 Sentences

By default, only certain NMEA sentences are enabled for transmission. Other sentences

may be enabled individually for transmission via commands sent to the input channel.

The standard transmission interval for most of the transmitted sentences is once per

second. However, in models that include an integrated GPS, if every sentence were

enabled for transmission, there would not be enough bandwidth in the output channel at

See the $PAMTC,BAUD command.

See the $PAMTC,EN command.

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