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user manual | Users Manual | 4.94 MiB | June 09 2018 / October 09 2018 | |||
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1 2 | Test Report | June 09 2018 / October 09 2018 |
1 2 | user manual | Users Manual | 4.94 MiB | June 09 2018 / October 09 2018 |
User Manual Version V1.0-20180525 User Manual For David GNSS Receiver 2018 Tersus GNSS Inc. All rights reserved. Sales & Technical Support:
sales@tersus-gnss.com & support@tersus-gnss.com More details, please visit www.tersus-gnss.com Table of Content 1. Overview ....................................................................................................................8 1.1 Introduction ............................................................................................................... 8 1.2 Receiver Features ....................................................................................................... 8 1.3 Brief Introduction of GNSS and RTK ........................................................................... 9 2. Devices in David Package ................................................................................... 11 2.1 Rove Kit Mobile Mode ................................................................................................... 12 2.1.1 David Receiver ............................................................................................... 14 2.1.2 GNSS Antenna ............................................................................................... 14 2.1.3 The 2pin-USB Power Cable ......................................................................... 15 2.1.4 COMM1-bluetooth Module ........................................................................... 16 2.1.5 Bracket for Rover ........................................................................................... 16 2.1.6 GNSS Antenna Connector ........................................................................... 17 2.1.7 COMM2-7pin-USB & DB9 Data Cable ....................................................... 17 2.1.8 Other accessories .......................................................................................... 18 2.2 Rover Kit with 1W Radio Station .............................................................................. 20 2.2.1 RS900C 1W/915MHz Radio ........................................................................ 22 2.3 Rover Kit with 2W Radio Station .............................................................................. 22 2.3.1 RS400L2 2W/460MHz Radio ....................................................................... 24 2.3.2 COMM2-7pin-USB & 5pin Cable ................................................................. 26 2.4 Base Kit Mobile Mode .............................................................................................. 26 2.4.1 Bracket for Base ............................................................................................. 28 2.4.2 Tape Meter ...................................................................................................... 28 2.5 Base Kit with 1W Radio Station ................................................................................ 29 2.6 Base Kit with 2W Radio Station ................................................................................ 30 2.7 Base Kit with 30W Radio Station .............................................................................. 31 2.7.1 30W Radio ...................................................................................................... 33 2.7.2 Other cables ................................................................................................... 34 3. General operation .................................................................................................. 36 3.1 Install the GNSS antenna ............................................................................................... 36 3.2 Power on David ............................................................................................................. 36 1 / 76 3.3 Communication between Android phone and David .................................................... 37 3.3.1 With Wires ....................................................................................................... 38 3.3.2 With an External Bluetooth ........................................................................... 40 3.4 FW Upgrade & Auth code .............................................................................................. 41 3.4.1 Firmware Updates .............................................................................................. 42 3.4.2 Auth Code ............................................................................................................ 45 3.5 Download Files from Internal eMMC Card .................................................................... 46 3.6 Input command directly to the GNSS board ............................................................ 49 4. 5. Introduction of Nuwa ........................................................................................... 51 Specification ........................................................................................................... 53 5.1 David Receiver ............................................................................................................... 53 5.2 ANTENNA AX3702 (HG) ................................................................................................. 56 5.3 1W Radio RS900C .......................................................................................................... 57 5.4 2W Radio RS400L2 ......................................................................................................... 59 5.5 30W Radio RS400L30 ..................................................................................................... 61 6. Typical operating ...................................................................................................... 64 6.1 David as a Rover to receive corrections from Internet ............................................ 64 6.2 David as a Base to transmit corrections to Internet ................................................ 67 6.3 Radios Transmit RTK Corrections between Two Davids .......................................... 70 6.4 Data Collection for Post Processing ......................................................................... 72 Terminology ............................................................................................................. 75 2 / 76 7. List of Figures Figure 1 Outlook of David GNSS receiver .......................................................................... 8 Figure 2 Outline of David System ........................................................................................ 9 Figure 3 Corrections transmitted via Internet ................................................................... 10 Figure 4 Corrections transmitted with radios.................................................................... 10 Figure 5 David in the box .................................................................................................... 11 Figure 6 Field photo 1 - 1 .................................................................................................... 12 Figure 7 Field photo 1 - 2 .................................................................................................... 13 Figure 8 David Receiver ...................................................................................................... 14 Figure 9 AX3702 (HG) antenna .......................................................................................... 15 Figure 10 RF cable ............................................................................................................... 15 Figure 11 2pin-USB Power Cable ...................................................................................... 16 Figure 12 Bluetooth Module ................................................................................................ 16 Figure 13 Bracket for Rover ................................................................................................ 17 Figure 14 GNSS Antenna Connector ................................................................................ 17 Figure 15 COMM2-7pin-USB & DB9 Data Cable ............................................................ 18 Figure 16 USB Type A Male to DB9 Male cable .............................................................. 18 Figure 17 USB Type A Male to USB Type A Male cable ................................................. 19 Figure 18 USB Type A Female to USB (Micro + Type C) OTG cable .......................... 19 Figure 19 Height Measure Accessory ............................................................................... 19 Figure 20 Battery Bank ........................................................................................................ 20 Figure 21 Field Photo 2 - 1 ................................................................................................. 20 Figure 22 Field Photo 2-2 .................................................................................................... 21 Figure 23 RS900C 1W Radio Station ............................................................................... 22 Figure 24 Field Photo 3 - 1 ................................................................................................. 23 Figure 25 Field Photo 3 - 2 ................................................................................................. 23 Figure 26 2W /460MHz Radio ............................................................................................ 25 Figure 27 COMM2-7pin-USB & 5pin Cable...................................................................... 26 Figure 28 Field Photo 4 ....................................................................................................... 27 Figure 29 Bracket for Base ................................................................................................. 28 Figure 30 Tape Meter ........................................................................................................... 29 Figure 31 Field Photo 5 ....................................................................................................... 29 Figure 32 Field Photo 7 - 1 ................................................................................................. 31 Figure 33 Field Photo 7 - 2 ................................................................................................. 32 Figure 34 30W Radio Station ............................................................................................. 33 Figure 35 Power cable for 30W radio ................................................................................ 34 Figure 36 COMM cable for 30W radio .............................................................................. 35 Figure 37 David GNSS receiver installation hook ........................................................... 35 Figure 38 Outline of Android phone to David with Wires ............................................... 38 Figure 39 Outline of Android phone to David with Bluetooth ......................................... 40 Figure 40 Outline of David connected to a Computer .................................................... 41 Figure 41 Download file from eMMC card ........................................................................ 46 Figure 42 Booting up page .................................................................................................. 51 Figure 43 Four Main Windows of Nuwa ............................................................................ 52 3 / 76 Figure 44 Panel of David ..................................................................................................... 54 Figure 45 Pin Definition of the COMM1/COMM2/DC ports ........................................... 55 Figure 46 Outline of Android phone to David with Wire ................................................. 65 Figure 47 Outline of Android phone to David with Wire ................................................. 67 Figure 48 Outline of Base/Rover with Radios .................................................................. 70 Figure 49 Outline of Static Data Collection ...................................................................... 73 4 / 76 List of Tables Table 1 The document / software used in this user manual ............................................. 6 Table 2 Seven David Variants ............................................................................................. 11 Table 3 Devices in rover mobile mode .............................................................................. 13 Table 4 Definition of LEDs ................................................................................................... 14 Table 5 Functions of COMM2-7pin-USB & DB9 Data Cable ......................................... 18 Table 6 Rover Kit with 1W Radio Station .......................................................................... 21 Table 7 LED Definition ......................................................................................................... 22 Table 8 Rover Kit with 2W Radio Station .......................................................................... 24 Table 9 Button Manual ......................................................................................................... 25 Table 10 LED Definition ....................................................................................................... 26 Table 11 Base Kit Mobile Mode .......................................................................................... 27 Table 12 Base Kit with 1W Radio Station ......................................................................... 30 Table 13 Base Kit with 30W Radio Station ....................................................................... 32 Table 14 The Definition of the Control Buttons ................................................................ 33 Table 15 Definition of LEDs ................................................................................................ 34 Table 16 Detailed steps ....................................................................................................... 39 Table 17 Detailed steps ....................................................................................................... 40 Table 18 Preparation for FW update ................................................................................. 42 Table 19 Detailed Steps for FW update ............................................................................ 43 Table 20 Detailed Steps to download files from eMMC card......................................... 46 Table 21 Input commands to the BX306 directly ............................................................. 49 Table 22 David GNSS Performance .................................................................................. 53 Table 23 Pin Definition ........................................................................................................ 55 Table 24 Antenna AX3702 (HG) ......................................................................................... 56 Table 25 Specification for RS900C .................................................................................... 57 Table 26 Specification for RS400L2 .................................................................................. 59 Table 27 RS400L30 Radio Specification .......................................................................... 61 Table 28 Detailed steps for rover receive corrections from Internet ............................. 65 Table 29 Detailed steps for Base transmit corrections to Internet ................................ 68 Table 30 Detailed steps for David with Radios ................................................................ 70 Table 31 Detailed Steps for Static Data Collection .......................................................... 73 Table 32 List of terminology ................................................................................................ 75 5 / 76 Notices The following notices apply to DAVID receiver. Changes or modifications to this equipment not expressly approved by Tersus could void the users authority to operate this equipment or even has risk to damage the DAVID. Conventions The following conventions are used in this manual:
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Information that supplements or clarifies text. A caution that actions, operation or configuration may lead to incorrect or improper use of the hardware. A warning that actions, operation or configuration may result in regulatory noncompliance, safety issues or equipment damage. NUWA is Tersus survey app, four tabs (Project, Device, Survey and Tools) are provided in the Nuwa main window. So, in chapter 0, all the operations in the Survey software will start from these four tabs. In all the figures, a line with two arrows at the two sides means its a cable. A line with one arrow gives the installation direction. Table 1 The document / software used in this user manual Name Description Link Log & Command document Tersus GNSS Center Nuwa Tersus Geomatics Office Document giving all the loggings output from David and all the commands to David Graphical communicate with David tool to Survey application running in the Android platform, David can be configured with Nuwa. Post processing static data tool for https://www.tersus-gnss.com/ass ets/upload/file/20180420120508 17.pdf https://www.tersus-gnss.com/ass ets/upload/file/20180418153351 742.zip https://www.tersus-gnss.com/ass ets/upload/file/20180418153011 5.rar 6 / 76 Support If you have a problem and cannot find the information you need in the product documentation, request technical support using the Tersus website at www.tersus-gnss.com, or mail to support@tersus-gnss.com 7 / 76 1. Overview 1.1 Introduction Tersus DAVID is a cost-efficient, palm-sized GNSS receiver, mainly for the mass survey market, but also for UAV/AGV/Agriculture application. Nuwa, a survey App on Android system, is working with David, which can communicate with an Android platform such as a phone or tablet via USB cable or an external Bluetooth module. The David can work as a base or a rover, it can support real-time RTK positioning as well as saving data for PPK application. Up to 4GB on-board EMMC card makes it easy to save data for PPK. The RS-232 serial port, IP67 standard and the external Bluetooth module can remove most of the inconvenience for field workers. All the operating can be done in the App Nuwa except downloading raw measurement data file, which will be done with Tersus GNSS Center, see Table 1 and section 3.5 Download Files from Internal eMMC Card for detail. Figure 1 Outlook of David GNSS receiver 1.2 Receiver Features Supports GPS L1/L2, BDS B1/B2 and GLONASS G1/G2. Support RTCM2.3/3.x, CMR, CMR+ corrections. 8 / 76 Easy to connect an external powerful radio for longer range. Solution rate can be 5Hz. 20Hz raw measurements output for post processing. The accuracy of carrier phase can be 1mm. On-board 4GB eMMC card for data collection Static post-processing for mm-level accuracy. Bluetooth module makes wireless connection. Input power range is 5 - 12V, connect to battery bank directly. IP67 for water & dust proof, work reliably in harsh condition The Lemo connectors support mis-installation avoidance. 1.3 Brief Introduction of GNSS and RTK Tersus BX306 GNSS receiver is integrated in David, the board is receiving the GNSS signals from satellites and RTK corrections from the base, and is outputting cm-level position, velocity and time. Figure 2 shows David system;
see https://www.tersus-gnss.com/product/bx306-oem-board for more about BX306 receiver. Figure 2 Outline of David System 9 / 76 The RTK corrections are transmitted from a base, which can be a CORS station or a David receiver. The RTK corrections can be transmitted to the rover via Internet or with external radios. Figure 3 Corrections transmitted via Internet Figure 4 Corrections transmitted with radios If RTK corrections are transmitted via Internet, an Android phone will be included in the RTK system to transmit/receive the RTK corrections, see section 6.1 and section 6.2 for detailed operating. 10 / 76 2. Devices in David Package This chapter will give detailed introduction about all the devices in the package. David has seven variants, which are convenient for customers to select per their application. Different accessories are included in each variant. Table 2 gives a brief description of the seven variants. For more about them, refer to section 2.1 to section 2.7. All the seven variants are shipped in a plastic box in Figure 5. Figure 5 David in the box Table 2 Seven David Variants David variants Rover Kit Mobile Mode Rover Kit with 1W Radio Station Rover Kit with 2W Radio Station Base Kit Mobile Mode Base Kit with 1W Radio Station Description The David receiver will receive RTK corrections from a NTRIP caster or a TCP server. The David receiver will receive RTK corrections from an external 1W 915Mhz radios. The David receiver will receive RTK corrections from an external 2W 460MHz radios. The David receiver will output RTK corrections to a NTRIP caster or a TCP server. The David receiver will output RTK corrections to an external 1W 915Mhz radio. 11 / 76 Base Kit with 2W Radio Station Base Kit with 30W Radio Station The David receiver will output RTK corrections to an external 2W 460MHz radio. The David receiver will output RTK corrections to an external 30W 460MHz radio.
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1. Rover Kit Mobile Mode and Base Kit Mobile Mode can work independently. 2. Rover Kit with 1W Radio Station must work with Base Kit with 1W Radio Station. 3. Rover Kit with 2W Radio Station must work with Base Kit with 2W Radio Station or Base Kit with 30W Radio Station. 2.1 Rove Kit Mobile Mode In this variant, the David will be connected to an Android phone with Bluetooth module or with cables. Tersus Survey Nuwa App will run in the Android phone to receive RTK corrections from a NTRIP caster or a TCP server. Refer to section 6.1 for detailed operation. 1 2 3 Figure 6 Field photo 1 - 1 12 / 76 4 5 6 7 8 Figure 7 Field photo 1 - 2 Table 3 Devices in rover mobile mode Devices Number Items in the field photos David GNSS receiver GNSS antenna GNSS antenna connector GNSS antenna cable 2pin-USB power cable COMM1-bluetooth module COMM2-7pin-USB & DB9 Data cable USB Type A Male to USB Type A Male cable USB Type A Female to USB(Micro +
Type C) OTG cable USB Type A Male to DB9 Male cable Ranging pole Height measure accessory Bracket for rover Battery bank 1 1 1 1 1 1 1 1 1 1 1 1 1 1 5 1 Not in the field photo, refer to section 2.1.6 for detail. 3 8 6, refer to 2.1.4 Not in the field photo, refer to section 2.1.7 Not in the field photo, refer to Figure 17 Not in the field photo, refer to Figure 18 Not in the field photo, refer to Figure 16 2 Not in the field photo, See Figure 19. 4, see section 2.1.5 7, see Figure 20 and 3.2 Power on David 13 / 76 2.1.1 David Receiver David has four interfaces, see Figure 8 David Receiver. COMM1 port COMM2 port Antenna input DC port Figure 8 David Receiver Davids DC is for power input, COMM1 port is for COM1 and CAN ports, and COMM2 port is for COM2 and USB ports, see chapter 5 for detail. Table 4 Definition of LEDs LED Colour Description PWR RED ON: the David is power on. PV GREEN ON: David in RTK solution. Blink: David in Float solution OFF: David in other position types. Please see section 3.2 Power on David for more about the booting up procedure. Refer to Chapter 5 for the specification of David receiver and the detailed definition of COMM1, COMM2 and DC ports. 2.1.2 GNSS Antenna GNSS antenna is used to receive the RF signal from the satellites. AX3702
(HG) is provided in the package, which must be connected to the David with the RF cable in the package. 14 / 76 Figure 9 AX3702 (HG) antenna If an antenna from other companies will be used, contact Tersus to get permission, or the David may not work as its expected. Figure 10 RF cable 2.1.3 The 2pin-USB Power Cable The power cable is used to connect a battery bank to the DC port of David. 15 / 76 Figure 11 2pin-USB Power Cable 2.1.4 COMM1-bluetooth Module This Bluetooth module will use the COM1 port of David. Figure 12 Bluetooth Module The Bluetooth can only be installed to the COMM1 port of David. The SSID for this Bluetooth module is BT420A-xxxxx, where xxxxx is the last 5 digits of the Bluetooth serial number, which is printed on the Bluetooth module. No password is needed to pair with it. 2.1.5 Bracket for Rover Bracket for rover is used to fix all the devices on the ranging pole, which bring much convenience to field staffs. 16 / 76 Figure 13 Bracket for Rover 2.1.6 GNSS Antenna Connector The GNSS antenna connector is used to install the GNSS antenna or the 30W radio station antenna to a tripod. Figure 14 GNSS Antenna Connector 2.1.7 COMM2-7pin-USB & DB9 Data Cable The COMM2-7pin-USB & DB9 Data Cable has three functions:
17 / 76 Table 5 Functions of COMM2-7pin-USB & DB9 Data Cable 1. Connect to an external 1W radio module. 2. Connect to USB Type A Male to DB9 Male cable (see Figure 16) to download file saved on the internal eMMC card, refer to section 3.5 Download Files from Internal eMMC Card;
3. Connect to USB Type A Male to USB Type A Male cable (see Figure 17) and USB Type A Female to USB (Micro +Type C) OTG cable (see Figure 18) to connect the Android phone with David, refer to section 3.3.1. Figure 15 COMM2-7pin-USB & DB9 Data Cable
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The COMM2-7pin-USB cable can only be installed into the COMM2 port of David. 2.1.8 Other accessories USB Type A Male to DB9 Male cable, USB Type A Male to USB Type A Male cable, USB Type A Female to USB (Micro + Type C) OTG cable and Height Measure Accessory are included in this variant. Figure 16 USB Type A Male to DB9 Male cable driver for the cable above can be downloaded 18 / 76 The https://www.ugreen.com/drivers/list-USB_To_RS232_Driver-en.html Figure 17 USB Type A Male to USB Type A Male cable Figure 18 USB Type A Female to USB (Micro + Type C) OTG cable The height measure accessory is used to determine the height of the antenna with higher accuracy. Figure 19 Height Measure Accessory A battery bank is used to power on the David, its not included in the package, and has to be provided by the customers, see section 3.2 Power on David for 19 / 76 more detail. Figure 20 Battery Bank 2.2 Rover Kit with 1W Radio Station In this variant, the David will be connected to an external 1W radio to receive RTK corrections from a base. With an external Bluetooth or with cables, the David will be connected to an Android phone, which is running Tersus Survey Nuwa to configure the David.
! Rover Kit with 1W Radio Station must work with Base Kit with 1W Radio Station.
! Rover Kit with 1W Radio Station can support Rover mobile mode. 1 2 3 Figure 21 Field Photo 2 - 1 20 / 76 11 10 4 5 6 7 8 9 Figure 22 Field Photo 2-2 Table 6 Rover Kit with 1W Radio Station Devices Number Items in the field photos David GNSS receiver GNSS antenna GNSS antenna connector GNSS antenna cable 2pin-USB power cable COMM1-Bluetooth module COMM2-7pin-USB & DB9 data cable USB Type A Male to USB Type A Male cable USB Type A Female to USB(Micro +
Type C) OTG cable USB Type A Male to DB9 Male cable RS900C 1W/915MHz radio RS900C radio antenna Ranging pole Height measure accessory Bracket for rover Battery bank 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 7 1 Not in the field photo, refer to section 2.1.6 for detail. 3 8 10, refer to 2.1.4. 11, refer to section 2.1.7. Not in the field photo, refer to Figure 17 Not in the field photo, refer to Figure 18 Not in the field photo, refer to Figure 16 5, refer to section 2.2.1. 4 2 Not in the field photo, See Figure 19. 6, see section 2.1.5 9, see Figure 20 and 3.2 Power on David 21 / 76 2.2.1 RS900C 1W/915MHz Radio This radio can work at 915MHz frequency only, the output power of this radio is 1W and the typical range is 3km. Refer to chapter 5 for detailed specification. LED Antenna Interface Data Interface Figure 23 RS900C 1W Radio Station Description Table 7 LED Definition LED P-S When power on, this LED will blink RED once and keep off. If data is transmitting, this LED will blink RED. If data is receiving, this LED will blink GREEN. 2.3 Rover Kit with 2W Radio Station In this variant, the David will be connected to an external 2W radio to receive RTK corrections from a base. With an external Bluetooth or with cables, the David will be connected to an Android phone, which is running Tersus Survey Nuwa to configure the David.
! Rover Kit with 2W Radio Station can work with Base Kit with 2W Radio Station or Base Kit with 30W Radio Station.
! Rover Kit with 2W Radio Station can support Rover mobile mode. 22 / 76 Figure 24 Field Photo 3 - 1 1 2 3 4 5 6 7 8 9 Figure 25 Field Photo 3 - 2 23 / 76 11 10 Table 8 Rover Kit with 2W Radio Station David variants Number Items in field photos David GNSS receiver GNSS antenna GNSS antenna connector GNSS antenna cable 2 Pin-USB power cable COMM1-bluetooth module COMM2-7pin-USB & DB9 Data cable USB Type A Male to USB Type A Male cable USB Type A Female to USB(Micro + Type C) OTG cable USB Type A Male to DB9 Male cable COMM2-7pin-USB & 5pin cable
(0.35m) RS400L2 2W/460MHz radio 2W/460MHz radio antenna Ranging pole Height measure accessory Bracket for rover Battery bank 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 7 1 Not in the field photo, refer to section 2.1.6 for detail. 3 9 10, refer to 2.1.4 Not in the field photo, refer to section 2.1.7. Not in the field photo, refer to Figure 17 Not in the field photo, refer to Figure 18 Not in the field photo, refer to Figure 16 11, refer to 2.3.2 5, refer to 2.3.1 4 2 Not in the field photo, See Figure 19. 6, see section 2.1.5 8, see Figure 20 and 3.2 Power on David 2.3.1 RS400L2 2W/460MHz Radio This radio can work at 460MHz frequency, the max. output power of this radio is 2W and the typical range is 5km. Refer to chapter 5 for detail specification. 24 / 76 Antenna Interface Channel Button Power Button Protocol Button Table 9 Button Manual Current Channel T/R Current Power ON/OFF Current Protocol Data Interface Figure 26 2W /460MHz Radio Description Button Channel Button Power Button Protocol Button Press once, the current channel will be shown. Press again, the current channel will increase 1, 0~ 9 channels are for use. Press once to select the output power, which can be 1W or 2W. Protocol button is pressed to switch the protocol between TP
(Transparent EOT protocol) , TT (TT450S protocol) and TS
(Tersus protocol)
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Two 2W radios must have the same protocol and the same channel frequency before they can communicate each other. 25 / 76 Table 10 LED Definition LED Description H/L T/R TP/TT/TS ON RED: 2W output is selected, GREEN: 1W output is selected. Blink RED: data is transmitting. Blink GREEN: data is receiving. BLUE: Transparent protocol is selected. RED: TT450S protocol is selected. BLUE&RED: Tersus protocol is selected. Is solid on after the power is on. 2.3.2 COMM2-7pin-USB & 5pin Cable The COMM2-7pin-USB & 5pin Cable is used to connect the David to the 2W radio station & an Android phone, or connect the David to the 30W radio station & an Android phone. The cables length can be 0.35m or 1m in different variants. Figure 27 COMM2-7pin-USB & 5pin Cable COMM2-7pin-USB & 5pin Cable can only be installed into the COMM2 port of David. 2.4 Base Kit Mobile Mode In this variant, the David, working as a base, will transmit RTK corrections to a NTRIP caster or a TCP sever. The David will be connected to an Android phone with an external Bluetooth or with cables. Tersus Survey Nuwa is running in the Android phone to configure the David. 26 / 76
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Base Kit Mobile Mode can work independently or work with Rover Kit Mobile Mode. 1 2 3 4 5 6 8 7 Figure 28 Field Photo 4
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The tripod, the battery bank and the tribrach are not included in the package. Table 11 Base Kit Mobile Mode Devices David GNSS receiver GNSS antenna GNSS antenna connector GNSS antenna cable 2 Pin-USB power cable COMM1-bluetooth module COMM2-7pin-USB & DB9 Data cable USB Type A Male to USB Type A Male cable USB Type A Female to USB(Micro +
Type C) OTG cable USB Type A Male to DB9 Male cable Number Items in field photo 1 1 1 1 1 1 1 1 1 1 4 1 2 7 6 8, refer to 2.1.4 Not in the field photo, refer to section 2.1.7. Not in the field photo, refer to Figure 17 Not in the field photo, refer to Figure 18 Not in the field photo, refer to Figure 16 27 / 76 Tape meter Height measure accessory Bracket for base Battery bank 2.4.1 Bracket for Base 1 1 1 1 See Figure 30 Not in the field photo, See Figure 19. 3, see Figure 29 5, see Figure 20 and 3.2 Power on David This bracket is hooked on the tripod and all the devices in the field (an Android phone, a radio, a David and a battery bank) can be installed on it, which brings much convenience for field job. Figure 29 Bracket for Base 2.4.2 Tape Meter Working with height measure accessory, the tape meter can give position of a point on ground with mm-level accuracy. 28 / 76 Figure 30 Tape Meter 2.5 Base Kit with 1W Radio Station In this variant, the David, working as a base, will transmit RTK corrections to an external 1W radio. The David will be connected to an Android phone with cables or with the Bluetooth module. Tersus Survey Nuwa is running in the Android phone to configure the David.
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Base Kit with 1W Radio Station can work with Rover Kit with 1W Radio Station only.
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Base Kit with 1W Radio Station can support Base mobile mode. 9 8 7 1 2 3 4 5 6 Figure 31 Field Photo 5 29 / 76
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The tripod, the tribrach and the battery bank are not included in the package. Table 12 Base Kit with 1W Radio Station Devices David GNSS receiver GNSS antenna GNSS antenna connector GNSS antenna cable 2 Pin-USB power cable COMM1-bluetooth module COMM2-7pin-USB & DB9 Data Cable USB Type A Male to USB Type A Male cable USB Type A Female to USB(Micro +
Type C) OTG cable USB Type A Male to DB9 Male cable RS900C 1W/915MHz radio 1W/915MHz radio antenna Tape meter Height measure accessory Bracket for base Battery bank 2.6 Base Kit with 2W Radio Station TBD Number Items in field photo 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 5 1 9 2 7 Not in the field photo, refer to 2.1.4 8 Not in the field photo, refer to Figure 17 Not in the field photo, refer to Figure 18 Not in the field photo, refer to Figure 16 4 3 See Figure 30Figure 30 Tape Meter Not in the field photo, See Figure 19. 6 see Figure 20 and 3.2 Power on David 30 / 76 2.7 Base Kit with 30W Radio Station In this variant, the David, working as a base, will transmit RTK corrections to an external 30W radio. The David will be connected to an Android phone with cables or with the Bluetooth module. Tersus Survey Nuwa is running in the Android phone to configure the David.
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Base Kit with 30W Radio Station can work with Rover Kit with 2W Radio Station only.
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Base Kit with 30W Radio Station can support Base mobile mode. 4 1 2 3 Figure 32 Field Photo 7 - 1 31 / 76 5 4 7 8 9 10 Figure 33 Field Photo 7 - 2 13 12 11 10
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The two tripods and the tribrach in Figure 32 and Figure 33 are not included in the package. Table 13 Base Kit with 30W Radio Station Devices Number Items in field photos David GNSS receiver GNSS antenna GNSS antenna cable GNSS antenna connector COMM1-bluetooth module COMM2-7pin-USB & DB9 Data Cable USB Type A Male to USB Type A Male cable USB Type A Female to USB(Micro +
Type C) OTG cable USB Type A Male to DB9 Male cable COMM2-7pin-USB & 5pin Cable (1m) Power cable for 30W radio COMM cable for 30W radio RS400L30 30W radio 30W radio antenna 1 1 1 2 1 1 1 1 1 1 1 1 1 1 12 5 7 4 Not in the field photo, refer to 2.1.4 Not in the field photo, refer to section 2.1.7. Not in the field photo, refer to Figure 17. Not in the field photo, refer to Figure 18 Not in the field photo, refer to Figure 16. 10, refer to Figure 27. 9, refer to Figure 35 11, refer to Figure 36 8 1, see Figure 34 32 / 76 Metal plate for radio antenna Telescopic pole for radio antenna Tape meter Height measure accessory David GNSS receiver installation hook 2pin-USB Power Cable 2.7.1 30W Radio 1 1 1 1 1 1 3 2 Not in the field photo, See Figure 30 Tape Meter Not in the field photo, See Figure 19. 13, see Figure 37 Not in the field photo, see Figure 11 The 30W radio is used when a longer baseline is required. The typical range is 15km, see chapter 5 for detail specification. Figure 34 30W Radio Station Table 14 and Table 15 give the definition of the control buttons and the LED, respectively. Table 14 The Definition of the Control Buttons Buttons Function Press 3s to power on or power off the radio station. To select the channel Press 3s to select the RF output power ON/OFF ARROW UP/DOWN RF PWR 33 / 76 Table 15 Definition of LEDs LEDs Description ON/OFF TX/RX Channel BAT CAP RF PWR RED: the input voltage is normal. Blink RED: the input voltage is out of the limits. Blink RED: the radio is transmitting. Blink GREEN if the radio is receiving. Show the current channel Show the battery left. Show the current RF output power:
OFF: 30W BLUE: 20W RED: 10W RED+BLUE: 5W 2.7.2 Other cables Figure 35 Power cable for 30W radio 34 / 76 Figure 36 COMM cable for 30W radio Figure 37 David GNSS receiver installation hook 35 / 76 3. General operation The general operation of David is related to the Tersus Survey Nuwa software, which will be introduced in the software manual. This chapter only describes how to do the hardware connection. To make David work, the customer must provide qualified power to David (refer to chapter 5 for requirement), power to the 30W radio
(if 30W radio is used, refer to chapter 5 for detail) and an Android phone to run Tersus Survey Nuwa software. David may be damaged if devices from other companies are used to replace the ones in the package. And the warranty may be void if that happen. 3.1 Install the GNSS antenna Connect the antenna to David with the RF cable. Please ensure the connectivity is reliable.
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The ideal place for a GNSS antenna is a point without GNSS signals blockage from horizon to horizon and is far away from any potential interfering source. 3.2 Power on David The input voltage to David is 5 12 VDC. Its highly recommended to power on David with an USB port (5VDC and 2A or more current output) from a battery bank with the power cable in the package, or the David may not boot up successfully. After power on, the PV LED will be ON for 3 to 5 seconds, then it will be OFF, which means the David is booting up successfully. If the PV LED is NOT acting as the above, it means the David is NOT booting up successfully. 36 / 76 If other power than a battery bank is used to power on David, the customer has to make a power cable themselves and take all the risks involved. The working time of David depends on the capacity of the battery bank. The following formula can be used to estimate the operating time (assume the output voltage is 5V):
If no radio or an external 30W radio is connected to the David:
Time (hour) = capacity (mA.Hour) *5 / (1000 * 3.2) If 1W radio is connected to the David:
Time (hour) = capacity (mA.Hour) *5 / (1000 * (3.0+3.2)) If 2W radio is connected to the David:
Time (hour) = capacity (mA.Hour) *5 / (1000 * (6.5+3.2))
!
1) Its highly recommended the capacity of the battery bank is 10,000mA.H or more. 2) The working time above are only theoretical values at 25C temperature. But according to our experience, the real working time may be 2/3 of even less of above values. 3.3 Communication between Android phone and David David can communicate with an Android phone with wires or with Bluetooth. 37 / 76 3.3.1 With Wires Figure 38 Outline of Android phone to David with Wires Three cables are used to connect the COMM2 port of David to the USB port of the Android phone. They are:
COMM2-7pin-USB & DB9 Data Cable or COMM2-7pin-USB & 5pin cable. USB Type A Male to USB Type A Male cable USB Type A Female to USB (Micro + Type C) OTG cable The Android phone will NOT be charged when its connected to David with wires. 38 / 76
!
!
Table 16 Detailed steps 1. Connect the Davids COMM2 port to the USB port of the Android phone with cables. 2. Connect the antenna to David with the RF cable (optional). 3. Power on the David with a battery bank. 4. Run Nuwa, Device ->Device Connect 5. Connect Type USB 6. Press Connect Config to update accordingly. 7. Press Connect to enable the communication with the David. 39 / 76 3.3.2 With an External Bluetooth Figure 39 Outline of Android phone to David with Bluetooth All the seven variants can support connection with Bluetooth as well as with cables.
!
Table 17 Detailed steps 1. Install the Bluetooth module to the Davids COMM1 port. 2. Connect the antenna to David with the RF cable (optional). 3. Power on the David with a battery bank. 4. Run Nuwa, Device ->Device Connect 40 / 76 5. Bluetooth is selected for Connect Type 6. Connect Config -> Search. The SSID is BT420A-xxxxx. No password is needed to pair with it. 7. Press Connect to enable the communication with the David.
!
You can remove a Bluetooth device from the Available Device list by pressing it for several seconds. 3.4 FW Upgrade & Auth code Figure 40 Outline of David connected to a Computer 41 / 76 Table 18 Preparation for FW update Hardware Installation 1. Install the USB Type A Male to DB9 Male cable to a computers USB port. The cable will be mapped to a serial port, check the port number in the Device Manager of the computer. 2. Install the COMM2-USB + DB9 cable to the COMM2 port of the David. 3. Connect the two cables together. 4. Power on the David with the computers USB port or with an external battery bank. 5. Run Tersus GNSS Center, fill the parameters in the Config page, press OK to communicate with the David.
!
The default baud rate for the serial port is 115200, which will change to 921600 temporarily during FW updates by Tersus GNSS Center, see section 3.4.1 Firmware Updates for detail. 3.4.1 Firmware Updates If a new firmware update is released, it will be available on the Tersus web site https://www.tersus-gnss.com/software, or you can get the updates from Tersus support. The FW version of David receiver can be updated in field. Connect the David with Tersus GNSS Center, and input LOG VERSION, the following information will be output:
42 / 76 VERSION COM2 0 0.0 UNKNOWN -1 0.000 00000000 0 20161214
<
<
BX306 G2SB2G2 008001174910000171 0021 20161123 3.0 Apr 1 24 2018 12:23:48 0021 is the FW version. See VERSION in Tersus GNSS Log & Command Reference document for more detail about this log. Table 19 Detailed Steps for FW update Hardware Installation Follow Figure 40 and the detailed steps in Table 18 to create communication between a David receiver and Tersus GNSS Center. Software Configure 1. Press Stop button to stop the communication between the computer and the receiver. 2. Select Tools -> UpdateFirmware 3. Select the upgrade file, when a file is selected, the file will be shown in the 43 / 76 Update File bar. PORT is the PCs serial port for the USB Type A Male to DB9 Male cable. 921600 is recommended for the baud rate. Press Next 4. The following figure shows the FW is upgrading 5. After the FW is upgraded successfully, The following show 6. Press OK and Finish buttons to close the FW update window. Power cycle 44 / 76 the receiver. 7. After the board is booted, the FW version can be confirmed by connecting to the receiver and input LOG VERSION and check the FW version. After the FW is updated successfully, the David receiver must be power off for 5 seconds and power on again, or the David will not work. 3.4.2 Auth Code An auth code is used to determine the features and valid time for a David receiver. If the auth code is expired, the receiver will not work. And a license requirement is output from all the ports. Before you contact Tersus for new auth code, please:
1) Follow Figure 40 and the detailed steps in Table 18 to create communication between a David receiver and Tersus GNSS Center. 2) Input:
LOG VERSION //get the version info LOG AUTHLIST //get the auth list info to the David receiver, and send all the output info to Tersus support. If the auth code application is approved by Tersus, you will get a reg.txt file, in which AUTHCODE command with the code will be given, copy all of them and input them to the David receiver in the console window of Tersus GNSS Center, or 45 / 76 3) Connect the David with Nuwa App, go to Device -> Device Info, the right window will be shown 4) Confirm the reg.txt file is copied to the FilePath. 5) The auth code will be given in the window below, press Register to input the new auth code. 3.5 Download Files from Internal eMMC Card The files saved on Davids internal eMMC card can be copied to the computer via a serial port. Figure 41 Download file from eMMC card Table 20 Detailed Steps to download files from eMMC card Hardware Installation 1. Follow Figure 40 and steps 1-5 in Table 18 to create communication between a David receiver and Tersus GNSS Center. 46 / 76 Software Configure 2. Communicate the receiver with Tersus GNSS Center, input:
COM COM2 460800 // Configure baud rate of COM2 to 460800 3. Stop communicate with the David, re-communicate with it with 460800 4. Input LOGFILE CLOSE //close data collection 5. Input UNLOGALL //Stop outputting all the loggings 6. Press Tools -> Downloadfile 7. All the files on the eMMC card will be shown; the files can be deleted in this page. Select the file to be downloaded, press Download button, the following window will be shown. 47 / 76 8. After the file is downloaded successfully, the follow info will be given in the console window. 9. Go to Config -> Save Option tab to check where the file is saved. 48 / 76
! The downloading rate is about 2M/min, the downloading time can be estimated based on it. 3.6 Input command directly to the GNSS board Users can input commands to the BX306 board inside the David directly, the steps are given in Table 21. Table 21 Input commands to the BX306 directly Hardware Installation Follow section 3.3.1 and section 3.3.2 to connect the Android phone to the David. Software Configure 49 / 76 1) Run Nuwa and go to Device ->
Data Terminal 2) The page at the right will be shown; users can input all the commands in the Log & Command document in the window. 3) Then press Send button, the command will be input to the BX306 board. 50 / 76 4. Introduction of Nuwa Nuwa is the Tersus survey app, which is running in the Android phone. All the configure commands for the David are input with Nuwa, and all the operation of David are done with Nuwa. Four tabs menus are provided in the main window. They are Project, Device, Survey and Tools. See the Nuwa user manual for detail. Figure 42 Booting up page
!
Tersus Survey Nuwa is supporting Android system; no IOS version is available now. The minimal requirements for Android phone:
1) The phone must support OTG, otherwise, it cant be connected to David with cables, but only with Bluetooth. 2) The Android system is 6.0 or later version.
!
1) There are lots of Android versions in market, so an Android phone meeting the minimal requirements above may still have problems to run Nuwa. 2) Nuwa is tested with: Huawei Mate 7/Honor 7, Oppo A57, Vivo X9 and Samsung S8. 3) Its highly recommended that an Android phone with better hardware performance than those above is used to run Nuwa. 51 / 76 Figure 43 Four Main Windows of Nuwa 52 / 76 APPENDIX A 5. Specification 5.1 David Receiver Table 22 David GNSS Performance GNSS Performance Single positioning Position Accuracy RTK Positioning Static post processing 1.5m RMS (Horizontal) 3.0m RMC (Vertical) 10mm+1ppm (Horizontal) 15mm+1ppm (Vertical) 3mm+0.5ppm (Horizontal) 5mm+0.5ppm (Vertical) Time to First Fix Reacquisition Data Rate Time Accuracy Velocity Accuracy Measurement Precision Size Weight Cold Start: <50s Warm Start: <30s 0.5 s L1 (typical) 1.0 s L2 (typical) Measurements Position 20ns RMS 0.03m/s RMS 10cm C/A Code P Code(zenith direction) 10cm Carrier 1mm direction) 20Hz 5Hz Phase(zenith Physical Description 104*65*31 mm3 (David only) 250g (David only) Mechanical Drawing 53 / 76 ENVIRONMENTAL Operating Temperature -40C to +85C
-55C to +95C Storage Temperature MIL-STD-810G, Method 507.5 Procedure II (95%) Humidity Random Vibration MIL-STD 810G Method 514.6, Category 24 (7.7 g RMS) IEC 60068-2-6 (5 g) ISO 9022-31-06 (25 g) Operating: MIL-STD-810G, Method 516.6, Procedure I (40 g) Non-operating: MIL-STD-810G, Method 516.6, Procedure V (75 g) IP67 Sinusoidal Vibration Bump Shock Water & dust proof Input Voltage Power Consumption Power Requirement
+5 12 VDC 3.2W without external Radio 6.2W with external 1W radio RS900C 9.8W with external 2W radio RS400L2 Figure 44 Panel of David 54 / 76 Table 23 Pin Definition Connector Pin No. COMM1 LVTTL PWR GND TXD1 RXD1 GND CAN_H/PPS1 CAN_L/EVENT1 1 2 3 4 5 6 7 COMM2 RS-232 PWR GND TXD2 RXD2 GND USB D+
USB D-
DC PWR GND Note 1: The default configure for pin6 and pin7 in COMM1 port are CAN_H and CAN_L. The two signals are multiplexed with PPS and EVENT. This feature is related to FW release, contact support@tersus-gnss.com for confirmation. Figure 45 Pin Definition of the COMM1/COMM2/DC ports 55 / 76 5.2 ANTENNA AX3702 (HG) Table 24 Antenna AX3702 (HG) Antenna Specification Tracking signals Impedance Polarization Axial Ratio Azimuth Coverage Output VSWR Peak Gain Phase Center Error LNA Gain Noise Figure VSWR Input Voltage Operating Current Ripple Differential transmission delay GPS L1/L2/L5; BDS B1/B2/B3;
GLONASS L1/L2 50 Ohm RHCP 3dB 360 2.0 5.5dBi 2mm LNA Specification 402dB 2.0dB 2.0 3.3~12V DC 45mA 2dB 5ns Physical Description Dimension Signal Connector Installation connector 150*63.7mm TNC Female 5/8 x 11 Environment Operating temperature -40C - +85C
-55C - +85C Storage temperature Damp 45% - 95%
Mechanical Drawing 56 / 76 5.3 1W Radio RS900C Table 25 Specification for RS900C Working Frequency Data level Serial port baud rate Data interface Size Operating Temperature Antenna impedance Input voltage Power consumption General Specification 915MHz RS-232 115200 DB-9 male 78 * 51.5 * 26.4 mm3
-40 - +85 50 DC 5V 12V 3.0W (transmitting) 180mW (receiving) Receiver Specification Sensitivity Spurious response immunity Intermodulation immunity Stand by current saturation Distortion Error rate
-123dBm (20kbps) 65dB 60dB 65mA 90dB 5 0.001%
Transmission specification Modulation Transmission power Modulation distortion Maximum frequency deviation Transmission current Carrier frequency tolerance Spurious frequency components Sleep current QPSK/BPSK
>1000mW 3 5KHz 1000mA/DC 5V 5*10-6
-65dB 5uA
>2km (@1Mbps)
>5Km (@20Kbps) Working range s Mechanical Drawing 57 / 76 58 / 76 5.4 2W Radio RS400L2 Table 26 Specification for RS400L2 Interface Input voltage Power consumption in transmitting Power consumption in receiving Communication Interface 9.6kbps in the air Lemo connector, RS-232, baud rate 38400 Voltage and Power DC 5 12V 6.5W (DC 12V, transmitting power 2W) 4WDC 12V, transmitting power 1W
<400mW (DC 5V) External Antenna Impedance VSMR Interface 50 Ohm 1.5 MCX female Modulation & Demodulation Modulation Data rate in air RF sensitivity Code sensitivity Protocol GMSK 9600bps@25KHz Better than 13dB@-119dBm
-116 dBm BER 10E-59600bps Transparent EOT, TT450S and Tersus Frequency range Channel width Frequency stability Channel number Adjacent channel selectivity Transmission power RF Specification 10MHz (457MHz 467MHz) 25KHz 1.5 ppm(25C) 10 configurable channels 60dB High power 2W Low power 1W 33.5 0.5dBm@DC5.5V 30.0 0.5dBm@DC5.5V Temperature Environment
-30C - +60C (operating)
-40C - +85C (storage) Mechanical Size 107 * 62 * 26.6 59 / 76 60 / 76 5.5 30W Radio RS400L30 Table 27 RS400L30 Radio Specification DTE-DCE Interface Communication Interface 9.6kbps in the air Serial port: RS-232, Band rate 38400 Interaction Power level Charging Alarm Battery Monitor PWR LED: OFF High (about 30W) 2nd high (about 20W) PWR LED: BLUE PWR LED: RED Middle (about 10W) PWR LED: RED&BLUE blink Low (about 5W) DC 11.60 0.2V B4 B3 B2 B1 Power In/Out DC 13.00 0.2V DC 12.50 0.2V DC 12.00 0.2V DC 11.60 0.2V Input voltage DC 10.5 15.0V Power in transmitting
(typical) Transmitting prohibition voltage Power in receiving
(typical) 85W (DC 12.8V, 30W output) 65W (DC 12.8V, 20W output) 46W (DC 12.8V, 10W output) 33W (DC 12.8V, 5W output) DC 11.40 0.2V (default) DC 10.50 11.5V (configure range)
<3W (Input voltage DC 12.8V) Input Impedance VSWR Interface Modulation Data rate in air RF sensitivity Decode sensitivity Antenna 50 Ohm 1.5 TNC female Modulation/Demodulation GMSK 9600bps@25KHz Better than 13dB@-119dBm
-116 dBm BER 10E-59600bps Protocol Transparent EOT, SOUTH Radio Frequency range 457 467MHz Channel width 25KHz Stability 1.5ppm (25C) 61 / 76 Channel number 116 (channel 00 15 are configurable, channel 16 116 are fixed) Adjacent channel selectivity 60dB Temperature Dust proof and waterproof Size Weight Data port Environment Operating Storage IP68
-30 +60C
-40 85C Physical Description 165 * 74 * 185.5 mm3 with plastic protector About 1.75Kg LEMO EGA.0B.305 Power input port LEMO EGG.1B.302 Installation Hook Mechanical Drawing Data Port Signal definition Pin 1: GND Pin 2: GND Pin 3: Output power (3A, same voltage as the input) Pin 4: RXD Pin 5: TXD 62 / 76 Power input port Pin 1: GND Pin2: PWR input 63 / 76 APPENDIX B 6. Typical operating The LEMO connectors in the David system support mis-installation avoidance. But its highly recommended to double check the module/cable before they are installed to the correct ports. Mis-installation with force can damage the David.
!
The following may be used for David system:
A battery bank for David An Android phone An external large capacity power if a base kit with 30W or with 2W radio station is used. A tripod (optional). A tribrach (optional) Its highly recommended that a David base variant is installed on a tripod. 6.1 David as a Rover to receive corrections from Internet
!
From section 6.1 to section 6.4, David and Android phone are connected with cables; refer to section 3.3.2 for the connection with Bluetooth. 64 / 76 Figure 46 Outline of Android phone to David with Wire Three cables are used to connect the COMM2 port of David to the USB port of the Android phone. They are:
COMM2-7pin-USB & DB9 Data Cable or COMM2-7pin-USB & 5pin cable. USB Type A Male to USB Type A Male cable USB Type A Female to USB (Micro + Type C) OTG cable
!
Table 28 Detailed steps for rover receive corrections from Internet Hardware Installation 1. Install the GNSS antenna on a tripod or on a ranging pole at a point interested. 2. Connect the antenna to David with the RF cable. 3. Connect the Davids COMM2 port to the USB port of the Android phone with cables. 4. Power on the David with a battery bank. Software Configure 5. Run Nuwa, Device ->Device Connect 65 / 76 6. Connect Type USB 7. Press Connect Config to update accordingly. 8. Press Connect to enable the the communication with David. 9. Go back to: Device -> Rover Station 66 / 76 10. Select PDA Network+Default Server1, to configure the parameters about the Network. then press Detail 11. Select Network for Data Link 12. If Ntrip is selected for Protocol IP, Port, type, please Username, Password and Mount Point. input:
13. If TCP is selected for Protocol type, please input: IP and Port. 14. Go back to the Rover Station page and press Start. 15. If all the configure above are correct, the right page will show the receiving RTK corrections. rover is 6.2 David as a Base to transmit corrections to Internet Figure 47 Outline of Android phone to David with Wire
!
Three cables are used to connect the COMM2 port of David to the USB 67 / 76 port of the Android phone. They are:
COMM2-7pin-USB & DB9 Data Cable or COMM2-7pin-USB & 5pin cable. USB Type A Male to USB Type A Male cable USB Type A Female to USB (Micro + Type C) OTG cable
!
Its highly recommended that a base David is installed on a tripod. Table 29 Detailed steps for Base transmit corrections to Internet Hardware Installation 1. Install the tripod at a point interested. 2. Install a tribrach on the tripod, adjust it to horizontal level and install the GNSS antenna and the antenna connector on it. 3. Connect the antenna to David with the RF cable. 4. Connect the Davids COMM2 port to the USB port of the Android phone with cables. 5. Power on the David with a battery bank. Software Configure 6. Run Nuwa, Device ->Device Connect 7. Connect Type USB 8. Press Connect Config to update accordingly. 9. Press Connect to enable the the communication with David. 10. Go back to: Device -> Base Station 68 / 76 11. Select Auto Startup+PDA Network+Default Server1+Auto, then press Detail to configure the parameters about the Networ 12. If Auto Start is selected for Start Way, go to Step 14. 13. If Manual Start is selected for Start Way, input the bases position manually. 14. If Ntrip protocol is selected, please input: IP, Port, Username, Password and Mount Point. 15. If TCP is selected for Data Link, please input: IP and Port. 16. Go back to the Base Station page and press Start 17. If all the configure above are correct, the right page will show the base is transmitting RTK corrections. 69 / 76 6.3 Radios Transmit RTK Corrections between Two Davids
!
1W base must work with 1W rover. 2W base must be work with 2W rover. 30W base must work with 2W rover. Only 30W base and 2W rover are given in this section since the other two configure are very simple. BASE Rover Figure 48 Outline of Base/Rover with Radios Table 30 Detailed steps for David with Radios Hardware Installation for the 30W Base 1. Install the two tripods at the points interested. 2. Install the 30W radio antenna with the telescopic pole for radio antenna. 3. Refer to Figure 32, install the metal plate, the GNSS antenna connector and the 30W radio antenna on one tripod. 4. Install a tribrach on the other tripod, adjust it to horizontal level and install the GNSS antenna and the antenna connector on it. 5. Connect the antenna to the base David with the RF cable. 6. Connect the Davids COMM2 port to the USB port of the Android phone with cables. 7. Install the RF cable from the telescopic pole to the 30W radio station. 8. Connect the COMM cable to 30W radio, and to the base Daivds DC port, respectively. Then connect it to the power cable for 30W radio. 9. Double check the cables above and connect the power cable to the external battery. Hardware Installation for the 2W Rover 10. Install a tripod at the point interested. 11. Install a tribrach on the tripod, adjust it to horizontal level and install the GNSS antenna and the antenna connector on it. 70 / 76 12. Connect the rover antenna to the rover David with the RF cable. 13. Install the COMM2-7pin-USB & 5pin cable to the COMM2 port of the rover David, and connect the other two connectors to the USB port of the Android phone with cables and to the 2W radio station, respectively. 14. Power on the David with an external battery bank. Software Configure for the 30W Base 15. Refer to 3.3.1 to communicate the Android phone with the base David. 16. In Survey Nuwa, go to: Device -> Base Station 17. Select Auto Startup+Ex.Radio+115200+Auto, press Detail 18. If Auto Start is selected for Start Way, go to Step 20. 19. If Manual Start is selected in for Start Way, input the bases position manually. 20. Press OK to go back to the Base page, press Start. Software Configure for the 2W Rover 21. Refer to 3.3.1 to communicate the Android phone with the rover David. 22. Go back to: Device -> Rover Station 71 / 76 23. Select Ext.Radio+115200+Auto, press Detail 24. Data Link is Radio and ensure the Band Rate is correct. 25. Go back to the rover page, and press Start. 6.4 Data Collection for Post Processing
!
The size of the logging:
Collect raw measurements at 1Hz (about 110KByte/min if 20 satellites are tracked, about 165KByte/min if 30 satellites are tracked) If the collection frequency increased, the data size will be increased proportionately. David provides up to 4GB internal eMMC card for data collection, before data collection, estimate whether the free space is enough for the data collection. Refer to Table 20 to delete the files on eMMC card to get more free space. During data collection, the antenna must be installed on a tripod. 72 / 76
! Rules for the file name & update time in the internal eMMC card:
1) Name: file name is the 00..00xx..xx.dat, totally 8 digits, in which xxxx is the working time (seconds/100) of the David. For example, the David has worked 500 hours 40min, (500*3600 + 40*60)/100 =
18024, the file name will be 00018024.dat. 2) Update time: if the David hasnt gotten the GNSS time, the update time of the files will be19800000 0:0 (YYYYMMDD HH:MM). If the David has gotten the GNSS time, the update time will be the UTC time. Figure 49 Outline of Static Data Collection Table 31 Detailed Steps for Static Data Collection Hardware Installation 1. Install a tripod at a point interested. 2. Install a tribrach on the tripod, adjust it to horizontal level and install the GNSS antenna and the antenna connector on it. 3. Connect the antenna to the David with the RF cable. 4. Create communication between the David and the Android phone with cables, refer to section 3.3.1. Software Configure 5. In Tersus Survey Nuwa, go to Survey->Static Survey 73 / 76 6. Ensure the necessary parameters, including file name, data frequency and cutoff angle, etc. Press Start. 7. Follow steps 1 - 6 above to collect static data at other points interested. 74 / 76 7. Terminology Definition American Standard Code for Information Interchange Compact Measurement Record Direct Current Electro Static Discharge Earth Center Earth Fixed GLObal NAvigation Satellite System Global Navigation Satellite System Global Positioning System Intermediate Frequency Inertial Measurement Unit Input/Output Light Emitting Diode Low Noise Amplifier Micro Processing Unit National Marine Electronics Association Personal Computer Pulse Per Second Radio Frequency Receiver Independent Exchange format Root Mean Squares Real-Time Kinematic Radio Technical Commission for Maritime Services Sub-Miniature-A interface Time to First Fix Transistor-Transistor Logic level Universal Asynchronous Receiver/Transmitter Universal Serial BUS Word Geodetic System 1984 Table 32 List of terminology Abbreviation ASCII CMR DC ESD ECEF GLONASS GNSS GPS IF IMU IO LED LNA MPU NMEA PC PPS RF RINEX RMS RTK RTCM SMA TTFF TTL UART USB WGS84 75 / 76 FCC Caution. This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions:
(1) This device may not cause harmful interference, and
(2) this device must accept any interference received, including interference that may cause undesired operation. Any Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment. Note: This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference in which case the user will be required to correct the interference at his own expense. The device has been evaluated to meet general RF exposure requirement. The device can be used in portable exposure condition without restriction.
frequency | equipment class | purpose | ||
---|---|---|---|---|
1 | 2018-09-10 | 2402 ~ 2480 | DSS - Part 15 Spread Spectrum Transmitter | Original Equipment |
2 | 2402 ~ 2480 | DTS - Digital Transmission System |
app s | Applicant Information | |||||
---|---|---|---|---|---|---|
1 2 | Effective |
2018-09-10
|
||||
1 2 | Applicant's complete, legal business name |
Tersus GNSS Inc.
|
||||
1 2 | FCC Registration Number (FRN) |
0026586263
|
||||
1 2 | Physical Address |
Rm 210, Building A, No. 666 Zhangheng Road
|
||||
1 2 |
Shanghai,, N/A
|
|||||
1 2 |
China
|
|||||
app s | TCB Information | |||||
1 2 | TCB Application Email Address |
b******@phonenix-testlab.de
|
||||
1 2 | TCB Scope |
A4: UNII devices & low power transmitters using spread spectrum techniques
|
||||
app s | FCC ID | |||||
1 2 | Grantee Code |
2AMDJ
|
||||
1 2 | Equipment Product Code |
BT420A
|
||||
app s | Person at the applicant's address to receive grant or for contact | |||||
1 2 | Name |
X****** T****
|
||||
1 2 | Telephone Number |
86-21********
|
||||
1 2 | Fax Number |
86-21********
|
||||
1 2 |
x******@tersus-gnss.com
|
|||||
app s | Technical Contact | |||||
n/a | ||||||
app s | Non Technical Contact | |||||
n/a | ||||||
app s | Confidentiality (long or short term) | |||||
1 2 | Does this application include a request for confidentiality for any portion(s) of the data contained in this application pursuant to 47 CFR § 0.459 of the Commission Rules?: | Yes | ||||
1 2 | Long-Term Confidentiality Does this application include a request for confidentiality for any portion(s) of the data contained in this application pursuant to 47 CFR § 0.459 of the Commission Rules?: | No | ||||
if no date is supplied, the release date will be set to 45 calendar days past the date of grant. | ||||||
app s | Cognitive Radio & Software Defined Radio, Class, etc | |||||
1 2 | Is this application for software defined/cognitive radio authorization? | No | ||||
1 2 | Equipment Class | DSS - Part 15 Spread Spectrum Transmitter | ||||
1 2 | DTS - Digital Transmission System | |||||
1 2 | Description of product as it is marketed: (NOTE: This text will appear below the equipment class on the grant) | Bluetooth transceiver(David BT) | ||||
1 2 | Related OET KnowledgeDataBase Inquiry: Is there a KDB inquiry associated with this application? | No | ||||
1 2 | Modular Equipment Type | Does not apply | ||||
1 2 | Purpose / Application is for | Original Equipment | ||||
1 2 | Composite Equipment: Is the equipment in this application a composite device subject to an additional equipment authorization? | Yes | ||||
1 2 | Related Equipment: Is the equipment in this application part of a system that operates with, or is marketed with, another device that requires an equipment authorization? | No | ||||
1 2 | Grant Comments | Output power listed is peak conducted. | ||||
1 2 | Is there an equipment authorization waiver associated with this application? | No | ||||
1 2 | If there is an equipment authorization waiver associated with this application, has the associated waiver been approved and all information uploaded? | No | ||||
app s | Test Firm Name and Contact Information | |||||
1 2 | Firm Name |
Shenzhen STS Test Services Co., Ltd.
|
||||
1 2 | Name |
B******** Y********
|
||||
1 2 | Telephone Number |
+86 7********
|
||||
1 2 |
B******@stsapp.com
|
|||||
Equipment Specifications | |||||||||||||||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Line | Rule Parts | Grant Notes | Lower Frequency | Upper Frequency | Power Output | Tolerance | Emission Designator | Microprocessor Number | |||||||||||||||||||||||||||||||||
1 | 1 | 15C | CC | 2402.00000000 | 2480.00000000 | 0.0040000 | |||||||||||||||||||||||||||||||||||
Line | Rule Parts | Grant Notes | Lower Frequency | Upper Frequency | Power Output | Tolerance | Emission Designator | Microprocessor Number | |||||||||||||||||||||||||||||||||
2 | 1 | 15C | CC | 2402.00000000 | 2480.00000000 | 0.0040000 |
some individual PII (Personally Identifiable Information) available on the public forms may be redacted, original source may include additional details
This product uses the FCC Data API but is not endorsed or certified by the FCC