Navman LA000578A Manual

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Navman LA000578A Manual Manual pdf 9 page image

9LA000578A © 2006 Navman New Zealand. All rights reserved. Proprietary information and specifications subject to change without notice.3.3 Function LEDsThere are four LEDs on the front panel of the development unit, indicating the status of aselection of basic functions. The functions of the LEDs are described in the sections that follow.1PPS Power AUX GPIOFigure 3-3 Function LEDs on front panelNote that some early versions of the evaluation unit have different LED legends.3.3.1 1PPSThis LED will flash on with each transition of the 1 PPS (Pulse Per Second) output of the GPSreceiver. The 1PPS LED will begin flashing when the receiver is tracking a satellite.3.3.2 PowerThis LED indicates presence of primary DC power to the module.3.3.3 AUXThis LED shows activity on the auxiliary serial RS232 port (DGPS).3.3.4 GPIOThis LED indicates the state of GPIO15 , which can be set via DIP switch 2. This LED is lit whenswitch 2 is set to on. (Note that switch 2 has no effect when using standard Jupiter 30 software.)3.4 Clock out connectorThe Clock out connector provides an interface for all associated timing signals with the module.It provides the user access to the Time Mark (1PPS) signal. The pinout connections aredescribed in Table 3-2, and illustrated in Figure 3-4.Pin number Function1 not used2 inverted 1PPS signal3 normal 1PPS signal4 groundTable 3-2 Pin functions of the clock out connector