Kolida K20s User Manual
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Kolida K20s User Manual

Positioning system
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K20s
KOLIDA K20s Positioning System
User Guide
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Summary of Contents for Kolida K20s

  • Page 1 K20s KOLIDA K20s Positioning System User Guide - 1 -...

  • Page 2: Table Of Contents

    K20s Contents Contents ............................. - 2 - ChapterⅠ Brief Introduction ....................- 4 - § 1.1 Introduction ....................... - 4 - § 1.2 Applications ....................... - 4 - § 1.3 Features ........................- 4 - ChapterⅡ Hardware Structure ....................- 7 - §...
  • Page 3 § 6.2.5 Inertial Measurement (IMU) ..............- 92 - § 6.2.6 Radio Router ....................- 95 - Appendix A KOLIDA K20S technical specifications ............. - 96 - Appendix C Technical Terms ....................- 99 - FCC Statement ........................- 100 -...

  • Page 4: Chapterⅰ Brief Introduction

    GNSS receivers and Total Stations, etc. To know more about KOLIDA, please visit our official website http://www.kolidainstrument.com/. In the guide, we'll show you how to operate the K20s RTK system as well as the accessories. We recommend you to read the guide carefully before getting started.
  • Page 5 Equipped with Bluetooth 4.0 module, K20s is able to build stable BT connections with both android and windows mobile devices. WiFi WIFI AP mode enables us to access to K20s' WEB UI and WIFI client mode enables K20s to connect to Internet downloading corrections. Advanced Built-in UHF Module K20s UHF module supports all the mainstream radio protocols in the market;...
  • Page 6 GNSS signal stability are greatly improved from old generation technology. IMU Survey Thanks to the inertial measurement technology, K20s allows user to do a tilt survey in 2-4cm accuracy with a maximum tilt angle of 60 ° . Centering is not a must and magnetic environment won't effect on the accuracy of tilt survey.

  • Page 7: Chapterⅱ Hardware Structure

    § 2.1 Components of The Receiver K20s size is 163mm in diameter and 96mm in height. The whole shell is made of magnesium alloy material, which makes K20s more rugged and durable. Two physical buttons and one 1-inch OLED screen in the front panel makes K20s easy to operate.
  • Page 8 Display and main interface Power on K20s, and after initialization, K20s will access to the skyplot interface while detecting satellites. And then we will hear the voice indication about the current working mode. And 10 seconds later, the interface will switch to display coordinates and other information such as skyplot, the number of satellites and PDOP value.
  • Page 9 K20s ⑤ ⑥ ④ ① ⑦ ② ③ Coordinates page ⑧ ⑨ ⑩ Skyplot page Component Description ① Display the remaining power in real-time Battery symbol ② Display the coordinates Coordinates ③ Solution/Message type In base mode, it will display the base's transmitted correction message type;...

  • Page 10: Side View

    WIFI hotspot (We recommend to turn it off while unused.) ⑦ Data link symbol K20s will indicate the current used datalink at this location. means internal UHF mode and the current channel, means the GPRS mode,...

  • Page 11: Lower Housing

    § 2.2 Physical Key Operation § 2.2.1 Front OLED Interface After K20s is powered on, press F key once to access to the configuration interface, where we can do Mode Select, Set Datalink, System Option, WIFI Config, UHF Info, Config Mode, Power Off and Quit.

  • Page 12: Mode Select

    K20s Press F key to move the config option from one to another, and press Power key to confirm. § 2.2.2 Mode Select In the configuration interface, press F key to access Mode Select option and press Power key to confirm.
  • Page 13 K20s antenna height, sampling interval, record mode and data type. Site: this is point ID for static, and it is the last 4 digits from serial number, but you can edit it if you choose this item, there are 0-9 and A-Z for each digit.
  • Page 14 K20s Base Mode Setting Press F key to select Base mode in Mode Select Interface and press Power key to confirm. Start Base Option This option is to set up base transmission parameters. Base Mode: Manual, Repeat and AutoBase for optional to start the base station.
  • Page 15 K20s Record Option This is used to set raw data collection parameters for base station. Rover Mode Setting Press F key to select Rover mode in Mode Select Interface and press Power key to confirm. Rover Setting This is used to configure the mask angle and SBAS satellite view for rover receiver Mask Angle: The minimum GPS satellite elevation angle permitted by a particular receiver design.

  • Page 16: Datalink Setting

    § 2.2.3 Datalink Setting KOLIDA K20s is integrated with built-in UHF radio module, cellular module, bluetooth and WIFI, etc. K20s also can connect to external radio. When datalink is not used, we can close datalink to save power. In the configuration interface, press F key to access Set Data Link option and press Power key to confirm.
  • Page 17 K20s UHF Setting After selecting UHF option and in the configuration interface, we can set the channel, air baud rate, communication protocol and power for internal UHF. Channel: This is the communication channels for internal UHF, the value of the channel must be the same in both Base and Rover.
  • Page 18 K20s Cellular Net Setting This mode is to use the internal cellular module that connects to internet and access to reference station for the corrections. Dual Transmitting Mode This mode enables Base station to transmit corrections by internal UHF and cellular net at the same time.
  • Page 19 K20s WIFI Datalink Setting This is to use WIFI as the datalink that connect to the internet and access to reference station for corrections. External Device This mode enables receiver to connect external radio. Close Datalink This option is used to turn off all of the transmission method for development and customization, usually we keep all the datalink activated.

  • Page 20: System Setting

    K20s § 2.2.4 System Setting In the configuration interface, press F key to access System Option and press Power key to confirm. And then we can do configurations including Language setting, Voice option, self-check, online service, Online Option, Other Option and Copy Static File items.
  • Page 21 Online Option This online service option is used for registration and upgrade firmware online for KOLIDA K20s, it is very convenient that you don‟t need any more PC software to do this. Other Option In this page, there are USB mode, Display SV and Power items displayed.
  • Page 22 USB Mode: When we connect K20s to PC by 7-pin USB cable, there are two kinds of USB mode for selection: USB Disk and Ethernet (USB Network). If USB Disk is selected, then K20s' internal memory will display in PC, and we can access to the memory to copy static data.
  • Page 23 The default setting is to display GPS. Power: If we select Saving, when there's no operations in a long time, the screen of K20s will turn off to save power automatically. And we can press any key to exit power saving mode.

  • Page 24: Wifi Config

    WIFI Info page. Connected SSID: This is the connected WIFI SSID which connects to internet. IP: K20s will generate an LAN IP address for accessing its internal web UI page after connecting to the WIFI. If the WIFI working mode is selected to be “AP”, the WIFI hotspot information will be displayed at WIFI Info page.
  • Page 25 K20s Search the WIFI SSID broadcasted by K20s with smartphone or laptop and connect it, then input the IP address 10.1.1.1 into the address bar of explorer and access to the web UI of K20s WIFI Option This is used to turn on/off the WIFI and setup what working mode of WIFI, such as AP (WIFI hotspot) and Client.

  • Page 26: Datalink Info (Only For Base/Rover)

    AP: This item means the WIFI hotspot broadcasted by K20s for mobile terminals such as smartphone or tablet to connect and access the Web UI. Client: If this item is selected, K20s will connect to the internet via WIFI connection and then download the corrections from reference station.

  • Page 27: Config Mode

    K20s WIFI Status If the WIFI is selected to be current datalink for Base or Rover, the WIFI Status item will be displayed at the main configuration page, press F key to move the select box to this item and then press Power key to enter its page to view more information.

  • Page 28: Power Off

    K20s § 2.2.8 Power Off There are two ways to power off receiver. One is to hold power button for 3 seconds directly; the other is to Press F key in configuration interface to access Power Off interface. In Power Off interface, we can select OFF to power off receiver or select RESET to restart receiver.

  • Page 29: Chapterⅲ Web Ui Configuration

    Remote Login If users would like to remote login the web UI of K20s, then K20s has to connect to the internet and forward its 80 port to the public network. For example, if the IP address 222.196.35.76 is the...

  • Page 30: Web Ui Main Interface

    K20s § 3.2 Web UI main interface After connecting to K20s' WIFI hotspot, we can input 10.1.1.1 in browser and the login page will appear. IP Address Username/password - 30 -...

  • Page 31: Status

    K20s In the Web UI home page, Status, Configuration, Satellite Information, Data Record, Data Transfer, Network Config, Radio Config, Firmware Update, User Management and Help are listed at left side. And the positioning informaiton including positioning information and satellites are diplayed at right side.
  • Page 32 In this page, information such as serial number, hardware ID, MAC address, firmware version and so on are displayed. Work Status K20s' status such as working mode, datalink, receiver temperature, remaining power and the free memory is displayed on this page - 32 -...

  • Page 33: Configuration

    K20s Position Information In this page, we can have a clear glance at current K20s position and detected satellites information. § 3.2.2 Configuration General Config, Base Setup, Antenna Setup, Satellite Tracking, Receiver Operate and Default Language are contained under Configuration menu. Users are able to configure all kinds of...
  • Page 34 The registration and receiver working mode setting can be completed in this general configuration page. If the code of K20s has expired or is going to be expired, please provide the serial number of your K20s to your local dealer to apply for another available code, then input the code into the blank or register the receiver online.
  • Page 35 EVENT Polarity: EVENT input method. Base Setup When K20s works as a base, the basic configuration for base can be setup in this page. Users can input the correct coordinates or capture a current position for the base. Also users can define...
  • Page 36 K20s what kind of correction format is transmitted. CMR ID/RTCM2.X ID/RTCM3.X ID: Users can specify the ID for transmitting correction. Position: Click this button to capture the coordinates for current position Spare: This is used to the repeat station Base Start Mode: Here contains 3 methods to start the Base, manually start base, automatically start base by fixed point, automatically start base by current point.
  • Page 37 K20s Antenna Height: This is the value for height of antenna while surveying. Measuring Method: Here provides several methods for measuring the antenna height such as carrier phase center, slant height, antenna edge, height plate and to the bottom. Satellite Tracking...
  • Page 38 K20s Receiver Operate The page provides all kinds of operations to control the receiver such as self-check operation, clean epochs, factory reset, reboot and power off. Self-check: Users can also do the self-check from this configuration page, click on the Check all button to check all the modems or click on the check button corresponding to the modem to check one by one.

  • Page 39: Satellite Information

    K20s Voice Prompt: Check on this box to turn on the voice guide for K20s, cancel it to turn off the voice guide. Voice Volume: Define the voice volume for K20‟s speaker. Power: Configure the receiver to use the power saving mode or not.
  • Page 40 K20s Tracking Chart Tracking Chart is to show the used satellites' SNR (signal noise ratio). Skyplot Skyplot is to show the used satellites sky position. - 40 -...
  • Page 41 K20s GPS on/off For all the running GNSS constellations or the augmentation system, K20s allows to configure to use which satellite or not. In gnss on/off page, all the running satellites are listed, and unselect the box corresponding to the satellite to not use it.

  • Page 42: Data Record

    § 3.2.4 Data Record The “Data Record” is mainly used to configure all the parameters for receiver in static mode. Much more operations can be done on KOLIDA K20s such as storage path, interval, data format and data files download.

  • Page 43: Data Transfer

    K20s Data Download This interface is to download collected raw data. § 3.2.5 Data Transfer This function contains General, Serial Port Config, TCP/IP Config, NTRIP Config and Data Flow Config. The “Data Transfer” allows to configure the output mode for raw observation data and differential data, as well as to the NTRIP performance configuration.
  • Page 44 Navigation Data: This is the navigation data output from receiver such as NMEA-0183, GSV, AVR, RMC and so on. It is configured in Data Flow Config page. SIC Observation Data: This is the user-defined format observation data from KOLIDA. OpenSIC Observation Data: This is the open version of KOLIDA user-defined format...
  • Page 45 And there are Caster and Server working mode for this performance. Caster: If this working mode is selected, K20s will be a client to upload the data to a specify server if it connects to the internet by WIFI or GPRS connection with SIM card inserted. Input the specified IP and port for server, and the data format what is uploaded.
  • Page 46 Active: Check on this circle to activate this function. Authentication Mode: These two modes use different protocol standard for the connection, Eagle Mode is KOLIDA standard mode, and TCP/IP Mode is for private network use, usually, choose the Eagle mode for the default setting.
  • Page 47 HHHH_RTCM30 NtripCaster This feature is finally realized on KOLIDA K20s, the receiver is equivalent to a CORS system that it generates and broadcasts the user-defined correction for rover if K20S connects a static IP address.

  • Page 48: Network Config

    Click on the dropdown list for each data format to define the update rate § 3.2.6 Network Config The “Network Config” is able to configure the ways and the contents for internet access of K20S. GSM/GPRS Config, CSD Config, WIFI Config, Bluetooth Config, Port Forwarding, Router and Network Testing are under the list of Network Config.
  • Page 49 This is used to enable the WIFI hotspot for K20s to broadcast for mobile terminals such as smartphone or tablet to connect and access the Web UI. Check the box of AP in Work Mode to enable the WIFI hotspot for K20s, and define the SSID, password, encryption method and broadcasting channel for WIFI connection.
  • Page 50 Scan: Click this button to search the surrounding available WIFI hotspot. Password: This is the password which the WIFI hotspot requires. IP fields: If K20s successfully connects to the WIFI, there will be an LAN IP address generated by K20s.
  • Page 51 In this page, users can view the information and connection status of Bluetooth, such the MAC of Bluetooth, discoverable or not, the PIN code, and the connection devices in following table. Port Forwarding This page is mainly used to view and configure the internet transmission port for K20s, customize and debug receiver. - 51 -...
  • Page 52 KOLIDA technician for more supports. Network Testing This function is mainly used to test network status for K20s after logging on the internet. How to do: Input the IP address which K20s already connected, then click PING button, the testing information will be displayed in the following window.

  • Page 53: Radio Config

    Data Baud Rate: This represents the rate of data transmission port of internal radio, this rate should be the same in both Base and Rover. In general, the data baud rate of KOLIDA radio module has been unified to be 19200, keep it as default.

  • Page 54: Firmware Update

    Update the latest firmware for receiver or for corresponding modems can be done in “Firmware Update”. Firmware Update We can update the firmware of receivers and modules in this interface. Online Update: KOLIDA K20s supports to update the firmware online anytime if there is - 54 -...
  • Page 55 K20s something update or optimized. Local Update: Update the latest firmware by using a firmware file. How to upgrade the firmware with Local Update Click on “Browse” button to load firmware file (Please take in mind that the firmware is ended with .img as the extension name).
  • Page 56 K20s SPECIAL REMIND: KOLIDA K20s doesn’t support to update the firmware with the help of INstar program any more, in the future, update the firmware for KOLIDA K20S shall be done through the Web UI. Module Update This page is used to update the firmware for corresponding module parts such as GNSS board, radio module, network module and other sensors.

  • Page 57: User Management

    K20s § 3.2.9 User Management This page is used to manage the authority of login Web UI for users, including the username, password and add users. § 3.2.10 Help In this page, users can get help and check the log book of receiver (the log book can help to backtrack the working status of receiver).

  • Page 58: Chapterⅳ Data Collector T17N

    ChapterⅣ Data Collector T17N § 4.1 Basic introduction to the handheld Here takes T17N for example (If you want to know more about KOLIDA controller, please go to KOLIDA website http://www.kolidainstrument.com/ for for informaiton), appearance of T17N: - 58 -...
  • Page 59 K20s The yellow sections are the system defaults, and the functions of the 4 hotkeys are below: F1: Start menu. F2: Off. F3: Camera. F4: System main interface - 59 -...
  • Page 60 K20s The other keyboard operation: System defaults to the digital input method System Default Lowercase letters Switch between / and - Press↑（shift） Press↑(shift) again, it will be digital input method Capital letters Switch between / and - Press the Caps button again for lowercase letters...
  • Page 61 K20s Insert the SIM card and TF card according to the instructions in the battery cabin. Insert the battery according the instructions on the battery label. Close the back cover and turn the back cover screw to the lock position.
  • Page 62 K20s Power on/off Make sure the battery has enough power, or connect the T17 to a DC adaptor. Press power button for 3~5 seconds to turn on (until the boot screen appears). Press the power button for 3~5 seconds, and confirm to power off.

  • Page 63: Software Installation And Connecting

    Click screen and select „OK‟ to exit. § 4.2 Software installation and connecting EGStar is the specific software for K20s measuring system, mainly for the collection and calculation of the measuring points. Before installing of EGStar, you need to install Microsoft Active Sync. After installing it on your...
  • Page 64 K20s computer, connect handheld to computer with a cable, and install EGStar into the handheld, at the same time, keep the mainframe power on, then set as follows: Open EGStar software and enter the main interface. Click “OK” on the "prompt" window.

  • Page 65: Chapterⅴ Accessories

    ② --- 7-Pins cable for connectin the receiver with computer for static data transmission, Web UI accessing and firmware update. ③ --- K20s Receiver ④ --- Charger for K20s Receiver ⑤ --- Instrument Case ⑥ --- Height measurement piece ⑦ --- UHF Antenna...
  • Page 66 ② --- Height measurement piece ③ --- Instrument Case ④ --- 30cm Support pole ⑤ --- UHF Antenna ⑥ --- Charger for K20s Receiver ⑦ --- Connector NOTE: The models and types of instrument accessories will vary with the instrument upgrade...

  • Page 67: Other Cables And Accessories

    ⑤—— Power supply cable, this cable is used to connect the power source to receiver. § 5.3 Other Cables and Accessories 7-pin to OTG cable This cable is used to connect an external storage directly to KOLIDA K20S for static data storage and copy. USB interface...
  • Page 68 K20s Serial port, connect to computer 5-pin port, connect to receiver Other accessories include carbon-fiber pole, handheld controller bracket, tribrach, connectors, height measuring plate and measuring tape. Tribrach & connector Measuring tape Support pole Bracket for controllers - 68 -...

  • Page 69: Chapterⅵ Measuring Operation

    K20s ChapterⅥ Measuring Operation Reading this chapter, you can grasp in detail how to use the K20S measurement to do system static, RTK operations. GPS measurement operation scheme refers to the operating scheme used to determine the relative position between the stations with the help of GPS technology. Point coordinate precision obtained is not the same;...

  • Page 70: Operating Procedures

    Project acceptance § 6.1.3 Field Operation Notes 1)Static mode of KOLIDA K20s receiver can be set in EGStar software or other software (Such as SurvX, Field Genius or SurvCE), also can be performed by receiver keypad. 2)Set up a tripod on the control point, leveling and centering strictly on the measuring point.

  • Page 71: Gps Net Design

    K20s 5)Power on, confirm the static mode, the mainframe begins to search satellites and satellite lights begin to flash. Recording condition reached, the status light flashes in accordance with the set sampling interval, flashing once indicates the acquisition of an epoch.

  • Page 72: Antenna Height Measurement

    K20s and consistency. General speaking, the amount of baselines has such limit as follows: The advantage of circle net is the small workload, good self-checking and consistency. But the main disadvantage is that the accuracy of indirect-observed border is lower than that of direct-observed border, and the baseline accuracy of neighbor points distributes unevenly.
  • Page 73 K20s Measuring plate We use a formula to calculate antenna height. “h” is the inclined height that measure from point on the ground to the measuring plate edge. is the distance from middle of antenna to the edge of measuring plate.

  • Page 74: Rtk Measurement

    K20s § 6.2 RTK measurement RTK is the abbreviation of Real-Time Kinematic measurements. RTK technology is the real-time dynamic differential carrier phase positioning technology, combining global satellite navigation and positioning technology with data communication technology which includes base station and rover station. Base station transmits the data by radio or network to the rover station, which will perform differential analysis, thus providing real-time coordinates of the measurement point in the specified coordinate system.
  • Page 75 K20s § 6.2.1.1 Base Station Set up Base station shall be set up in the broad view, unobscured and higher places; avoid the vicinity of the high-voltage power transmission equipment and the transmitting and receiving antennas of radio communication equipment, the shade of trees, and the sides of waters, all of which will...
  • Page 76 Check the box of “Base” option and click “OK” and return to Instrument setting page. At this moment, KOLIDA K20S prompts the correct working mode with voice guide. Then tap on “Work mode setting” and then check the box of “Set data link”, then click on “Next”...
  • Page 77 K20s Then tap on the symbol to save and complete the parameters. 10) Input the coordinates for base location or tap on the symbol to obtain a single position for base. 11) After all the parameters are completely set, click on “Start” button to start the base station.
  • Page 78 K20s Using internal Web UI Connect KOLIDA K20S with computer via 7-pin to USB cable and set the USB port to output as Ethernet on K20S. (a driver is required to installed on computer to enable this function). Login the internal Web UI of K20s with the default username and password (admin/admin).
  • Page 79 K20s Get into “Radio Parameters” interface under “Radio Config”, configure the radio parameters for base station such air baud rate, channel value, power and protocol. § 6.2.1.3 Rover station set up After verifying the successful transmitting of the Base station, the rover station shall be set up at this moment.
  • Page 80 Tap on “Work mode setting” and then check the box of “Set work mode”, then click on “Next” to continue; Check the box of “Rover” option and click “OK” and return to Instrument setting page. At this moment, KOLIDA K20s prompts the correct working mode with voice guide. - 80 -...
  • Page 81 K20s Then tap on “Work mode setting” and then check the box of “Set data link”, then click on “Next” to continue; Check the box of “Internal radio” option and click “OK” to complete the settings. - 81 -...
  • Page 82 “Switch” button to apply this channel value. Using Web UI Connect KOLIDA K20s with computer via 7-pin to USB cable and set the USB port to output as Ethernet on K20s. (a driver is required to installed on computer to enable this...
  • Page 83 K20s function). Login the internal Web UI of K20S with the default username and password (admin/admin). Get into “General Config” interface under “Configuration”; Choose “Rover” in “Work Mode” and “Radio” for “Datalink”, then click “Enter” button to save configurations; Get into “Radio Parameters” interface under “Radio Config”, configure the same radio...

  • Page 84: By Using Radio (External Radio)

    K20s § 6.2.2 By using radio (external radio) § 6.2.2.1 Base station setup Set a tripod to the location with known coordinates (or unknown), attach base receiver to the tribrach adapter set (the measuring plate is recommended to install under base receiver).
  • Page 85 K20s At least 2m away NOTE: place the 2 tripods at least 2m away from each other against signal interference. Using EGStar3.0 Set the base receiver as base working mode from “Config—Device Config—Instrument Config—Work mode setting—Set work mode--Base”, choose the External option in “Set data link”.

  • Page 86: By Using Internet (Gprs)

    K20s § 6.2.2.2 Radio settings Make sure all connections are alright, then power on the radio by pressing power button, and then press “C” button to define the channel for data transmission. Please keep in mind the channel is selected to match the settings in controller later on.
  • Page 87 K20s Input a name for NTRIP connection and choose “NTRIP-VRS” for “Mode” and choose “GPRS/CDMA” for Connect. Then click on “Change” button to define the ANP for your local SIM card. - 87 -...
  • Page 88 K20s Input the IP address and port, then input the assigned username and password for your NTRIP connection. Press “Get Sourcetable” button to obtain mountpoint list, then select the appropriate one from the list in Access option, press “OK” button to confirm and return to Network Setting interface.
  • Page 89 Web UI settings Login the web UI of K20S and go to “General Config” interface, then choose “Network” in “Datalink” option, click on “Enter” button to confirm and save the settings. Then go to “GSM/GPRS Config” interface under “Network Config” to check if the SIM card is detected, and input the APN information at the bottom.

  • Page 90: By Using Internet (Wifi)

    “Enter” button at the bottom to access. § 6.2.4 By using internet (WIFI) WiFi datalink is a new feature and new technology adopted on KOLIDA K20S, it is more faster and stable in network RTK job. Set the receiver as rover with WIFI mode on the control panel or on Web UI.
  • Page 91 Web UI settings Login the web UI of K20s and go to “General Config” interface, then choose “WIFI” in “Datalink” option, click on “Enter” button to confirm and save the settings. Then go to “WIFI Config” interface under “Network Config”, there the option of “Client”...

  • Page 92: Inertial Measurement (Imu)

    “Enter” button at the bottom to access. § 6.2.5 Inertial Measurement (IMU) Equipped with IMU sensor, K20s IMU' tilt survey requires no calibration and is no longer affected by magnetic environment. Just by a quick shake, IMU tilt survey function can be...
  • Page 93 It takes too much time to do E-bubble calibration and magnetic calibration before work. And the earth magnetic field has a great impact on the survey result. For K20s IMU, we don't need to do those calibrations and after K20s IMU gets fixed solution, with a quick shake to activate IMU tilt survey, we can start work.
  • Page 94 K20s 3. Conveniently Measure Inaccessible Points SPECIAL REMIND: Please run this Website for more IMU info: https://www.linkedin.com/pulse/inertial-measurement-rtk-k5-imu-bring-your-producti vity-andy-lau/?published=t - 94 -...

  • Page 95: Radio Router

    K20s § 6.2.6 Radio Router This feature is used to transfer the correction which from the reference station for the other rover by radio, the rovers will have the same coordindates from the reference station. NOTE: This function should be used under Rover+Network mode.

  • Page 96: Appendix A Kolida K20S Technical Specifications

    K20s Appendix A KOLIDA K20S technical specifications GNSS characteristics: ■ 692 GNSS channels - GPS L1C/A, L1C, L2C, L2E, L5 - GLONASS L1C/A, L2C/A, L2P, L3 - BeiDou B1, B2, B3 - Galileo GIOVE-A, GIOVE-B, E1, E5A, E5B - SBAS L1C/A, L5 ■...
  • Page 97 K20s RTK initialization time ■ 2~8s Physical characteristics Size ■ 16.3 x 16.3 x 9.6 cm Weight ■ 1.33 kg (with built-in battery) User interface ■ Five Indicator lights, Two buttons ■ OLED color screen, 1 inch, 128x64 res. ■ Linux System I/O interface ■...
  • Page 98 ■ External DC power: 9-28 V UHF Radio characteristics ■ Built-in radio, 120 channels ■ Frequency Range 410-470MHz ■ Protocol: TrimTalk450s, TrimMark3, SOUTH (KOLIDA), Hi-target, CHC, Satel ■ 1W/2W/3W switchable ■ typically working range 7-8km ■“Barrier-Free” Measurement Technology: Repeater/ Router Cellular module characteristics ■...

  • Page 99: Appendix C Technical Terms

    K20s ■ Post-processing software: KGO (Windows PC) ■ 1 year warranty Optional system components ■ External Radio (410-470 MHz, 5-35W) ■ Battery Case SA-6003 ■ Data collectors - H3 plus (Android), H5 (Android) - T17N (Windows mobile) - S50 (Android) ■...

  • Page 100: Fcc Statement

    K20s errors factor in dynamic positioning   Eccentricity: where a, b of the semi-major axis and semi-minor axis. Ellipsoid: mathematical graphics formed when an ellipse moves around the minor axis of rotation in Geodetic Survey. Ephemeris: the position of celestial bodies over time parameters.
  • Page 101 K20s off and on, the user is encouraged to try to correct the interference by one or more of the following measures: • Reorient or relocate the receiving antenna. • Increase the separation between the equipment and receiver. • Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.

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