Installation guide

LMU Users Guide

V1.0.6 December 10 2009

- 68 - CalAmp Proprietary & Confidential

Unlike the ODO message, general debug does not need to be enabled.

9.5.3 GPS Debug Output

GPS Debug Output enables a variety of debug messaging the LMU receives from its GPS

receiver. This messaging should only be enabled when requested by a member of CalAmp’s

support team.

It is enabled by setting bit 2 of S-Register 126 and enabling general debug. That is:

AT$APP PARAM 1024,6,4,4

ATS125=3 (or ATS125=7)

It is disabled by clearing bit 2 or turning off general debug.

AT$APP PARAM 1024,6,4,0

ATS125=0

9.6

It is possible to have the LMU produce an LM Direct event report every time the GPS

receiver supplies a new GPS position. How often this occurs is based on the GPS Update

rate.

Over-The Air Real-Time GPS Updates

The LM Direct Event Report is sent using the Unacknowledged service and goes to the

current Inbound Address and Port in use by the LMU. This feature is enabled by setting bit

4 of S-Register 126.

AT$APP PARAM 1024,6,16,16

This feature is disabled by clearing bit 4

AT$APP PARAM 1024,6,16,0

This feature is disabled by default.