Navman la000507 User Manual

DIP switch 3 interfaces with the BOOT pad of the module and allows the user to upgrade the

Flash memory. For normal operation the switch should be set to OFF. To boot from the serial

port the switch should be set to ON. This switch is enabled by the internal switch SW3.3.

3.2.4 DIP switch 4 – GPIO1/W_TICKS input

DIP switch 4 interfaces to the GPIO1/W_TICKS pad of the module. The switch is typically

OFF, but has no effect with the standard module’s software. This switch can be enabled by the

internal switch SW3.4.

3.2.5 DIP switch 5 – RTC backup power enable

DIP switch 5 provides control of the RTC backup power to the module. When set to the ON

position, the RTC backup power is applied to the module, allowing the RTC and SRAM to

continue being powered when the primary source is removed. The jumper JB5/6 must also be

in place for the backup power to be supplied. This power supply will be supplied to the module

even with the main power switch in the OFFposition.

3.2.6 DIP switch 6 – Antenna preamp power select (3.3 V or 5/12 V)

DIP switch 6 provides control of the antenna preamp voltage applied to the module. The

position of the switch determines the supply voltage (OFF = 3.3 V, ON = 5/12 V). The positions

of switches 7 and 8 also need to be considered when using the preamp function.
Note: the supplied antenna is a 3.3 V type.

3.2.7 DIP switch 7 – Antenna preamp power select (5 V or 12 V)

DIP switch 7 also controls the antenna preamp voltage applied to the module. If switch 6 is ON,

then switch 7 will determine the supply voltage to the active antenna (OFF = 12 V, ON = 5 V).

3.2.8 DIP switch 8 – Antenna preamp power enable

DIP switch 8 provides the ability to enable/disable the antenna preamp voltage to the module

depending on the antenna being used. Typically this switch is ON, enabling 3 V to be applied to

the active antenna supplied with the kit.

3.3 Function LEDs

There are four LEDs on the front panel of the Development Unit, indicating the status of a

selection of basic functions. The functions of the LEDs are described in the sections that follow.

1PPS Power AUX GPIO

Figure 3-3 Function LEDs on front panel

Note that some early versions of the Development unit have different LED legends.

3.3.1 1PPS

This LED will flash ON with each transition of the 1 PPS (Pulse Per Second) output of the GPS

receiver. The 1PPS LED will begin flashing when the receiver is tracking a satellite.

3.3.2 Power

This LED indicates presence of primary DC power to the module.

3.3.3 AUX

This LED shows activity on the auxiliary serial RS232 port (DGPS).

3.3.4 GPIO

This LED indicates the state of GPIO15 , which can be set via DIP switch 2. This LED is lit

when switch 2 is set to ON. (Note that switch 2 has no effect when using standard Jupiter 20

software.)