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Related Manuals for u-blox C94-M8P Series
Summary of Contents for u-blox C94-M8P Series
- Page 1 RTK Application Board Package User Guide Abstract This document describes the structure and use of the C94-M8P RTK application board package and provides information for evaluating and testing the u-blox NEO-M8P high precision positioning modules. www.u-blox.com UBX-15031066 - R06...
- Page 2 The information contained herein is provided “as is” and u-blox assumes no liability for the use of the information. No warranty, either express or implied, is given, including but not limited, with respect to the accuracy, correctness, reliability and fitness for a particular purpose of the information.
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Page 3: Preface
C94-M8P - User Guide Preface Using this guide This guide assumes, the user has basic computer skills and is familiar with the Windows Graphical User Interface (GUI) and GNSS receiver environments. The following symbols are used in the document to highlight information: A warning symbol indicates actions that could negatively impact or damage the device. -
Page 4: Table Of Contents
C94-M8P - User Guide Contents Preface ..........................3 Using this guide ............................... 3 Warnings and certifications ..........................3 Contents ..........................4 Introduction ........................6 Overview .............................. 6 C94-M8P package includes ........................6 Software requirements ......................... 6 System requirements ..........................6 Specification ......................... - Page 5 C94-M8P - User Guide Schematic ........................21 Appendix .......................... 22 A Glossary ........................22 Radio communication link configuration ..............22 Serial console terminal installation ...................... 25 Notes on FW3.01 HPG1.30 ..................26 D Notes on hardware ....................26 Variants -00 ............................26 D.1.1 Overview .............................
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Page 6: Introduction
The C94-M8P board integrates the NEO-M8P-2 module with both Base Station and Rover functionality. The C94-M8P includes a UHF radio link, allowing for easy setup and fast prototyping. The board also provides connector pins for u-blox C027 and other application boards, enabling communication alternatives using u-blox cellular and short-range technologies. -
Page 7: Specification
C94-M8P - User Guide 2 Specification Parameter Specification Interfaces 1 USB port for GNSS data and power supply 1 RS232, for radio link configuration Connection pins for UART communication (e.g. C027), 3.3 V SMA connector External GNSS antenna and UHF antenna Dimensions 75 mm x 55 mm Weight... -
Page 8: Getting Started
3.2.1 GNSS antenna considerations In order to optimize the benefit of u-blox’s Real Time Kinematic (RTK) technology and achieve high accuracy performance, the placements of the antennas are extremely important. The recommendations for the GNSS antenna used with the system are: The antenna needs to be placed in an open sky environment with unobstrucked visibility to the sky. -
Page 9: Updating Firmware On C94-M8P
Before starting evaluation, please check that the application boards are using the latest firmware. Information on the latest firmware is published on the u-blox web site. For updating the firmware, follow the steps described in chapter 7.1 Firmware Update u-blox 5-8 in u-center User Guide [4]. -
Page 10: Base Station Configuration
C94-M8P - User Guide 3.4.2 Base Station configuration The board that is selected to operate as Base needs to be configured as described below. Setting up RTCM messages A Base device needs to allow RTCM messages 1005 (Station coordinates), 1077 (GPS observations), 1087 (GLONASS observations) and 1230 (GLONASS code-phase biases) to go through the UART1 port on the receiver module. - Page 11 C94-M8P - User Guide Base radio link The radio link needs to be configured on the Base. Use the UBX-CFG-PRT message to set “Protocol in” to “none”, as shown in Figure 3. Figure 3: Configuring Base radio link Base station operation When the NEO-M8P functions as a Base Station, the receiver uses measurements from all available satellites to broadcast corrections.
- Page 12 C94-M8P - User Guide Survey-in mode If the coordinates of the Base Station antenna are not known with very good accuracy, the Base Station should be configured to operate in Survey-in mode. When working in Survey-in mode the Base Station will determine its own position by building a weighted mean of all valid 3D position solutions.
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Page 13: Rover Configuration
C94-M8P - User Guide Figure 6: Base Station moving from Survey-in Mode to Fixed Mode As the Base Station position error is inherited by the Rover absolute position error, users should carefully evaluate the Rover absolute accuracy requirement and setup and choose the Base station mode accordingly. 3.4.3 Rover configuration In its default mode, the Rover will automatically apply the RTCM corrections it receives. -
Page 14: Operation
Additionally, the message “UBX-NAV-RELPOSNED” in u-center shows more details about relative positions and accuracies. For more information, refer to the u-center User Guide [4], the u-blox 8 / u-blox M8 Receiver Description including Protocol Specification [1], and Protocol Specification Addendum for HPG1.30 [5]. -
Page 15: Monitoring The Quality Of The Rtcm Stream
C94-M8P - User Guide Figure 10: UBX-NAV-RELPOSNED in u-center for Rover To achieve the expected accuracy of positioning with u-blox RTK technology, continued carrier phase tracking is important. 4.2.1 Monitoring the quality of the RTCM stream You can monitor the quality of the RTCM stream that the Rover receives. Use UBX-RXM-RTCM message to see station ID, message type and CRC status. -
Page 16: Evaluation Interfaces
Geofence status corresponds to pin 15 and the RTK status corresponds to pin 16 on the NEO-M8P-2 module. Pin 13, pin 14, pin 20 and any of the GND pins are for connecting to u-blox C027 and other application boards. It enables communication alternatives using u-blox cellular and short-range technologies. interfaces... -
Page 17: Battery Connector
C94-M8P - User Guide The pin assignments of the 20-pin J8 connector are shown in Error! Reference source not found.. For more information, see the NEO-M8P Data Sheet [2]. Pin Nr. Assignment V_BAT RTK_STAT, monitor RTK status GEOFENCE_STAT, monitor Geofence status TIMEPULSE RXD_GNSS TXD_GNSS... -
Page 18: Gnss Antenna Connector
C94-M8P - User Guide 5.6.2 GNSS antenna connector The GNSS module SMA connector on each board is used to connect the external active GNSS antenna. This connector is marked with the text “GNSS” on the board. interfaces UBX-15031066 - R06 Advance Information Evaluation Page 18 of 29... -
Page 19: Block Diagram
C94-M8P - User Guide 6 Block diagram Figure 12: Block diagram of the C94-M8P application board diagram UBX-15031066 - R06 Advance Information Block Page 19 of 29... -
Page 20: Board Layout
C94-M8P - User Guide 7 Board layout Figure 13: Board Layout of C94-M8P Application Board layout UBX-15031066 - R06 Advance Information Board Page 20 of 29... -
Page 21: Schematic
C94-M8P - User Guide 8 Schematic Figure 14: Schematics of C94-M8P application board UBX-15031066 - R06 Advance Information Schematic Page 21 of 29... -
Page 22: Appendix
Table 5: Explanation of abbreviations used B Radio communication link configuration By default, users do not need to do any configuration for the Radio communication link. The u-blox default configurations are tested and verified. Users need to take all responsibility for any changes against the default configuration. - Page 23 Table 4: Default configuration for regional variants of the radio module on C94-M8P application boards The u-blox default configurations of the radio module regional variants are tested and verified. Users need to take all responsibility for any changes to the default configuration.
- Page 24 C94-M8P - User Guide Enable the AT command mode by sending sequence “+++” (quickly type “+++” and wait for 1 second) via the serial link. The radio module sends “OK” to indicate entering the AT command mode. Figure 17: Radio module sends “OK” prompt through serial link when AT Command Mode is Enabled In AT command mode, the radio module accepts AT commands and gives response correspondingly.
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Page 25: Serial Console Terminal Installation
C94-M8P - User Guide Commands Description Shows radio version ATI2 Shows board type ATI3 Shows board frequency ATI4 Shows board version ATI5 Shows radio parameters and the current settings. ATI6 Displays timing report of TDM ATI7 Displays signal report of RSSI Exits from AT command mode ATS<n>? Displays radio parameter indicated by index number “<n>“. -
Page 26: C Notes On Fw3.01 Hpg1.30
J1: RS232 – UART M8P/Radio J2: USB – M8P J3: External battery / DC connector J4: Interface to u-blox C027 J6: Debugger interface for radio module J8: Test & Production interface J9: Geofence and RTK status ... -
Page 27: Dimensions
Table 7: Pin assignments of J9 J4 connector The J4 connector is the interface for connecting to u-blox C027 and other application boards. It enables communication alternatives using u-blox cellular and short-range technologies. The pin assignments of this 4-pin connector are shown in Error! Reference source not found.. For more details about C027, see https://www.u- blox.com/product/c027. -
Page 28: Related Documents
C94-M8P - User Guide Related documents u-blox 8 / u-blox M8 Receiver Description Including Protocol Specification (Public version), Docu. No. UBX- 13003221 NEO-M8P Data Sheet, Docu. No. UBX-15016656 NEO-M8P Hardware Integration Manual, Docu. No. UBX-15028081 u-center User Guide, Docu. No. UBX-13005250 Protocol Specification Addendum for HPG1.30, Docu. -
Page 29: Contact
C94-M8P - User Guide Contact For complete contact information, visit us at www.u-blox.com u-blox Offices North, Central and South America Headquarters Asia, Australia, Pacific Europe, Middle East, Africa u-blox America, Inc. u-blox Singapore Pte. Ltd. u-blox AG Phone: +1 703 483 3180...
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