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NMEA Receiver

The NMEA Receiver module receives the position records such as NMEA positions from the connected station and, in baseline mode, uses them to compute a vector from a selected base station to the connected station. It makes the data available to other modules, such as the NMEA Engine, raw storage and routing modules.

Input data

Many modern receiver brands send out their data not only in a receiver-specific data format that needs a specific decoder. They often can process their position and broadcast them in the receiver-independent NMEA format, either as GGA or as GGK records.

In a monitoring approach, the module receives the positions as an RTPD data stream from a connected RTPD Server. In this case, the incoming positions are considered to be absolute positions of the selected station.

Adding the module

When the module is first being added, the NMEA Receiver Properties dialog appears. It lets you define and select NMEA Receiver module configurations. Each configuration specifies the following:

Status of the NMEA Receiver module

In the Tree view, each NMEA Receiver module is represented by its configuration name and a status-identifying icon.

Icon NMEA Receiver module

Connected and receiving data.

Alarm status: No data from the NMEA Receiver.

For more information, the module displays the NMEA Receiver Status module-view page.

Alarming

With alarming activated, the NMEA Receiver module triggers alarms, if one of the following happens:

Dependent modules

Logging into the database

All connection events are logged into the central database. The database contains the following tables, which can be filled in by several modules types:

Table name

Contents

More information

DriverConnections

Settings and events of incoming and outgoing connections.

One row for each module and each period it is connected.

DataOutages

Periods of missing data.

One row for each event. Logging into the database starts after a module-depending minimum data outage period.

See Also

Reporting - Trimble Report Generator

NMEA Engine

Router

Device Manager

GNSS Receiver

In This Chapter

The NMEA standard

NMEA Receiver Properties dialog

Select a Station dialog

Select a Base dialog

NMEA Receiver Status View