Emlid REACH M2 User Documentation
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Emlid REACH M2 User Documentation

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REACH M2/M+
USER DOCUMENTATION
Firmware version 30
Emlid Flow app version 8.1 or newer
June 15, 2023
©2023 Emlid Tech Kft

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  • Page 1 REACH M2/M+ USER DOCUMENTATION Firmware version 30 Emlid Flow app version 8.1 or newer June 15, 2023 ©2023 Emlid Tech Kft...

  • Page 2: Table Of Contents

    1.1.6 Update Reach Firmware ......1.2 Connecting to Reach M2/M+ ......
  • Page 3 4.1.1 Overview ........4.1.2 Reach M2/M+ hardware setup ......
  • Page 4 9.2.4 macOS installation ....... . 9.2.5 Reflash your Reach M2/M+ ......
  • Page 5 9.6.2 Enable raw data debug option ......102 9.7 How to restore initial settings ......103 9.7.1 Overview .

  • Page 6: Before You Start

    To do that, you will need Reach itself, an external GNSS antenna, a Wi-Fi network with internet access and a smartphone or tablet. 1.1.1 Download Emlid Flow To manage Reach M2/M+, download the Emlid Flow app on your mobile device Android mobile device.

  • Page 7: Power Up Reach M2/M

    • Open a list of Wi-Fi networks on your smartphone or tablet. • Connect to a network named reach:xx:xx. • Type network password: emlidreach. Once you successfully connected to Reach’s hotspot, you can go to Emlid Flow and set up connection to your Wi-Fi network.

  • Page 8: Set Up Wi-Fi Connection

    Note: Make sure that your Wi-Fi network uses 2.4 GHz band. To connect Reach to your Wi-Fi network, follow the steps below: 1. Open Emlid Flow and choose your Reach from the list. 2. Tap the Set up Reach button to open Updater for further setup process.
  • Page 9 4. Select your Wi-Fi network from the list of available networks. 5. Enter the password and tap Connect.

  • Page 10: Update Reach Firmware

    After connecting to Reach M2/M+, the app will check available firmware updates. Follow the steps below to get the latest update: 1. Wait until Emlid Flow checks for the latest update. If there is an update available, it will start the updating process.
  • Page 11 Note: The process may take a few minutes. 2. When the update is complete, wait until your Reach reboots. 3. Wait for the Network LED to stop blinking, showing that Reach M2/M+ has joined your Wi-Fi network again. Close the Updater page.

  • Page 12: Connecting To Reach M2/M

    1.2.2 Connecting to Reach using Emlid Flow When the Wi-FI connection is established, you can connect to your unit using Emlid Flow. 1. Open the app. 2. Choose your unit from the list of available devices.

  • Page 13: Antenna Placement

    Once you connect to your Reach RS2/RS2+ via Emlid Flow, you can access the settings and set it up for the survey. 1.3 Antenna placement Tip: A well-placed antenna is essential for achieving good RTK positioning results. You can place your smartphone near the window in your house and it will obtain GNSS coordinates after some time, but for RTK such environment will not be sufficient.

  • Page 14: No Electronics Nearby

    Electronic devices may produce RF noise that could affect the reception of the GNSS signal. Keep all electronics (including the Reach itself) as far as possible from the antenna. 1.3.3 Ground plane For Reach M2 For Reach M+ Helical antennas do not require ground An antenna has to be placed on a ground planes.

  • Page 15: Hardware Integration

    1.4 Hardware integration Reach supports various accessories via its built-in USB OTG port and UART interface on the JST-GH connectors. It is possible to connect radio modules to Reach in order to obtain corrections or send calculated coordinates. Most radios nowadays use UART or USB as a connection.

  • Page 16: Rfd900 Radio

    1.4.3 RFD900 Radio Caution: Please mind that RFD can consume up to 800 mA in peaks so make sure that your power source can provide enough power for both Reach and RFD900. 1.4.4 Connecting USB radio or LTE modem Note: Make sure the LTE modem you use is compatible with Linux OS. To connect USB radio or LTE-modem to Reach use USB-OTG cable provided with the package.
  • Page 17 To connect LoRa radio to Reach use upper JST-GH port (S2).

  • Page 18: Quickstart

    2.1.2 Configure Wi-Fi connection settings in Emlid Flow Caution: Make sure that your Wi-Fi network uses 2.4 GHz band. After connecting to the Reach hotspot in Emlid Flow, set up the connection to your local Wi-Fi network: 1. On theReceivers screen, tap Wi-Fi.

  • Page 19: Access Reach In Your Wi-Fi Network

    • Try connecting to another Wi-Fi network. 2.1.3 Access Reach in your Wi-Fi network After configuring Wi-Fi connection settings in Emlid Flow, connect your smartphone or tablet to Reach: 1. Connect your smartphone or tablet to the same Wi-Fi network as Reach.

  • Page 20: Connecting Reach To Internet Via Mobile Hotspot

    7. Configure Wi-Fi connection settings in Emlid Flow 2.2.2 Configure Wi-Fi connection settings in Emlid Flow After connecting to the Reach hotspot in Emlid Flow, set up the connection to your mobile device hotspot: Note: Check that your device’s mobile hotspot is disabled to ensure a successful connection.
  • Page 21 Rebooting Reach using Emlid Flow: Alternatively, you can reboot your Reach using Emlid Flow. Connect your device to the Reach hotspot again. Then open Emlid Flow and refresh the list of devices to connect to your Reach. After that, tap the name of your Reach and restart it.

  • Page 22: Access Reach In Your Wi-Fi Network

    To configure your Reach to receive RTK corrections from an NTRIP service via the internet, follow the steps below. Emlid Flow allows you to add an NTRIP profile which you can use later. To add an NTRIP profile, do the following:...
  • Page 23 1. Go to the Profile tab and tap My NTRIP profiles. 2. Add the profile and fill in the information from your NTRIP provider. Tip: To find out which mount point suits you better, check the website of your NTRIP provider. The closer the mount point, the more precise your solution will be.

  • Page 24: Connect Reach M2/M+ To The Internet

    To get NTRIP corrections, connect your Reach to the internet via your control device’s hotspot or built-in cellular modem. Tip: To learn more about connecting your Reach M2/M+ to the internet, check the following guides: • Connecting Reach to internet via Wi-Fi •...
  • Page 25 For Reach M2 For Reach M+ • The positioning mode is set to • The positioning mode is set to Kinematic. Kinematic. • The elevation mask angle is set at 15 • GPS Ambiguity resolution mode is set to degrees.

  • Page 26: Provide Reach M2/M+ With Clear Sky View

    If everything is configured correctly, you will see the "Receiving corrections" notification in the NTRIP cell. Now you’re ready for the survey in the field. 2.3.5 Provide Reach M2/M+ with clear sky view Before surveying, make sure your Reach has a clear sky view of at least 30 degrees above the horizon.

  • Page 27: How To Log Data For Ppk Uav Mapping

    Note: To record time marks in the raw data log, you should ensure smooth synchronization of Reach and a camera. We recommend using the Reach M2/M+ hot shoe adapter. Tip: To learn more about PPK mapping, check the following articles: •...
  • Page 28 Tip: While recording in the RINEX format, you can log the UBX file as a backup. UBX file can be used to adjust RINEX file settings in the Converter tool in Emlid Studio. You can enable logging in the UBX format in the logging settings in Emlid Flow.
  • Page 29 7. Tap Show configuration and select the same satellite systems as in GNSS Settings. 8. Set the logging interval at Full rate. 9. Do not use antenna height. Note: We recommend leaving the antenna height at 0. Usually, photogrammetric software has the feature of calculating the antenna offset (camera center position relative to the antenna position).

  • Page 30: Configure Logging On The Base

    2.3.8 Configure logging on the base To configure logging on your Reach base, follow the steps below: 1. Go to GNSS settings, select the same satellite systems as for Reach M2/M+ and set the update rate at 1 Hz. 2. Go to the Logging screen in Emlid Flow.

  • Page 31: Download Logs

    3. Save your log depending on the device you use. Tip: If you do not need your logs anymore, you can delete them using the Select button. When the logs are downloaded, you can start working with your data in Emlid Studio.

  • Page 32: How To Log Data For Ppp

    Tip: To learn more about PPP, check the How PPP works article. 2.4.2 Recording RINEX logs on Reach To record logs for PPP, perform the following steps: 1. Open Emlid Flow and connect to your Reach. 2. Go to the Logging screen. 3. On the Receivers screen, tap Settings.
  • Page 33 Tip: While recording in the RINEX format, you can log the UBX file as a backup. UBX file can be used to adjust RINEX file settings in the Converter tool in Emlid Studio. You can enable logging in the UBX format in the logging settings in Emlid Flow.

  • Page 34: Downloading Logs

    9. Enable log recording by tapping the Start recording button. Note: PPP services requires recording the data for at least 4 hours to get the best accuracy. 10. To finish recording logs, tap the End recording button. Caution: Wait for data processing to finish. Tip: You may log the data for up to 24 hours, depending on the accuracy required.

  • Page 35: How To Log Data For Opus

    When the logs are downloaded, you can start working with your data in the PPP service. 2.5 How to log data for OPUS textbfNote: You can record logs for OPUS only on Reach M2 as the service supports only multi-band receivers.
  • Page 36 Tip: While recording in the RINEX format, you can log the UBX file as a backup. UBX file can be used to adjust RINEX file settings in the Converter tool in Emlid Studio. You can enable logging in the UBX format in the logging settings in Emlid Flow.
  • Page 37 7. Fill in the point’s name in the Marker name field. 8. Tap Apply and start. Tip: You can start recording automatically when your receiver is turned on. Check the corresponding field on the Raw data settings screen. 9. Enable log recording by tapping the Start recording button. Note: NOAA’s OPUS requires recording the data for at least 4 hours to get the best accuracy.

  • Page 38: Downloading Logs

    Tip: You may log the data for up to 24 hours, depending on the accuracy required. Once you finish the survey, don’t forget to turn off raw data recording in the logging settings. 2.5.3 Downloading logs After you finish raw data logging, you need to download RINEX data from Reach to your mobile device.

  • Page 39: Tutorials-Basics

    3 Tutorials—Basics 3.1 Single-band vs Multi-band Choosing a suitable receiver for your project can be quite challenging. The article below contains tips and tricks that will help you to make the right decision. 3.1.1 Getting started The main idea behind the GNSS receiver work is receiving signals from satellites. Each satellite transmits radio signals in one or more frequency bands.
  • Page 40 fix solution. The more signals that are available, the less time is needed to obtain the fix. Reach M2 requires 5 seconds to get fix solution. Single-band receivers require more time since they can only process one kind of frequency—the L1 frequency.

  • Page 41: Which One To Choose

    Multi-band receivers can work at a longer baseline. Reach M2, as a multi-band receiver, can operate with the baseline up to 60 km (36 miles) for RTK, while Reach M+ single-band receiver’s baseline is limited to 10 km (6 miles) in RTK mode.

  • Page 42: High Real-Time Precision

    • autonomy in remote areas as there’s no need in the internet connection; • independency from local providers, no additional fees by NTRIP service. 3.3 How PPK works Note: To learn more about post-processing with our cross-platform desktop application Emlid Studio, check out our documentation. PPK stands for Post-Processed Kinematic.

  • Page 43: Definitions And Differences From Rtk

    3.3.1 Definitions and differences from RTK Post-Processed Kinematic (PPK) is an alternative technique to Real-Time Kinematic (RTK). With PPK workflow, accurate positioning doesn’t happen in real time, all algorithms are applied afterwards. Both base on the ground and rover (usually on a UAV) record raw GNSS logs, which are then processed to receive an accurate positioning track.

  • Page 44: Placing The Base

    The accuracy of, say, 2 meters is not enough for surveying. 2. Reach M2/M+ solves this by connecting to a camera shutter via hot shoe. The time of each photo is logged with a resolution of less than a microsecond. During PPK you receive coordinates of exact moments of each photo taken.

  • Page 45: Absolute And Relative Position

    3.4.1 Absolute and relative position Emlid Flow has several ways to determine or set the base station position providing various levels of accuracy. Let’s take a look at the illustration below (figure 1). RTK algorithm precisely calculates the distance between base and rover. This distance is called the Baseline. The Rover position is precisely determined relative to the Base position.

  • Page 46: Ways To Set The Base

    The same shift producing effect may be noticed if the base is placed inaccurately over a known point or just moved from it’s determined position without relevant amendments. Note: If the accurate absolute position of the base has been determined only after the job has been done, the offset of the map can be determined and corrected.

  • Page 47: Manual

    Numbers in the table are approximate and only for reference purposes. Your experience may vary in different conditions, always follow appropriate survey practices! No matter which method you use, the relative position of the rover will always be cm-precise, the actual accuracy will be set by the accuracy of the base position. 3.4.3 Manual Android keyboard tech tip: On some Android devices, default keyboards do not provide a minus sign.

  • Page 48: Average

    Triangulation station also known as trig point or trig beacon with Reach RS/RS+ on top (photo by Luke Wijnberg) Pay attention and carefully place the base over a known point and measure the height of the antenna from the mark. It will help to avoid shifts from the absolute position and keep measurements accurate.
  • Page 49 flights and landing): If you only need accurate relative positioning the easiest way is to average the position using single solution. Just physically mark the point on the ground and save coordinates to manual in Emlid Flow. Day-to-day result would look almost identical to those obtained using NTRIP corrections.

  • Page 50: Post-Processed Kinematics

    1. Enable logging of raw data and record log for a few hours. 2. Export log with the collected data from Emlid Flow to your mobile device or PC. 3. Upload the collected file to PPP service (for example, NRCan).

  • Page 51: Placing The Base Station In The Field

    Follow the steps below: 1. Measure the distance between the mark and the bottom of your Reach (h on Figure 5). 2. Specify the measured distance in Emlid Flow. It will automatically calculate the antenna height.
  • Page 52 2. Specify the measured distance in Emlid Flow. It will automatically calculate the antenna height. Reach RS2/RS2+ antenna height: For Reach RS2/RS2+, the antenna height is the distance between the mark and the bottom of the receiver (h on Figure 6) plus the receiver’s height to the antenna reference point (ARP) which is equal to 134 mm and automatically added by Emlid Flow.

  • Page 53: Tutorials-Ppk Mapping With Reach

    • Any camera that provides hot shoe access (e.g. Sony, Canon, Nikon) Note: Reach RS+ cannot act as a base for a Reach M2 rover as Reach M2 requires multi-frequency corrections. Still, you can use Reach RS2/RS2+ as a base for Reach M+. Note that you will not get all advantages of the multi-band receiver in this case.
  • Page 54 Camera triggering Depending on your application, there are several ways you can trigger a camera: • Triggering via camera. Some cameras provide a Timelapse feature that allows taking a photo at regular intervals. If your camera supports this option, we recommend using it as it is the easiest and straightforward way.
  • Page 55 Interruption and temporary signal loss on RTK receiver are called cycle slip. To avoid cycle slips we recommend isolating Reach M2/M+ unit and connect it to the ground to eliminate interference. Also, RC components, such as radio transmitters, might affect the signal as well.

  • Page 56: Reach Rs2/Rs2+/Rs+ Base Setup

    figures below that demonstrate examples of good (the left picture) and bad (the right one) satellite reception. Tip: Create a topic on the Emlid community forum in case you experience any difficulties at this stage. 4.1.3 Reach RS2/RS2+/RS+ base setup Check out the figure below and choose an appropriate location to place Reach RS2/RS2+ or...

  • Page 57: Configuring Base And Rover Before Flight

    2. Access the receiver in Emlid Flow. 3. Go to the GNSS settings screen. 4. Choose the same GNSS systems as for Reach M2/M+ with 1 Hz GNSS update rate. 5. Enable raw data recording on the Logging screen. Reach RS2/RS2+/RS+ base settings...

  • Page 58: Placing Ground Control Points

    2. Access the receiver in Emlid Flow. 3. Go to the GNSS settings screen. 4. Choose the same GNSS as for Reach M2/M+ with 1 Hz GNSS update rate. 5. Enable raw data recording on the Logging screen. 4.1.5 Placing ground control points Ground control points (GCPs) are points with known coordinates on the ground in the area of your interests.

  • Page 59: Survey Flight

    flight. After all the configurations are done, you can proceed to flight with your drone. Caution: Make sure raw data logging on both Reach M2/M+ and Reach RS2/RS2+ or Reach RS+ units are enabled before the flight. When the flight is finished, you can disable logs recording. Before turning the devices off, please wait until the logs processing is done.

  • Page 60: Post-Processing

    The RINEX data will be used to get precise coordinates for the image geotagging. The CSV file is not needed at this step, but it’s essential for further mapping in photogrammetry software. 4.2.3 Post-processing Note: If you already post-processed RINEX files from the base and the rover and obtained the _events.pos file, go straight to the Geotagging section.
  • Page 61 6. Click Process. You will see the progress bar in the bottom left corner. Once the .pos file is ready, Emlid Studio will show it on the plot.

  • Page 62: Geotagging

    To geotag your photos, follow the steps below: 1. Select the folder that contains the photos from the drone’s camera. Note: Emlid Studio can only geotag photos when the number of timestamps is equal to the number of photos. Tip: If you want to update the original photos with geotags, toggle Update original photos.
  • Page 63 2. Click on theTag photos button. The geotagging process will start. When the processing is over, you can click on Show result files to see the geotagged photos. Once you have the geotagged photos, you can proceed with creating a map in the photogrammetry software.

  • Page 64: Creating Map In Pix4Dmapper

    If you do not, please check the Geotagging photos with Emlid Studio first. At previous steps, we got centimeter-accurate geotags from Reach and georeferenced a set of images using this data in Emlid Studio. Now, we will turn it into a map. 4.3.1 Overview Pix4Dmapper is a photogrammetry software for drone mapping by Pix4D.
  • Page 65 5. Click Add images. Browse to the image folder and select the images. They will display in the window. Click Next. 6. In Image Geolocation Editor - Coordinate System, click Edit. . . and select WGS 84 and Geoid Height Above WGS 84 Ellipsoid [m] = 0 in Advanced Coordinate Options. 7.

  • Page 66: Import Gcps

    9. Choose Processing Options Template. The template defines parameters for each processing step and generated outputs. The quality of the reconstruction and the processing time depend on the chosen parameters. If the goal is to generate a DSM and an orthomosaic, the 3D Maps template can be selected.
  • Page 67 For this step, the file with Ground Control Points (GCPs) is needed. The file must be in either a .csv or .txt file format and contain a point name, latitude and longitude in degrees, and altitude for each point. Use a comma to separate the values: GCP0,46.23456,6.56114,299.931 GCP1,46.23234,6.56234,299.823 Tip: Reach supports points export in .csv format only.

  • Page 68: Process Data

    6. Once all the points are marked, press OK. 4.3.4 Process data Note: There are three parts of processing: • Initial processing: Keypoints are identified and matched in neighboring images and used for project reconstruction. • Point Cloud and Mesh: The dense point cloud and 3D triangulated mesh are computed based on the results of the previous step.

  • Page 69: Get Results

    At the end of each step, a Quality report is generated and can be used to verify the success of processing. The processing is finished. Now you can export this orthomosaic to any GIS software to create a vector map based on it. 4.3.5 Get results Once the project has been processed, it is possible to analyze and display results directly in Pix4Dmapper or import them in third-party software.
  • Page 70 The processing is finished. Now you can export this orthomosaic to any GIS software to create a vector map based on it. Tip: To learn more about processing projects in the Pix4Dmapper, check the Pix4D documentation.

  • Page 71: Tutorials-Integration With External Software And Devices

    2. Connect to Reach hotspot. It appears as reach:XX:XX. 3. Enter the password emlidreach. 4. Open Emlid Flow and connect to your Reach. 5. Go to Settings and tap Bluetooth. 6. Enable Bluetooth by tapping the Turn on Bluetooth button.

  • Page 72: Access An Android Device

    Note: Reach name is displayed just above its MAC. In this guide, we used the unit named as Reach. 5.1.4 Access an Android device 1. Navigate to the Bluetooth configuration screen. Activate the Bluetooth connection. 2. Wait for Reach to be listed as an available device. Tip: Keep Reach within a few meters from your Android device.

  • Page 73: Position Streaming From Reach To Android

    5. Enter the PIN code of your Reach unit and confirm it. Reach and Android device are now paired. 5.1.5 Position streaming from Reach to Android 1. Open Emlid Flow and connect to your Reach. 2. Go to Settings and tap Position streaming 1. 3. Select Bluetooth.

  • Page 74: Android Mock Location

    5. Tap Format and choose NMEA. Apply changes. 5.1.6 Android mock location We provide a guide on how to use Reach with Lefebure NTRIP Client. Besides being an NTRIP Client, this app also allows NMEA data input via Bluetooth and supports Android feature called mock location.
  • Page 75 2. Open Developer options on your Android device and choose Lefebure NTRIP Client in the Select mock location app field. Note: It is recommended to switch off the power-saving mode on your phone as it may limit background data usage for the Lefebure NTRIP client app. 3.
  • Page 76 Inside the receiver’s settings, set the following: • Configure Receiver Connection as External via Bluetooth. • Change Bluetooth device to the Reach you are paired with. • Change Bluetooth Connection Method to Secure via Reflection. • Enable GPS Mock Locations.

  • Page 77: Ardupilot Integration

    5. Go back to the main screen and tap the Connect button. Tip: Check the log messages to confirm the Bluetooth connection got established and the information about satellites is updated. From this moment on, all apps on the Android device that use location services will automatically have access to the positional data streamed from Reach.

  • Page 78: Overview

    • Telemetry connection that is provided via a serial radio. • Rover Reach M2 or Reach M+ unit is mounted on a drone and connected to Navio2 or Pixhawk via the 6P-to-6P wire. This connection type will solve three issues at once: power Reach, allow ArduPilot board to pass base corrections and allow Reach to pass RTK solution back.

  • Page 79: Connect Reach To Autopilot

    The following guide will show you how to configure Navio2 or Pixhawk and Reach to work in this setup. If you want to change the workflow, it should be easy to do so, as every part of the system is independent of others. 5.2.3 Connect Reach to Autopilot To pass the position data from Reach, connect it to your autopilot.

  • Page 80: Configure Reach Module To Work With Ardupilot

    Note: The serial connection is used to accept base corrections and send solution at the same time. First, configure the corrections input: 1. Open Emlid Flow and connect to your rover. 2. Tap Correction input. 3. Select Serial. 4. Choose S1 (UART) or USB to PC as the port.
  • Page 81 6. Tap Save button to save settings. After that, configure the position streaming: 1. Return to the Receivers screen and go to Settings. 2. Tap Position streaming 1. 3. Select Serial. 4. Choose S1 (UART) or USB to PC as the port. 5.

  • Page 82: Set Up A Correction Link

    5.2.5 Set up a correction link Reach supports a number of ways to accept base corrections, including the popular in UAV area serial radios. However, having a separate radio link for base corrections only is highly ineffective. To solve this, you can use the telemetry radio as a carrier for RTK corrections. GCS can pass these corrections to the autopilot with a feature called GPS inject.
  • Page 83 • For UART connection: • For USB connection: This will allow using Reach as an external GPS. ArduPilot configuration will require setting some parameters via Mission Planner. After connecting, do the following: 1. Go to the CONFIG menu. 2. Select Full Parameter List in the left side menu. To find the desired parameter quickly, use a search box on the right (highlighted in red).

  • Page 84: Set Up Your Base

    4. Set SERIAL4_BAUD parameter to the same baud rate as chosen in Emlid Flow Position streaming settings. Note the options corresponding to the different baud rates. 5. Set SERIAL4_PROTOCOL parameter to 5 - GPS. 6. Set GPS_AUTO_SWITCH to 1 - Enabled. Autopilot will automatically switch between the two GPS receivers picking the one with better solution.

  • Page 85: Configure Mission Planner To Inject Corrections Into Telemetry

    3. Choose TCP server. 4. Set 9000 as a port. 5. Tap Save button to save settings. 5.2.9 Configure mission planner to inject corrections into telemetry To enable and configure GPS inject options in Mission Planner, you need to open a window with advanced GCS settings.
  • Page 86 After that, in the new window, you need to choose parameters for base connection. Follow the steps below: 1. Choose TCP Client and press Connect. 2. Enter the Reach base’s IP address and press OK.
  • Page 87 3. Enter the server port number and press OK. 4. Finally, check the corrections are coming in.

  • Page 88: Specifications

    Reach LoRa radio 3D model in STEP format LoRa radio [STEP, 344 KB] Reach LoRa radio 3D model in IGES format LoRa radio [IGES, 661 KB] Reach M2 GNSS antenna 3D model in STEP format GNSS antenna [STEP, 2.8 MB] 6.2 Dimensions Reach M2/M+ weights 35g.

  • Page 89: Electrical Specs

    6.4 Electrical specs 6.4.1 Maximum ratings For Reach M2 For Reach M+ 6.4.2 Connectors pinout 6.5 USB OTG Reach can both receive power from USB, acting as a device and source power to the port acting as a host. To use Reach in OTG mode you will need to connect 5V power source to...

  • Page 90: Led Status

    Status This LED is used to display Emlid Flow status. The LED turns green and blinks slowly when Reach passes time sync, stays solid during normal operation, blinks fast when Reach is in Point collection mode, and fades away when Reach has an internal error.

  • Page 91: Power Supply Over Usb

    8.1 Power supply over USB You can power Reach over Micro-USB cable using power supplies like: • Power bank • USB wall adapter • Computer USB ports...

  • Page 92: Powering Using Jst-Gh Ports

    8.2 Powering using JST-GH ports Reach can be powered by providing 5 Volts to corresponding pins on any of the four JST-GH ports.

  • Page 93: Troubleshooting

    Tip: We recommend updating firmware every time it is available. Note: You can also subscribe for Beta updates in Emlid Flow. In Settings, go to Firmware updates, tap Beta Updates and enable Beta updates.
  • Page 94 2. On the Updater screen, tap the Upgrade Reach Firmware button to start the update. 3. Wait until Reach reboots. Keep the Wi-Fi network on. 4. After reboot, wait for the Network LED to start blinking slowly, showing that Reach M2/M+ has joined your network again.

  • Page 95: Roll Back From Beta To Stable

    This tutorial shows how to reflash Reach M2/M+ firmware using Reach Firmware Flash Tool. Tip: Most new features are released via the Emlid Flow app and can be updated simply via its interface. You can find more information in the Settings overview section.

  • Page 96: Windows Installation

    2. Follow the instructions to install Reach Firmware Flash Tool on your Mac. 3. Drag the application icon to the Applications folder. 9.2.5 Reflash your Reach M2/M+ Reflash your Reach following the steps below: 1. Open Reach Firmware Flash Tool and choose Reach M2/M+.
  • Page 97 2. Connect your Reach in Firmware mode. How to switch your Reach to Firmware mode: Make sure that your unit is disconnected from the PC and perform the following steps: • Use a pin to press and hold the button located in the pinhole under the power LED. •...
  • Page 98 4. Click Flash. 5. Wait until the end of the flashing process. 6. Wait until Reach reboots after reflashing. When Reach successfully reboots, you will see "Reach is flashed and ready to use" message. Caution: Do not unplug your unit on this step.

  • Page 99: How To Download Simple System Report

    Tip: You can check the First setup guide to ease setup process. 9.3 How to download Simple system report This guide explains how to download a Simple system report (SSR) in the Emlid Flow app to facilitate Reach troubleshooting. 9.3.1 Overview An SSR is a tool used to facilitate Reach troubleshooting.

  • Page 100: Download Simple System Report

    Now you can send the SSR of your Reach to the Support team at support@emlid.com. 9.4 How to download Full system report This guide explains how to download a Full system report (FSR) in the Emlid Flow app to facilitate Reach troubleshooting in complicated cases.

  • Page 101: How To Find Serial Number

    4. In the Full report section, tap Generate. 5. Save the report depending on your device. Now you can send the FSR of your Reach to the Support team at support@emlid.com. 9.5 How to find serial number This guide explains how to find the serial number of your Reach.

  • Page 102: How To Enable Raw Data Debug Option

    2. Write down or take a photo of the serial number. Now you can send the serial number of your Reach to the Support team at support@emlid.com. 9.6 How to enable raw data debug option Caution: We recommend enabling the option only on the Support team request since the debug data adds extra weight to the logs.

  • Page 103: How To Restore Initial Settings

    You can restore initial settings on your Reach using the Restore initial settings option in Emlid Flow. The option allows restoring GNSS settings, Correction input, Base output, and Base mode to an initial state. All other settings, including receiver name, Wi-Fi settings, logs, and projects will be saved.
  • Page 104 2. Tap Settings and go to the Troubleshooting section. 3. Tap Restore initial settings.
  • Page 105 4. Tap the Restore settings button. Once it’s done, you will see that the button becomes gray and its name changes to Done. After that, you can proceed to set up your Reach.

  • Page 106: Glossary

    10 Glossary Absolute positioning Absolute positioning shows your actual global coordinates relative to the Earth’s surface. Absolute positioning is a key to RTK surveys where you need absolute geographical accuracy (e.g, mapping, surveying the borders of the property, etc). In this case, your base absolute position is crucial for high accuracy results.
  • Page 107 A good DOP value is considered to be below 2. Elevation mask Elevation mask can be configured in RTK settings in the Emlid Flow app. Satellites lower than set elevation will be excluded from the computation. The default setting is 15 degrees.
  • Page 108 Fix-and-Hold Fix-and-Hold is a strategy for solving the ambiguities in RTK and PPK. After the first ambiguity fix holds them constrained. Fix is more stable but in case first initialization was not correct it will take longer to recover and initialize correctly. You can think of it as if Fix had inertia. Full System report A full system report is a tool used to facilitate issues reports.
  • Page 109 Hot shoe adapter Hot shoe is a point on the top of a camera that is used to attach accessories or other equipment to the camera. Using hot shoe adapter, you can connect your camera to Reach M2/M+ for UAV mapping. Hotspot mode The hotspot mode means that the Reach is broadcasting its own Wi-Fi network.
  • Page 110 3D scanners and are used in photogrammetry and 3D-modeling. Point Collection Point collection is a feature in the Emlid Flow app that allows you to find the exact coordinates of the point. The receiver determines the coordinates (x, y, z) of a ground point and records it to your project for further processing .
  • Page 111 It can be recorded in UBX or directly in industry-standard RINEX format. Emlid Flow Emlid Flow is the mobile app created by Emlid. It is used to control and configure the Reach receivers, create projects, collect points, etc.
  • Page 112 You can find the SNR indicator on the main screen of the Emlid Flow app. When the SNR of a satellite is over 45, it will be marked green. Grey bars indicate SNR of the base station. The more satellites are in a green zone, the more precise your measurements are and the faster your ambiguity resolution is.
  • Page 113 Static Positioning Static positioning is one of the positioning modes. It assumes that the Reach rover is static. Constraining the system helps to resolve ambiguities faster as well as produce measurements with higher precision. Transmission Control Protocol or TCP is one of the main internet data transfer protocols designed to control data transfer.

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