u-blox C94-M8P User Manual

Also see for C94-M8P: User guide

Contents

C94-M8P - User GuideUBX-15031066 - R07 Early Production Information Evaluation interfacesPage 30 of 47The pin assignments of the 20-pin J8 connector are shown in Table 2. For more information, see the NEO-M8P DataSheet [2].Pin Nr. Assignment1 V_BAT2 GND3 GND4 RTK_STAT, monitor RTK status5 GEOFENCE_STAT, monitor Geofence status6 TIMEPULSE7 GND8 GND9 RXD_GNSS10 TXD_GNSS11 GND12 GND13 RXD_EXT14 TXD_EXT15 GND16 GND17 SAFEBOOT_N18 EXTINT19 RESET_N20 RADIO_OFF, apply 3.3 V to turn off the radio modem for external UART communication.Table 2: Pin assignments of J8 connector6.4 Battery connectorThere is a 2-pin battery connector available on the C94-M8P for connecting the board to an external battery or DCsupply. This uses a standard 5.05 mm pitch 2-pin connector for supplying a 3.7-20 VDC source or external battery.The pin assignments of this 2-pin connector are shown in Table 3.Pin Nr. Assignment1 V_BAT, battery “+”2 GND, battery “-”Table 3: Pin assignments of battery connector6.5 LEDThe Blue LED (DS2), mounted on the C94-M8P application board, shows the time pulse output signal from theNEO-M8P-2 module. The LED starts flashing one pulse per second during a GNSS fix. If there is no GNSS fix, the LEDwill light up without flashing.The Green LED (DS1) indicates the RTK status. The LED flashes in float mode and stays on in fix mode. The LED is offwhen there is no RTK fix.6.6 Antenna connectors6.6.1 Radio antenna connectorThe radio antenna SMA connector on each board is used for connecting a UHF antenna. This connector is markedwith the text “UHF” on the board.