User`s guide

4000/5000 Modems’ User Guide

GPS Configuration

Select a protocol type, TAIP or NMEA.

Populate the corresponding Acquisition Time (sec) and Reporting frequency

(sec).Reporting Timer can not carry a value smaller than the Acquisition Timer.

Typically, both timers should be set to the same value. If not, the modem reports the

number of fixes it has acquired before the reporting timer has expired.

In case of NMEA, select the NMEA messages to be transmitted. A user can select which

messages to be reported and set the reporting based on time interval. It is important

to note that in NMEA standards there is no unique identifier for the NMEA message. If

a unique identifier is necessary, the user has to either utilize TAIP GPS reporting

protocol or leverage the AVL firmware capabilities of the modem. By default, the

modem reports GGA and VTG messages. Refer to Trimble NMEA documentation for

format of reported NMEA messages.