Linx Technologies MDEV-GPS-R4 - Manual (Page 7)

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Initial Setup
Unpack the development system and install the AAA and coin-cell
batteries. Connect the external GPS antenna. The power switch can select
between the battery pack / DC power jack or USB 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 will determine its current position. Please note, the time
required for an initial fix or after long periods of storage will be 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 the display off before turning the board
off.
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
• Make sure that the jumper is set correctly
• Make sure that a jumper is installed on the Module Power Header
• Make sure that the batteries are not dead
If all of these appear to be in order, please call +1 800 736 6677 or e-mail
[email protected] for technical support.
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 to the
board.
External circuitry can be easily interfaced with the R4/F4 receiver through
the breakout header (J7) to the right of the prototyping area. A jumper
shunt has been provided to control the routing of data into the GPS
module. By default the jumper is set for operation with the on-board USB
module. When communicating with the GPS module using your own