u-blox 8 / u-blox M8

1 U- blox 8 / u- blox M8 Receiver descriptionIncluding protocol specificationAbstractThe receiver description including protocol specificationdescribes the firmware features, specifications andconfiguration for u- blox 8 / u- blox M8 high performancepositioning receiver description provides an overview andconceptual details of the supported protocol specification describes the NMEA andRTCM protocols as well as the UBX protocol (version up to , version to , version and version to ) and serves as areference manual. It includes the standard precisionGNSS, Time Sync, Time & Frequency Sync, Highprecision GNSS, ADR and UDR - R26u- blox 8 / u- blox M8 Receiver description - Manual Document Information Title u- blox 8 / u- blox M8 Receiver description Subtitle Including protocol specification , Document type Manual Document number UBX-13003221 Revision and date R26 (304d85c) 25 November 2021 Document status Early production information Document status explanation Objective Specification Document contains target values.

2 Revised and supplementary data will be published later. Advance Information Document contains data based on early testing. Revised and supplementary data will be published later. Early Production Information Document contains data from product verification. Revised and supplementary data may be published later. Production Information Document contains the final product document applies to the following products: Product name Type number Firmware version Product category CAM-M8C CAM-M8C-0-10 SPG Standard Precision GNSS CAM-M8Q CAM-M8Q-0-10 SPG Standard Precision GNSS EVA-M8M EVA-M8M-0-10 SPG Standard Precision GNSS EVA-M8M EVA-M8M-1-10 SPG Standard Precision GNSS EVA-M8Q EVA-M8Q-0-10 SPG Standard Precision GNSS MAX-M8C MAX-M8C-0-10 SPG Standard Precision GNSS MAX-M8Q MAX-M8Q-0-10 SPG Standard Precision GNSS MAX-M8W MAX-M8W-0-10 SPG Standard Precision GNSS NEO-M8M NEO-M8M-0-11 SPG Standard Precision GNSS NEO-M8N NEO-M8N-0-12 SPG Standard Precision GNSS NEO-M8Q NEO-M8Q-0-12 SPG Standard Precision GNSS NEO-M8Q NEO-M8Q-01A-10 SPG Standard Precision GNSS NEO-M8J NEO-M8J-0-11 SPG Standard Precision GNSS LEA-M8S LEA-M8S-0-10 SPG Standard Precision GNSS SAM-M8Q SAM-M8Q-0-10 SPG Standard Precision GNSS ZOE-M8G ZOE-M8G-0-11 SPG Standard Precision GNSS ZOE-M8Q ZOE-M8Q-0-10 SPG

3 Standard Precision GNSS ZOE-M8B ZOE-M8B-0-11 SPG Standard Precision GNSS EVA-8M EVA-8M-0-10 SPG Standard Precision GNSS MAX-8C MAX-8C-0-10 SPG Standard Precision GNSS MAX-8Q MAX-8Q-0-10 SPG Standard Precision GNSSUBX-13003221 - R26 Early production informationPage iiu- blox 8 / u- blox M8 Receiver description - Manual NEO-8Q NEO-8Q-0-11 SPG Standard Precision GNSS NEO-M8P NEO-M8P-0-11 HPG High Precision GNSS NEO-M8P NEO-M8P-2-11 HPG High Precision GNSS NEO-M8P NEO-M8P-0-12 HPG High Precision GNSS NEO-M8P NEO-M8P-2-12 HPG High Precision GNSS NEO-M8L NEO-M8L-0-10 ADR / / / Dead Reckoning NEO-M8L NEO-M8L-0-11 ADR / / / Dead Reckoning NEO-M8L NEO-M8L-0-12 ADR / / / Dead Reckoning NEO-M8L NEO-M8L-04B-00 ADR / / Dead Reckoning NEO-M8L NEO-M8L-05B-00 ADR / Dead Reckoning NEO-M8L NEO-M8L-06B-00 ADR Dead Reckoning NEO-M8L NEO-M8L-02A-11 ADR / / / Dead Reckoning NEO-M8L NEO-M8L-03A-12 ADR / / / Dead Reckoning NEO-M8L NEO-M8L-04A-00 ADR / / Dead Reckoning EVA-M8E EVA-M8E-0-11 UDR / / / Dead Reckoning NEO-M8U NEO-M8U-0-10 UDR / / / Dead Reckoning NEO-M8U NEO-M8U-04B-00 UDR / / Dead Reckoning NEO-M8U NEO-M8U-05B-00 UDR / Dead Reckoning NEO-M8U NEO-M8U-06B-00 UDR Dead Reckoning NEO-M8T NEO-M8T-0-11 TIM Timing LEA-M8T LEA-M8T-0-10 TIM Timing LEA-M8T LEA-M8T-1-00 TIM Timing LEA-M8F LEA-M8F-0-00 FTS Timingu- blox reserves all rights to this document and the information contained herein.

4 Products, names, logos and designsdescribed herein may in whole or in part be subject to intellectual property rights. Reproduction, use, modification ordisclosure to third parties of this document or any part thereof without the express permission of u- blox is information contained herein is provided "as is" and u- blox assumes no liability for the use of the information. Nowarranty, either express or implied, is given, including but not limited, with respect to the accuracy, correctness, reliabilityand fitness for a particular purpose of the information. This document may be revised by u- blox at any time. For mostrecent documents, please visit 2021, u- blox is a registered trademark of u- blox Holding AG in the EU and other - R26 Early production informationPage iiiu- blox 8 / u- blox M8 Receiver description - ManualTable of Document Firmware and Protocol How to Determine the Version and the Location of the Decoding the Boot Screen (for Protocol Version 17 and Below).

5 Decoding the Boot Screen (for Protocol Version from 18 to ).. Decoding the output of UBX-MON-VER (for Protocol Version 17 and below).. Decoding the output of UBX-MON-VER (for Protocol Version from 18 and ).. How to Determine the Supported Protocol Version of the u- blox u- blox 8 / u- blox M8 Firmware and Supported Protocol Receiver Configuration Organization of the Configuration Permanent Configuration Storage u- blox Receiver Default Save-on-Shutdown Concurrent GNSS Major Augmentation Switching between Configuring QZSS SBAS Configuration Settings SBAS (Satellite Based Augmentation Systems).. SBAS SBAS QZSS L1S SLAS Configuration Settings QZSS L1S SLAS (Sub-meter Level Augmentation Service).. QZSS L1S SLAS QZSS L1S SLAS IMES IMES Navigation Configuration Settings Platform Navigation Input Navigation Output Speed (3-D)

6 Low-pass - R26 Early production informationPage ivu- blox 8 / u- blox M8 Receiver description - Course over Ground Low-pass Low-speed Course Over Ground Static Freezing the Course Over Degraded 2D Geodetic Coordinate Systems and Clocks and Receiver Local Navigation iTOW GNSS Time UTC Leap Real Time GPS-only Date Broadcast Navigation Parsing Navigation Data GPS L1 Galileo Serial Communication Ports TX-ready Extended TX UART USB DDC Read Write SPI Maximum SPI clock Read Back-To-Back Read and Write How to change between - R26 Early production informationPage vu- blox 8 / u- blox M8 Receiver description - Manual12 Multiple GNSS assistance (MGA).. Assistance AssistNow Host AssistNow Online Flow Service Multiple AssistNow Service Multiple Time, Position and Flash-based AssistNow Host-based AssistNow Preserving Information During AssistNow Benefits and Power Continuous Power Save Peak current Power On/Off EXTINT pin control when Power Save Mode is not Measurement and navigation rate with Power Save Power mode Forcing a Receiver Receiver Status Input/Output Jamming/Interference Jamming/Interference Monitor (ITFM).

7 6916 Spoofing - R26 Early production informationPage viu- blox 8 / u- blox M8 Receiver description - Manual17 Signal Attenuation Remote Time GNSS time Time pulse Configuring time pulse with Example Example Odometer Odometer Resetting the Setting the logging system Information about the Command message Data Setting up the data Geofence state Using a PIO for Geofence State Time Mode Fixed Time & Frequency Sync (FTS).. Example use Stand-alone synchronization Oscillator control via - R26 Early production informationPage viiu- blox 8 / u- blox M8 Receiver description - Oscillator control via directly-connected External (coherent) Synchronization Manager Oscillator and source FTS device Output and Top Of Second (TOS) Message transmission time slot reservations on host Example RTK Mode Reference Station Mode Rover Mode Moving Baseline RTK MB Reference MB Rover Expected Automotive Dead Reckoning (ADR).

8 Solution GAWT: Gyroscope, Accelerometer and Wheel Tick Installation IMU-mount Sensor Accelerometer Gyroscope Wheel-Tick/Speed Sensor Sensor Time ADR System Enabling/Disabling Fusion Recommended Fusion Filter Accelerated Initialization and Calibration Automatic IMU-mount Navigation Sensor Data Raw Sensor Data Receiver Startup and Untethered Dead Reckoning (UDR).. Installation IMU-mount Sensor Accelerometer - R26 Early production informationPage viiiu- blox 8 / u- blox M8 Receiver description - Gyroscope Sensor Time UDR System Enabling/Disabling Fusion Recommended Fusion Filter Accelerated Initialization and Calibration Automatic IMU-mount Navigation Sensor Data Raw Sensor Data Receiver Startup and High Navigation Rate (HNR).. NMEA Protocol Message Talker Protocol Satellite Latitude and longitude Position fix Multi-GNSS Output of invalid/unknown Messages Standard - R26 Early production informationPage ixu- blox 8 / u- blox M8 Receiver description - PUBX CONFIG (PUBX,41).

9 POSITION (PUBX,00).. RATE (PUBX,40).. SVSTATUS (PUBX,03).. TIME (PUBX,04)..16732 UBX UBX Protocol Key UBX Frame UBX Payload Definition Structure Reserved Undefined Message Number UBX UBX Message Polling UBX Class UBX Messages UBX-ACK (0x05).. UBX-ACK-ACK (0x05 0x01).. UBX-ACK-NAK (0x05 0x00).. UBX-AID (0x0B).. UBX-AID-ALM (0x0B 0x30).. UBX-AID-AOP (0x0B 0x33).. UBX-AID-EPH (0x0B 0x31).. UBX-AID-HUI (0x0B 0x02).. UBX-AID-INI (0x0B 0x01).. UBX-CFG (0x06).. UBX-CFG-ANT (0x06 0x13).. UBX-CFG-BATCH (0x06 0x93).. UBX-CFG-CFG (0x06 0x09).. UBX-CFG-DAT (0x06 0x06).. UBX-CFG-DGNSS (0x06 0x70).. UBX-CFG-DOSC (0x06 0x61).. UBX-CFG-ESFALG (0x06 0x56)..200 UBX-13003221 - R26 Early production informationPage xu- blox 8 / u- blox M8 Receiver description - UBX-CFG-ESFA (0x06 0x4C).. UBX-CFG-ESFG (0x06 0x4D).

10 UBX-CFG-ESFWT (0x06 0x82).. UBX-CFG-ESRC (0x06 0x60).. UBX-CFG-GEOFENCE (0x06 0x69).. UBX-CFG-GNSS (0x06 0x3E).. UBX-CFG-HNR (0x06 0x5C).. UBX-CFG-INF (0x06 0x02).. UBX-CFG-ITFM (0x06 0x39).. UBX-CFG-LOGFILTER (0x06 0x47).. UBX-CFG-MSG (0x06 0x01).. UBX-CFG-NAV5 (0x06 0x24).. UBX-CFG-NAVX5 (0x06 0x23).. UBX-CFG-NMEA (0x06 0x17).. UBX-CFG-ODO (0x06 0x1E).. UBX-CFG-PM2 (0x06 0x3B).. UBX-CFG-PMS (0x06 0x86).. UBX-CFG-PRT (0x06 0x00).. UBX-CFG-PWR (0x06 0x57).. UBX-CFG-RATE (0x06 0x08).. UBX-CFG-RINV (0x06 0x34).. UBX-CFG-RST (0x06 0x04).. UBX-CFG-RXM (0x06 0x11).. UBX-CFG-SBAS (0x06 0x16).. UBX-CFG-SENIF (0x06 0x88).. UBX-CFG-SLAS (0x06 0x8D).. UBX-CFG-SMGR (0x06 0x62).. UBX-CFG-SPT (0x06 0x64).. UBX-CFG-TMODE2 (0x06 0x3D).. UBX-CFG-TMODE3 (0x06 0x71).. UBX-CFG-TP5 (0x06 0x31).. UBX-CFG-TXSLOT (0x06 0x53).. UBX-CFG-USB (0x06 0x1B).