sparkfun ZED-F9P Hook-Up Manual page 16

RTK: By default, the RTK is closed. Cutting this jumper will disable the RTK LED. This LED indicates when
there is an RTK fix.
GEO: By default, the GEO is closed. Cutting this jumper will disable the GEO LED. This LED is used for
geofencing applications.
PPS: By default, the PPS is closed. Cutting this jumper will disable the PPS LED whenever a position lock
has been achieved.
SPI: By default, the SPI is open. Closing SPI with solder enables the SPI interface and disables the UART
2
and I C interfaces. USB will still function.
Note: The MEAS jumper has PTH pins. You will need to disconnect the PTH pads on the top side of the
board before you are able to measure the current from the bottom of the board effectively.
Control Pins
These pins are used for various extra control of the ZED-F9P:
TX READY: Transmit ready output pin. Can be configured using U-Center to indicate that the transmit buffer
is full and ready to be transmitted. This is connected to D0 on the MicroMod Processor Board.
ZED RESET: Reset input pin. Pull this line low to reset the module.
SFBOOT: Safeboot input pin. This is required for firmware updates to the module and generally should not
be used or connected.
INT: Interrupt input/output pin. Can be configured using U-Center to bring the module out of deep sleep or to
output an interrupt for various module states.
PPS: Pulse-per-second output pin. Begins blinking at 1Hz when module gets basic GPS/GNSS position
lock.