Navman la000578a User Manual

3.2.3 DIP switch 3 – BOOT from serial mode

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 off position.

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 switch

position determines the supply voltage (off = 3.3 V, on = 5/12 V).

Switch 6 should be left in the

3.3 V (off) position. 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).

Switch 7 is not operational when switch 6 is in the 3.3 V (off) position.

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.

Figure 3-5 Internal layout of the development unit

ON/OFF switch

configuration DIP

switch

function LEDS

JB5/6

reset switch

serial port 1

serial port 2

timing connector

DR connector

DC power

JB10/11/12

voltage selection

switch (3.3V or 5V)

JB1/2

JB3/4

JB13/14/15

test points E1 to E9

JB16/17

SW3

all off except SW3.3