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4

5

The Prototyping Area

In addition to its evaluation functions, the board may also be used for

actual product development. It features a prototyping area to facilitate the

addition of application-specific circuitry. The prototyping area contains a

large area of plated through-holes so that external circuitry can be placed

on the board. The holes are set at 0.100” on center with a 0.040” diameter,

making it easy to add most industry-standard SIP and DIP packages.

External circuitry can be easily interfaced with the receiver through the

breakout header (J3) on the upper right of the prototyping area. A switch

controls the routing of data into the receiver module. By default the switch

is set for operation with the on-board USB module. When communicating

with the module from the prototyping area this switch should be set

to Prototype Control. At the bottom of the prototyping area is a row

connected to ground and at the top is a row connected to the 3.3V power

supply.

headroom available for additional circuitry. If added circuitry requires a

higher current, the user must add an additional regulator to the prototype

area or power the board from an external supply.

Ground Bus

+3 Volt Bus

Figure 4: The Development Board Prototyping Area

Initial Setup

Unpack the development system and install the AAA and coin-cell

batteries. Connect the external GPS antenna. The power switch selects

between the battery pack or USB power if the board is plugged into a

USB bus. To use the display, turn the OLED display power switch on. The

development board is now ready for use. After turning on the power, the

module determines its current position. Please note, the time required for

an initial fix or after long periods of storage is considerably greater than in

subsequent operation. Please refer to the module’s data guide for complete

information regarding Time-To-First-Fix (TTFF). To protect the display and

extend its life, turn off the display before turning off the board.

Troubleshooting

If the boards fail to work out of the box, then try the following:

• Check the batteries to make sure they are not dead

• Check to make sure that the power switch is in the correct position

• Check that the antenna is installed correctly

• Check that the data routing switch is set appropriately

If all of these appear to be in order, please call +1 800 736 6677 or e-mail

techsupport@linxtechnologies.com for technical support.

Data Routing

Switch