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User Manual
User Manual
Version V2.0-20190314
User Manual
For BX Series GNSS Receiver
©2019 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
Page 2
Revision History
Rev
Description
Date
Owner
1.0
Issued for Review
2018/06/29
CB
2.0
In section 1.2, add OEM board of BX316 and BX316R, add
BX316D enclosure;
In section 1.2.7, remove external SD card for BX316 and
BX316R enclosure;
In chapter 2, update pictures, links, tables and commands;
In section 4, list technical specifications for all BX series
products;
In section 5.1, update rules for the file name;
In section 5.6, change RS05B radio to RS460 radio,
update commands for outputting base position.
2019/03/14
LC
User Manual for BX Series GNSS Receiver v2.0
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User Manual for BX Series GNSS Receiver v2.0
Table of Content
Revision History............................................................................................................I
Table of Content
List of Figures............................................................................................................. VI
List of Tables
Notices
1. Introduction............................................................................................................4
..........................................................................................................................
1.1 Overview of BX Series GNSS Receivers..................................................4
1.1.1 BX GNSS OEM Boards
1.1.2 BX GNSS Enclosures...........................................................................4
1.2 Related Documents and Information
1.2.1 OEM BX306 Board................................................................................5
1.2.2 OEM BX306Z Board
..........................................................................................................
..............................................................................................................
........................................................................
.........................................................
.............................................................................
IX
II
1
4
5
7
1.2.3 OEM BX316 Board................................................................................9
1.2.4 OEM BX316R Board...........................................................................11
1.2.5 OEM BX316D Board
1.2.6 BX306 Enclosure................................................................................ 14
1.2.7 BX316 Enclosure
1.2.8 BX316R Enclosure..............................................................................17
1.2.9 BX316D Enclosure..............................................................................19
1.3 BX Receivers System Overview
1.3.1 BX Series OEM Boards......................................................................22
1.3.2 BX Enclosures
.....................................................................................
..........................................................................
................................................................................
..............................................................
12
15
21
22
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User Manual for BX Series GNSS Receiver v2.0
1.3.3 Antenna
................................................................................................
1.3.4 Power Supply.......................................................................................23
1.3.5 Communication Equipment
...............................................................
1.3.6 Internal eMMC Card/External SD Card........................................... 23
1.3.7 Enable Heading...................................................................................24
2. Installation
2.1 Shipping Box
...........................................................................................................
...............................................................................................
2.2 UART to USB converter............................................................................ 26
2.3 Selecting a GNSS antenna
.......................................................................
2.4 Power Supply Requirement......................................................................29
2.5 OEM Boards Installation Overview..........................................................30
23
23
25
25
28
2.6 Tersus GNSS Center Software
................................................................
31
2.6.1 Auto Base Station List Function........................................................34
2.7 Transmitting and Receiving Corrections
.................................................
36
2.8 Heading Output...........................................................................................37
3. Firmware Update and Auth Code....................................................................39
3.1 Firmware Update Overview
......................................................................
39
3.2 Firmware Update Using Tersus GNSS Center...................................... 40
3.3 Auth Code
4. Technical Specifications
....................................................................................................
....................................................................................
45
46
4.1 BX306 Board...............................................................................................46
4.1.1 BX306 Specifications
..........................................................................
46
4.1.2 Connectors on BX306 board.............................................................49
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4.1.3 Reference Schematic of the Interface Board
..................................
50
4.2 BX306Z Board............................................................................................ 52
4.2.1 BX306Z Specifications
.......................................................................
52
4.2.2 Connectors on BX306Z board.......................................................... 55
4.3 BX316 Board...............................................................................................59
4.3.1 BX316 Specifications
..........................................................................
59
4.3.2 40pin external cable............................................................................62
4.4 BX316R Board
............................................................................................
64
4.4.1 BX316R Specifications.......................................................................64
4.4.2 40pin external cable
............................................................................
65
4.5 BX316D Board............................................................................................ 65
4.5.1 BX316D Specifications.......................................................................65
4.5.2 Connectors on BX316D board
..........................................................
68
4.6 BX306 Enclosure........................................................................................70
4.6.1 BX306 Enclosure Specifications
.......................................................
70
4.6.2 20pin external cable............................................................................71
4.7 BX316 Enclosure........................................................................................73
4.7.1 BX316 Enclosure Specifications
.......................................................
73
4.7.2 40pin external cable............................................................................75
4.8 BX316R Enclosure
.....................................................................................
76
4.8.1 BX316R Enclosure Specifications....................................................76
4.8.2 40pin external cable
............................................................................
78
4.9 BX316D Enclosure.....................................................................................78
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4.9.1 BX316D Enclosure Specifications
....................................................
78
4.9.2 20pin external cable............................................................................80
5. Typical Application............................................................................................. 81
5.1 Data Collection on Internal eMMC
...........................................................
81
5.2 Download Files from Internal eMMC.......................................................84
5.3 Connect BX306 to an External Bluetooth...............................................87
5.3.1 Communicate with NTRIP Client App
..............................................
88
5.4 Save Data to an External Data Logger................................................... 91
5.5 Communicate with STRSVR Tool
............................................................
92
5.6 Create RTK using BX306 and a Radio................................................... 95
5.6.1 Radio to Transmit RTK Corrections................................................. 96
5.6.2 Radio to Receive RTK Corrections
..................................................
5.7 Connect BX306 to Pixhawk...................................................................... 97
5.8 Uninstall the Cable from BX306 Enclosure
6. Terminology
......................................................................................................
..........................................
97
101
102
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List of Figures
Figure 1.1 Overview of BX306 Board...................................................................... 5
Figure 1.2 The other side of BX306 Board..............................................................6
Figure 1.3 Overview of BX306Z Board
Figure 1.4 The other side of BX306Z Board
Figure 1.5 Overview of BX316 Board...................................................................... 9
Figure 1.6 The other side of BX316 Board........................................................... 10
Figure 1.7 Overview of BX316R Board
Figure 1.8 The other side of BX316R Board
Figure 1.9 Overview of BX316D Board................................................................. 12
Figure 1.10 The other side of BX316D Board...................................................... 13
Figure 1.11 Overview of BX306 Enclosure
Figure 1.12 BX306 Enclosure Panel
Figure 1.13 Overview of BX316 Enclosure...........................................................15
Figure 1.14 BX316 Enclosure Panel......................................................................16
....................................................................
...........................................................
..................................................................
........................................................
...........................................................
......................................................................
11
12
14
15
7
8
Figure 1.15 Overview of BX316R Enclosure
Figure 1.16 Overview of BX316D Enclosure
Figure 1.17 BX316D Enclosure Panel...................................................................20
Figure 1.18 System Overview of BX Boards........................................................ 21
Figure 2.1 Carrying case
Figure 2.2 Major Parts in the BX306 GNSS Kit Package
Figure 2.3 Major Parts in the BX306 GNSS UAV Kit Package..........................26
Figure 2.4 UART to USB converter........................................................................ 27
Figure 2.5 Device Manager
Figure 2.6 AX3702 GNSS antenna
Figure 2.7 AX3703 mini GNSS antenna................................................................28
..........................................................................................
.....................................................................................
........................................................................
........................................................
........................................................
...................................
18
19
25
26
27
28
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Figure 2.8 AX3705 Helix Antenna
Figure 2.9 Config Page of Tersus GNSS Center
..........................................................................
.................................................
28
32
Figure 2.10 BX306 Enclosure Connected to a Laptop....................................... 33
Figure 2.11 Main Windows of Tersus GNSS Center........................................... 33
Figure 2.12 Auto Base Station List interface
Figure 2.13 Fixed position for base station
........................................................
...........................................................
35
35
Figure 2.14 Base/Rover Configure.........................................................................36
Figure 3.1 Main interface of Tersus GNSS Center.............................................. 40
Figure 3.2 Stop button on Tersus GNSS Center
Figure 3.3 Find UpdateFirmware in Tools bar
..................................................
......................................................
41
41
Figure 3.4 Select file to update............................................................................... 42
Figure 3.5 Update in progress................................................................................ 42
Figure 3.6 Firmware update successful
Figure 3.7 Advance setting for firmware update
................................................................
..................................................
43
44
Figure 3.8 Advance Update Setting....................................................................... 44
Figure 4.1 Connector J3 on BX306 board............................................................ 49
Figure 4.2 3.3V Reference Schematic
Figure 4.3 5V Reference Schematic
...................................................................
......................................................................
51
51
Figure 4.4 Reference Schematic for a Serial Port............................................... 51
Figure 4.5 Reference Schematic for USB.............................................................52
Figure 4.6 Connectors J20 and J21 of BX306Z
Figure 4.7 Outline of the 40pin external cable
...................................................
......................................................
55
62
Figure 4.8 Connector J3 of BX316D......................................................................68
Figure 4.9 Outline of the 20pin external cable......................................................72
Figure 5.1 Cable is assembled
Figure 5.2 Uninstall the Cable
.............................................................................
..............................................................................
101
101
Figure 5.3 Cable between Pixhawk and BX306...................................................97
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Figure 5.4 Outline of BX306 connected to Pixhawk
Figure 5.5 Pixhawk Get Position from BX306
......................................................
............................................
97
98
Figure 5.6 RTK corrections from the base BX306 are received......................100
Figure 5.7 GPS status changes to rtk Fixed.......................................................100
Figure 5.8 Transfer Cable
Figure 5.9 Outline of BX306 Connected to RS460 Radio
........................................................................................
..................................
95
96
Figure 5.10 Data logger DL207.............................................................................. 91
Figure 5.11 Outline of BX306 Connected to DL207............................................ 91
Figure 5.12 BT120 and the Cable
Figure 5.13 Outline of BX306 Connected to BT120
..........................................................................
............................................
87
87
Figure 5.14 Click Settings in NTRIP Client app................................................... 88
Figure 5.15 Setting page of the NTRIP Client app.............................................. 89
Figure 5.16 Input Bluetooth name in the receiver settings
Figure 5.17 Reported location of the receiver
......................................................
.................................
89
90
Figure 5.18 Configure serial port COM2............................................................... 93
Figure 5.19 NTRIP Client configuration.................................................................93
Figure 5.20 Draft position of the receiver
Figure 5.21 Input and Output data in progress
..............................................................
....................................................
94
94
Figure 5.22 Download Files from eMMC Card with a Serial Port......................84
Figure 5.23 Download Files from eMMC Card with an USB Port..................... 84
Figure 5.24 5pin to USB Type A male cable
Figure 5.25 File download using Tersus Download
........................................................
.............................................
85
85
Figure 5.26 Select serial port for Download Port................................................. 86
Figure 5.27 Select download speed.......................................................................86
Figure 5.28 File downloading in progress
.............................................................
86
VIII
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List of Tables
Table 0.1 Document / Software used in this User Manual....................................3
Table 1.1 Features of BX306 Board
Table 1.2 LED Definition of BX306 board
Table 1.3 Features of BX306Z Board...................................................................... 7
Table 1.4 LED Definition of BX306Z Board............................................................ 8
Table 1.5 Features of BX316 Board
Table 1.6 LED Definition of BX316 Board
Table 1.7 Features of BX316R Board....................................................................11
Table 1.8 Features of BX316D Board.................................................................... 12
Table 1.9 LED Definition of BX316D Board
Table 1.10 Features of BX306 Enclosure
Table 1.11 LED Definition of BX306 Enclosure................................................... 15
Table 1.12 Features of BX316 Enclosure..............................................................16
.........................................................................
................................................................
.........................................................................
.............................................................
..........................................................
..............................................................
10
13
14
5
6
9
Table 1.13 LEDs on BX316 Enclosure Panel
Table 1.14 Features of BX316R Enclosure
Table 1.15 Features of BX316D Enclosure...........................................................19
Table 1.16 LED Definition of BX316D Enclosure................................................ 20
Table 2.1 Input Power Requirements
Table 2.2 Definition of the lights on Tersus GNSS Center
Table 4.1 BX306 Board Specifications.................................................................. 46
Table 4.2 Interface Signals Definition.................................................................... 49
Table 4.3 BX306Z Board Specifications
Table 4.4 2X12 Header Signals Definition
Table 4.5 2x3 Header Signals Definition............................................................... 58
.....................................................................
.......................................................
...........................................................
..................................
................................................................
............................................................
17
18
30
32
52
56
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Table 4.6 BX316 Board Performance
Table 4.7 Pin Definition of the 40pin external cable
....................................................................
............................................
59
63
Table 4.8 BX306D Board Specifications................................................................65
Table 4.9 Interface Signals Definition.................................................................... 68
Table 4.10 BX306 Enclosure Specifications
Table 4.11 Pin Definition of the 20pin external cable
.........................................................
..........................................
70
72
Table 4.12 BX316 Enclosure Specifications......................................................... 73
Table 4.14 BX316R Enclosure Specifications...................................................... 76
Table 4.14 BX316D Enclosure Specifications
......................................................
78
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User Manual for BX Series GNSS Receiver v2.0
Notices
FCC Notices
The BX306 enclosure has been tested and found to comply with the radiated
and conducted emission limits for a Class A digital device. The Class A limits
are designed to provide reasonable protection against harmful interference in
a residential installation.
The BX316 enclosure has been tested and found to comply with the radiated
and conducted emission limits for a Class A digital device. The Class A limits
are designed to provide reasonable protection against harmful interference in
a residential installation.
CE Marking
Tersus GNSS Inc. declares that BX306 enclosure and BX316 enclosure are in
compliance with the essential requirements (radio performance,
electromagnetic compatibility and electrical safety) and other relevant
provisions of Directive 1999/5/EC, EMC Directive 2004/108/EC, and the RoHS
Recast Directive 2011/65/EU. Therefore the equipment is labeled with the
following CE-marking.
The Declaration of Conformity may be obtained from Tersus GNSS Inc.
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Changes or modifications to this equipment not expressly approved
by Tersus could void the user’s authority to operate this equipment or
even has risk to damage the receivers.
!
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.
The following notices apply to all Tersus BX series receivers.
Conventions
The following conventions are used in this manual:
Tersus is providing BX series GNSS receivers with OEM version as well as
with enclosure in a metal case. When a board is mentioned, it’s OEM version
of the receiver, specifically. When enclosure is mentioned, it’s receiver version
in a metal case, specifically.
In this manual, all the commands to a receiver are in capital letters, which is
just for easy identification, the commands are not case-sensitive.
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Name
Description
Link
Log & Command
document
Document providing all the loggings
output from BX series receivers and
all the commands to the receivers
https://www.tersus-gnss.com/document
under GNSS OEM Board / User Manual
Tersus Tool Suite
Tersus Tools including
TersusDownload, TersusGeoPix,
TersusGNSSCenter, TersusUpdate,
TersusRinexConverter
https://www.tersus-gnss.com/software
RTKLIB
A free & popularly used Post
processing tool
http://www.rtklib.com/
Mission Planner
A popular Ground Station software
http://firmware.ardupilot.org/Tools/Mission
Planner/
Table 0.1 Document / Software used in this User Manual
Support
If there is any problem and the information needed cannot be found in the
product documentation, request technical support using the Tersus website at
www.tersus-gnss.com, or mail to support@tersus-gnss.com
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User Manual for BX Series GNSS Receiver v2.0
1. Introduction
1.1 Overview of BX Series GNSS Receivers
1.1.1 BX GNSS OEM Boards
1.1.2 BX GNSS Enclosures
BX series GNSS receivers are cost-efficient GNSS RTK board for cm-level
positioning, which can be used for real-time RTK positioning as well as raw
data collection for post-processing application. BX receivers support existed
and planned GPS, BeiDou and GLONASS signals. Both OEM boards and the
enclosures are designed for the flexibility of integration and configuration.
BX series receivers are delivered with OEM boards as well as in enclosures.
For further information about BX receivers, refer to
https://www.tersus-gnss.com/ for more details.
OEM BX306 board – refer to section 1.2.1 for details;
OEM BX306Z board – refer to section 1.2.2 for details;
OEM BX316 board – refer to section 1.2.3 for details;
OEM BX316R board – refer to section 1.2.4 for details;
OEM BX316D board – refer to section 1.2.5 for details;
BX306 enclosure – refer to section 1.2.6 for details;
BX316 enclosure – refer to section 1.2.7 for details;
BX316R enclosure – refer to section 1.2.8 for details;
BX316D enclosure – refer to section 1.2.9 for details.
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1.2 Related Documents and Information
1.2.1 OEM BX306 Board
Supports three constellations, six
frequencies: GPS L1/L2, GLONASS
L1/L2, BEIDOU B1/B2
Supports NMEA-0183 and Tersus Binary
format
Log & Command compatible with Novatel
Protocol
Pin to Pin compatible with Novatel OEM615
Correction: RTCM 2.x/3.x/CMR/CMR+
Up to 20Hz RTK solution and raw data output
1
Up to 4GB internal eMMC for data
collection.
Compact design
Figure 1.1 Overview of BX306 Board
Table 1.1 Features of BX306 Board
Note 1: 20Hz solution is related to firmware release, contact Tersus technical
support before this solution is used.
The technical specification of BX306 board is provided in chapter 4. Two LEDs
are installed on the BX306 board, whose definition is given in Table 1.2:
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User Manual for BX Series GNSS Receiver v2.0
LED
Colour
Description
LED1 (left)
ORANGE
Blink 1Hz: if log is output at 1Hz or less.
Blink the same rate as the log if log output rate >1Hz.
LED2 (right)
GREEN
ON: RTK fixed.
Blink: RTK float solution.
OFF: Other position types.
After power on, both LED1 and LED2 are ON for 3 – 5 seconds, then
both are OFF for 2 seconds. Afterwards, LED1 will blink at 1Hz.
The BX306 board is NOT booting up successfully if the LEDs are not
acting as the above.
Figure 1.2 The other side of BX306 Board
Table 1.2 LED Definition of BX306 board
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User Manual for BX Series GNSS Receiver v2.0
1.2.2 OEM BX306Z Board
Supports three constellations, six
frequencies: GPS L1/L2, GLONASS
L1/L2, BEIDOU B1/B2
Supports NMEA-0183 and Tersus Binary
format
Log & Command compatible with Novatel
Protocol
Pin to Pin compatible with Trimble BD970
Correction: RTCM 2.x/3.x/CMR/CMR+
Up to 20Hz RTK solution and raw data output
1
Up to 4GB internal eMMC for data
collection.
Figure 1.3 Overview of BX306Z Board
Table 1.3 Features of BX306Z Board
Note 1: 20Hz solution is related to firmware release, contact Tersus technical
support before this solution is used.
The technical specification of BX306Z board is provided in chapter 4. Three
LEDs are on the BX306Z board, the definition is given in Table 1.4.
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Figure 1.4 The other side of BX306Z Board
LED
Colour
Description
LED1 (left)
ORANGE
ON: RTK corrections are received.
OFF: RTK corrections are not received.
LED2 (middle)
ORANGE
ON: after power on.
LED3 (right)
GREEN
Blink: RTK float.
ON: RTK fixed.
OFF: other position types
After power on, all the three LEDs are ON for 3 – 5 seconds, then all
are OFF. After 2 seconds, LED2 will be ON.
The BX306Z board is NOT booting up successfully if the LEDs are
not acting as the above.
Table 1.4 LED Definition of BX306Z Board
User Manual for BX Series GNSS Receiver v2.0
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1.2.3 OEM BX316 Board
Supports three constellations, six
frequencies GPS L1/L2, GLONASS L1/L2,
BEIDOU B1/B2
Supports NMEA-0183 and Tersus Binary
format
Log & Command compatible with Novatel
Protocol
Up to 4GB internal eMMC for data collection.
Correction: RTCM 2.x/3.x/CMR/CMR+
Up to 20Hz RTK solution and raw data output
1
Support heading
Compact design
Figure 1.5 Overview of BX316 Board
Table 1.5 Features of BX316 Board
Note 1: 20Hz solution is related to firmware release, contact Tersus technical
support before this solution is used.
The technical specification of BX316 board is provided in chapter 4. Four LEDs
are on the BX316 board, the definition is given in the table below.
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Table 1.6 LED Definition of BX316 Board
LED
Colour
Description
PWR & Log
(bottom 1)
GREEN
ON: if there is no data collection to eMMC card.
Blink: data saved to eMMC card.
GPS
(bottom 2)
WHITE
Default: 1Hz blink
If data output at higher rate, the blink rate will increase
accordingly.
Base
(top 2)
GREEN
OFF: no RTK corrections are received.
ON: RTK corrections can be received.
RTK (top 1)
BLUE
OFF: RTK not fixed.
ON: RTK fixed.
After power on, All the four LEDs are ON for 3 – 5 seconds, then all
are OFF for 2 seconds, PWR&Log LED will be ON or blink. GPS
LED will blink.
The BX316 enclosure is NOT booting up successfully if the LEDs are
not acting as the above.
User Manual for BX Series GNSS Receiver v2.0
The other side of BX316 board is shown as below.
Figure 1.6 The other side of BX316 Board
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User Manual for BX Series GNSS Receiver v2.0
1.2.4 OEM BX316R Board
Supports three constellations, six
frequencies GPS L1/L2, GLONASS L1/L2,
BEIDOU B1/B2
Supports NMEA-0183 and Tersus Binary
format
Log & Command compatible with Novatel
Protocol
Up to 4GB internal eMMC for data collection.
Correction: RTCM 2.x/3.x/CMR/CMR+
Up to 20Hz RTK solution and raw data output
1
Compact design
Figure 1.7 Overview of BX316R Board
Table 1.7 Features of BX316R Board
Note 1: 20Hz solution is related to firmware release, contact Tersus technical
support before this solution is used.
The technical specification of BX316R board is provided in chapter 4. Four
LEDs are on the BX316R board, the definition is given in Table 1.6 in the
section above.
The other side of BX316R board is shown below.
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User Manual for BX Series GNSS Receiver v2.0
1.2.5 OEM BX316D Board
Supports three constellations, six
frequencies GPS L1/L2, GLONASS L1/L2,
BEIDOU B1/B2
Supports NMEA-0183 and Tersus Binary
format
Log & Command compatible with Novatel
Protocol
Pin to Pin compatible with Novatel 617D
Correction: RTCM 2.x/3.x/CMR/CMR+
Up to 20Hz RTK solution and raw data output
1
Supporting heading
Compact design
Up to 4GB internal eMMC for data
collection.
Figure 1.8 The other side of BX316R Board
Table 1.8 Features of BX316D Board
Figure 1.9 Overview of BX316D Board
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LED
Colour
Description
LED1 (left)
ORANGE
Blink 1Hz: if log is output at 1Hz or less.
Blink the same rate as the log if log output rate >1Hz.
LED2 (right)
GREEN
ON: RTK fixed.
OFF: RTK not fixed.
After power on, both LED1 and LED2 are ON for 3 – 5 seconds, then
both are OFF for 2 seconds. Afterwards, LED1 will blink at 1Hz.
The BX316D board is NOT booting up successfully if the LEDs are
not acting as the above.
Note 1: 20Hz solution is related to firmware release, contact Tersus technical
support before this solution is used.
The technical specification of BX316D board is provided in chapter 4. Two
LEDs are installed on the BX316D board, whose definition is given in Table
1.9:
Figure 1.10 The other side of BX316D Board
Table 1.9 LED Definition of BX316D Board
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1.2.6 BX306 Enclosure
Feature
BX306 Enclosure
OEM board
BX306 board
Serial ports
2 LVTTL serial port
1
Antenna interface
Single SMA
USB
USB2.0
Input power
+5~+12VDC
Power interface
USB type A
GPS+BEIDOU+GLONASS positioning
Yes
PPS
Yes
Event
Yes
Figure 1.11 Overview of BX306 Enclosure
Table 1.10 Features of BX306 Enclosure
Note 1: The specific 20-pin cable has a COM3 connector, but its function is
related to the firmware version, please check with Tersus technical support.
The technical specification of BX306 enclosure is provided in chapter 4. Two
LEDs are given on the BX306 enclosure panel, the definition is in Table 1.11.
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Figure 1.12 BX306 Enclosure Panel
LED
Colour
Description
LED1
RED
ON: RTK fixed.
OFF: RTK not fixed.
LED2
RED
ON: after power on.
After power on, both LED1 and LED2 are ON for 3 – 5 seconds, then
LED1 will be OFF, while LED2 keeps ON.
The BX306 enclosure is NOT booting up successfully if the LEDs are
not acting as the above.
1.2.7 BX316 Enclosure
Table 1.11 LED Definition of BX306 Enclosure
User Manual for BX Series GNSS Receiver v2.0
Figure 1.13 Overview of BX316 Enclosure
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Table 1.12 Features of BX316 Enclosure
Feature
BX316 Enclosure
OEM board
BX316 board
Serial ports
2 LVTTL serial port
1
Antenna interface
Double SMA
Input power
+5~+12VDC
Power interface
USB type A
USB
USB2.0
GPS+GLONASS+BEIDOU in
position and heading
Depends on the antenna mode, refer to command
ANTENNAMODE in the Log & Command document for
detail.
External SD card
No
Heading
Yes
PPS
Yes
Event
Yes
User Manual for BX Series GNSS Receiver v2.0
Note 1: The specific 40-pin cable has a COM3 and Ethernet connectors,
however their function is related to the firmware version, please check with
Tersus technical support.
Refer to section 2.8 for detail about how to output heading. The technical
specification of BX316 enclosure is provided in chapter 4. Four LEDs are
provided on the BX316 enclosure panel, refer to Table 1.13 for definition.
Figure 1.14 BX316 Enclosure Panel
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Table 1.13 LEDs on BX316 Enclosure Panel
LED
Colour
Description
PWR &
Log
GREEN
ON: if there is no data collection to eMMC card.
Blink: data saved to eMMC card.
GPS
WHITE
Default: 1Hz blink
If data output at higher rate, the blink rate will increase accordingly.
Base
GREEN
OFF: no RTK corrections are received.
ON: RTK corrections can be received.
RTK
BLUE
OFF: RTK not fixed.
ON: RTK fixed.
After power on, All the four LEDs are ON for 3 – 5 seconds, then all
are OFF for 2 seconds, PWR&Log LED will be ON or blink. GPS
LED will blink.
The BX316 enclosure is NOT booting up successfully if the LEDs are
not acting as the above.
1.2.8 BX316R Enclosure
!
BX316R can support RTK positioning and heading after an auth code
is input. Contact Tersus sales for more details.
User Manual for BX Series GNSS Receiver v2.0
BX316R enclosure is designed specifically for post processing applications,
such as mobile mapping or monitoring system. It has the same hardware as
that of BX316, however it cannot support RTK positioning or heading.
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Figure 1.15 Overview of BX316R Enclosure
Feature
BX316R Enclosure
OEM board
BX316R board
Serial ports
2 LVTTL serial port
1
Antenna interface
Two SMA connectors
2
Input power
+5~+12VDC
Power interface
USB type A
USB
USB2.0
GPS+GLONASS+BEIDOU in position
Yes
External SD card
No
Heading
No
PPS
Yes
Event
Yes
Table 1.14 Features of BX316R Enclosure
User Manual for BX Series GNSS Receiver v2.0
Note 1: The specific 40-pin cable has a COM3 connector, but its function is
related to the firmware version.
Note 2: Only P-ANT interface can work.
The technical specification of BX316R enclosure is provided in chapter 4.
BX316R enclosure has the same LEDs on panel as BX316 enclosure, and has
the same the booting up mode as BX316 enclosure. Refer to section 1.2.7 for
the LEDs definition of BX316R.
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1.2.9 BX316D Enclosure
Feature
BX316D Enclosure
OEM board
BX316D board
Serial ports
2 LVTTL serial port
1
Antenna interface
Double SMA
Input power
+5~+28VDC
Power interface
USB type A
USB
USB2.0
GPS+GLONASS+BEIDOU in
position and heading
Depends on the antenna mode, refer to command
ANTENNAMODE in the Log & Command document for
detail.
External SD card
No
Heading
Yes
PPS
Yes
Event
Yes
Figure 1.16 Overview of BX316D Enclosure
Table 1.15 Features of BX316D Enclosure
Note 1: The specific 20-pin cable has a COM3 connector, however its function
is related to the firmware version, please check with Tersus technical support.
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LED
Colour
Description
PV
RED
ON: RTK fixed.
Blink: RTK floating
OFF: RTK in other position types
PWR
RED
ON: after power on.
After power on, both PV and PWR are ON for 3 – 5 seconds, then
PV will be OFF, while PWR keeps ON.
The BX316D enclosure is NOT booting up successfully if the LEDs
are not acting as the above.
The technical specification of BX316D enclosure is provided in chapter 4. Two
LEDs are given on the BX306 enclosure panel, the definition is in the table
below.
Figure 1.17 BX316D Enclosure Panel
Table 1.16 LED Definition of BX316D Enclosure
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1.3 BX Receivers System Overview
Interface board, or enclosure and cables
Power supply
Data communications equipment
GNSS antenna with Low Noise Amplifier (LNA)
To make OEM BX series boards work, the following parts are necessary:
The BX series receivers are illustrated in Figure 1.18
Figure 1.18 System Overview of BX Boards
Note 1: Only BX316 and BX316D can support the secondary antenna.
2: COM3 is related to firmware version, please contact Tersus technical
support before it is used.
3: Currently Ethernet port is not supported.
4: Currently only one event input is supported.
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User Manual for BX Series GNSS Receiver v2.0
1.3.1 BX Series OEM Boards
1.3.2 BX Enclosures
BX series OEM boards consist of a Radio Frequency (RF) section and a digital
section.
Radio Frequency (RF) Section
The receiver obtains filtered, amplified GNSS signals from the antenna. The
RF section down converts the incoming RF signals to Intermediate Frequency
(IF) signals which are processed by the digital section. The RF section also
supplies power to the active antenna LNA through the coaxial cable. The RF
section has been designed to reject common sources of interference.
Digital Section
The core of the digital section is the base band, which is realized with a FPGA
chip. The digital section digitizes and processes the base band signals to
obtain a PVT (Position, Velocity and Time) solution. If RTK corrections from
the base are received, the receiver will output cm-level position. The digital
section also processes the system I/O, shown in Figure 1.18.
An enclosure is necessary to protect the OEM BX series boards from
environmental extremes and high levels RF interference, and it brings
convenience for the customers to use the receivers.
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1.3.3 Antenna
1.3.4 Power Supply
1.3.5 Communication Equipment
1.3.6 Internal eMMC Card/External SD Card
!
All the BX receivers support up to 4GB internal eMMC card by
FW0020 or later firmware.
The antenna converts electromagnetic signals transmitted by GNSS satellites
into electrical signals that can be used by the receiver.
An active GNSS antenna is required for optimal receiver performance. Tersus
is providing active GNSS antennas with precise phase centers and robust
enclosures (refer to https://www.tersus-gnss.com/product/accessories for
more about antennas.
A power supply capable of delivering the minimum receiver operating voltage
and power is required. Refer to section 2.4 for details.
A computer, a tablet or other data communications device are necessary to
communicate with the receiver, and to receive and store the data that the
receiver outputs.
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!
The external SD card must meet:
Size ≤ 16GB
File system: FAT32
The SD card should be installed into the external data logger before it
is used, refer to section 5.4 for details.
1.3.7 Enable Heading
!
Only OEM BX316D board/enclosure and BX316 board/enclosure can
support heading output.
!
When in single antenna mode, the connector for the secondary
antenna connector can be left floating.
The data can be saved on the internal eMMC or external SD card manually or
automatically, which is determined by the command LOGFILE.
The default configuration of BX316D and BX316 is in single antenna mode, in
which heading output is not supported. Heading output is supported only when
they are in dual antenna mode. Command ANTENNAMODE must be input to
select the antenna mode, refer to chapter 2.8 Heading Output for details.
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2. Installation
!
The installation takes BX306 enclosure as the example, BX series
OEM boards can be integrated to the customer’s system in various
packages, and all actions can refer to the installation guide in this
chapter.
2.1 Shipping Box
This chapter describes how to set up a BX receiver to make it work. In order to
perform RTK positioning, BX receiver needs the GNSS satellites signals input
from the antenna and RTK corrections input from a serial port.
Generally, the BX series receiver kits are shipped in a plastic carrying box
which is shown below. However, the BX series OEM boards are not shipped in
this box. The following receivers / accessories can be packed in the standard
carrying case.
Figure 2.1 Carrying case
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2.2 UART to USB converter
Figure 2.2 Major Parts in the BX306 GNSS Kit Package
Figure 2.3 Major Parts in the BX306 GNSS UAV Kit Package
The BX enclosure receivers communicate with other devices via a serial port,
which could be connected to a UART to USB converter, refer to Figure 2.4.
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Figure 2.4 UART to USB converter
The driver for UART to USB converter can be downloaded from Tersus website:
https://tersus-gnss.com/software/gnss-kits or contact Tersus Technical support
by email support@tersus-gnss.com for software support.
After the driver is installed on your computer successfully, it can be found in
device manager, refer to Figure 2.5. BX306 is connected to the UART to USB
converter and any serial software tool can communicate with the BX306.
Figure 2.5 Device Manager
Tersus GNSS Center, a graphic serial software which is integrated into Tersus
Tool Suite, is recommended to communicate with the receiver. It can be freely
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2.3 Selecting a GNSS antenna
downloaded from https://tersus-gnss.com/software . Figure 2.11 shows the
main windows of Tersus GNSS Center, refer to section 2.6 for more details.
The antennas provided by Tersus can be found on Tersus website
https://tersus-gnss.com/product/accessories. It is highly recommended the
antennas from Tersus are used to work with BX series receivers.
Figure 2.6 AX3702 GNSS antenna
Figure 2.7 AX3703 mini GNSS antenna
Figure 2.8 AX3705 Helix Antenna
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Contact Tersus support if problem occurs when an antenna from other
vendors is used.
2.4 Power Supply Requirement
Power to the BX series OEM boards must be applied for >150ms
before any of the external interfaces are powered on by the
integrator's board.
Hold the RESETIN pin low during power up and for >150ms after
power is applied.
If the voltage supplied is below the minimum specification, the
receiver suspends operation. If the voltage supplied is above the
maximum specification, the receiver may be permanently damaged,
voiding the warranty.
Generally, AX3702 is widely used in survey application and is recommended
for all other applications. AX3703 is recommended for UAV application.
AX3705 is a part of solution for UAV PPK.
When installing the antenna:
• Choose an antenna location with a good view of the sky so that there is no
obstruction from horizon to horizon.
• Mount the antenna on a secure, stable structure capable of safe operation
in the specific environment.
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BX series receivers
Input Power Requirement
OEM BX306 board
+3.3 VDC +5%/-3% with less than 100 mV ripple
OEM BX306Z board
+3.3 VDC +5%/-3% with less than 100 mV ripple
OEM BX316 board
+5~+12VDC
OEM BX316R board
+5~+12VDC
OEM BX316D board
+3.3 VDC +5%/-3% with less than 100 mV ripple
BX306 enclosure
+5~+12VDC
BX316 enclosure
+5~+12VDC
BX316R enclosure
+5~+12VDC
BX316D enclosure
+5~+28VDC
2.5 OEM Boards Installation Overview
a) Install the BX board in an enclosure or on a mother board.
The LEDs on the OEM boards/enclosures can tell whether the
receiver is booting up successfully or not, refer to the detailed
information from section 1.2.1 to 1.2.9.
None of the BX receivers are supporting reversed polarity protection.
The input power requirement for the BX series receivers are given in Table 2.1
Table 2.1 Input Power Requirements
When the appropriate equipment is selected, complete the following steps to
set up and begin using the BX series receivers.
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b) Mount the GNSS antenna to a secure, stable structure.
c) Connect the GNSS antenna to the receiver with a RF cable.
d) Apply power to the receiver, as described in section 2.4.
e) Connect the receiver to a computer or other data communications
equipment.
When OEM BXs series boards are handled, follow the guides below to
avoid damage from ESD.
Always wear a properly grounded anti-static wrist strap when
handling BX series boards.
Always hold the board by the corners or the RF shield: avoid direct
contact with any of the components.
Never let the board come in contact with clothing. The ground strap
cannot dissipate static charges from fabrics.
Failure to follow accepted ESD handling practices could cause
damage to the board permanently.
The warranty may be void if equipment is damaged by ESD.
2.6 Tersus GNSS Center Software
User Manual for BX Series GNSS Receiver v2.0
BX receivers have serial ports, hence lots of serial tools can be used to
communicate with the receivers. Terus GNSS Center is a
windows-platform-based serial tool, which is recommended to communicate
with the BX receivers. Tersus GNSS Center can be downloaded from Tersus
website https://tersus-gnss.com/software .
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Lights
Description
COMM
GREEN: the communication with the receiver is established.
RED: the communication with the receiver is not established.
GPS
GREEN: valid GPGGA is received.
RED: No valid GPGGA is received.
Base
GREEN: valid corrections are received.
RED: No valid corrections are received.
RTK
SOLID GREEN: RTK solution is got.
BLINK GREEN: float solution is got.
RED: other solutions are got.
Wifi
Reserved.
Run Tersus GNSS Center, the following config page is shown, input the port
and band rate (default is 115200).
Figure 2.9 Config Page of Tersus GNSS Center
The following table gives definition for the five lights at the bottom of Tersus
GNSS Center interface.
Table 2.2 Definition of the lights on Tersus GNSS Center
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Figure 2.10 BX306 Enclosure Connected to a Laptop
Figure 2.10 shows a BX306 enclosure is connected to a laptop with a 20-pin
external cable and a UART to USB converter.
Commands can be input in the text console window, an OK response is output
after a command is input, or the command is not input successfully.
Figure 2.11 Main Windows of Tersus GNSS Center
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!
To active the skyplot, signal strength, trajectory and other windows,
the antenna signals must be received and the following three loggings
must be input to the receiver:
LOG GPGGA ONTIME 1 // output position and time
LOG GPGSV ONTIME 1 // output SVs in view, elevation and SNR
(Signal Noise Ratio)
LOG RNAGEB ONTIME 1 // output PSR (Pseudorange) and ADR
(Accumulated Doppler Range.)
2.6.1 Auto Base Station List Function
1) Create communication between the BX receiver and Tersus GNSS Center
2) Under the Menu, click [Tool] -> [Auto Base Station List], the following
If a base is setup with command POSAVE, according to its original definition,
after a power cycle, the fixed position may be different even if the receiver is
installed at the same point. More details about command POSAVE refer to the
Log & Command document. For the users who need the base to keep the
same fixed position after a power cycle, auto base station list function is
introduced.
The procedure is introduced as below:
software, refer to section 2.6.
interface is displayed.
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3) Fill the valid position range, check PosAve On, and click [Modify]. It is
4) After the specific time (in the example, 0.01 hour is 36 seconds), the base
5) Click [Refresh], the fixed position is displayed as below.
6) After a power cycle, if the base is moved less than 20m away from the last
Figure 2.12 Auto Base Station List interface
recommended that valid position range is >20m.
is fixed with the 36 seconds averaging position.
Figure 2.13 Fixed position for base station
position, it would fix with the same position. In the above example, latitude
keeps 31.19042830, longitude keeps 121.59319162 and ellipsoid height
keeps 37.4168.
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2.7 Transmitting and Receiving Corrections
Rover
Base
Figure 2.14 Base/Rover Configure
Example of RTK configuration (base mode):
COM COM2 115200 //set the baud rate, optional
INTERFACEMODE COM2 AUTO AUTO ON //set the interfacemode, optional
FIX POSITION LAT LON HGT //fix the position of the base, for
example: FIX POSITION 31.000302123 114.289244543 26.130
refer to Log & Command Reference document for details.
LOG COM2 RTCM1074 ONTIME 1 //output GPS RTK raw measurements
LOG COM2 RTCM1084 ONTIME 1 // output GLONASS raw measurements
LOG COM2 RTCM1124 ONTIME 1 // output BeiDou RTK raw measurements
LOG COM2 RTCM1005 ONTIME 10 // output the base’s position
LOG COM2 RTCM1230 ONTIME 5 //output GLONASS bias information
SAVECONFIG //save the configuration above
Example of RTK configuration (rover mode):
COM COM2 115200 //set the baud rate, optional
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!
The antenna of the base must be static and its position must be input,
several ways can be used to input the position of the base:
If the base's position is known, input it directly with command FIX.
If the base's position is unknown, and the accuracy of the base
can be meter-level, then it is recommended to use command
POSAVE to setup the base, refer to the Log & Command
document for more about this command. Please note the base’s
position will be different after a power cycle even if the antenna is
installed at the same point if POSAVE command is input.
If you require a cm level accuracy of base and rover, then:
a. Configure the base receiver as a rover, receive RTK corrections
from a CORS nearby, this receiver can get cm-level accuracy
position.
b. Collect raw measurements for half an hour, process it with post
processing software or send the data to an online processing
web, e.g. OPUS, to get an accurate position.
2.8 Heading Output
!
Only BX316D board / enclosure and BX316 board / enclosure can
support heading output.
INTERFACEMODE COM2 AUTO AUTO ON //set the interfacemode, optional
LOG GPGGA ONTIME 1 //output GPGGA to check position type
SAVECONFIG //save the configuration above
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1) Connect two GNSS antennas to the primary and secondary connectors,
2) Input one of the two commands below to select dual antenna mode.
3) LOG HEADING ONTIME 1 // heading output
4) SAVECONFIG // save the configuration above.
5) Power cycle the receiver.
The command ANTENNAMODE is not effective before a power
cycle is completed.
!
In single antenna mode, the raw measurements in RANGE log are
from the primary antenna only.
In dual antenna mode, the raw measurements from both the primary
antenna and the secondary antenna are included in RANGE log.
!
It is recommended that the distance between two antennas is >1m.
It is strongly recommended the distance is 0.5m at least.
The default configuration of BX316D and BX316 is in single antenna mode;
heading output is supported only when they are in dual antenna mode. To
output heading, follow the steps below:
respectively.
ANTENNAMODE DUALGPSBDS
// Primary antenna tracks GPS L1/L2, BeiDou B1/B2;
Secondary antenna tracks GPS L1, BeiDou B2
ANTENNAMODE DUALGPSGLO // Primary antenna tracks GPS L1/L2, GLO L1/L2;
Secondary antenna tracks GPS L1, GLO L2
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3. Firmware Update and Auth Code
3.1 Firmware Update Overview
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 technical support by email support@tersus-gnss.com .
The firmware version of a Tersus receiver can be updated in field. Connect the
COM2 port of the receiver with Tersus GNSS Center, and input ‘LOG
VERSION’ in the text console, the following info will be output:
VERSION COM1 0 0.0 UNKNOWN -1 0.000 00000000 0 20161214
< 1
< BX306 G2SB2G2 008001181300000026 0020 20161123 3.0 Mar 16
2018 00:39:52
0020 is the firmware version. Refer to ‘VERSION’ in Tersus GNSS Log &
Command Reference document for more details.
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3.2 Firmware Update Using Tersus GNSS Center
1) Power on the GNSS receiver;
2) Run Tersus GNSS Center software and communicate with the receiver,
3) Click Stop button as shown below to terminate the communication
Please follow the steps below to upgrade the firmware.
refer to section 2.6 for detail. Make sure the receiver has finished
initialization, which can be confirmed by input ‘LOG VERSION’ in the
console window and the receiver will output feedback;
Figure 3.1 Main interface of Tersus GNSS Center
between the computer and the receiver;
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4) Select [Tools] -> [UpdateFirmware];
5) Select the upgrade file. When a file is selected, the file is shown in the
Figure 3.2 Stop button on Tersus GNSS Center
Figure 3.3 Find UpdateFirmware in Tools bar
Update File bar. Select port and baud rate, click [Next];
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6) The following figure shows the firmware is upgrading, two progresses are
Do not power off the receiver during the verification and update
process.
7) After the firmware is upgraded successfully, The following is shown;
Figure 3.4 Select file to update
included in the firmware update;
Figure 3.5 Update in progress
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8) Click [OK] and [Finish] buttons to close the firmware upgrade windows, the
9) After the board is booted, the firmware version can be confirmed by
cannot boot up successfully, or
cannot work well after boot up, or
cannot finish FW update successfully according to the above steps,
Figure 3.6 Firmware update successful
receiver will reset automatically.
repeating step 2.
Note:
There is Advance Setting option in the firmware update page, if a receiver
[Advance Setting] option can be selected to start FW update again.
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This option is for sophisticated users. If the customer is not
sure whether it should be selected, contact Tersus technical
support before select this option.
Figure 3.7 Advance setting for firmware update
If the [Advance Setting] is selected, the following page will be displayed, select
[Manual Hardware Reset] and click [OK]. Click [Next] in the previous interface,
power off the receiver, wait for five seconds and power on the receiver again.
Figure 3.8 Advance Update Setting
After firmware update is finished, power off the receiver, wait for five seconds
and power on the receiver again.
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3.3 Auth Code
An auth code is used to determine the features and valid time for a receiver. If
the auth code is expired, the receiver will not work. And a license requirement
is output from all the ports.
Before contacting Tersus technical support for a new auth code, input:
LOG VERSION
LOG AUTHLIST
In the text console window of Tersus GNSS Center when the receiver is
connected with computer, and send all the output information to Tersus
technical support. If the auth code application is approved, you will get a txt file,
in which command AUTHCODE and the auth code will be given, copy all of
them (Ctrl + A & Ctrl + C) and paste them to the text console window of Tersus
GNSS Center when the receiver is connected with computer.
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4. Technical Specifications
4.1 BX306 Board
4.1.1 BX306 Specifications
Table 4.1 BX306 Board Specifications
GNSS Performance
Position Accuracy
Single positioning
1.5m RMS (Horizontal)
3.0m RMS (Vertical)
RTK Positioning
10mm+1ppm (Horizontal)
15mm+1ppm (Vertical)
Time to First Fix
Cold Start: <50s
Warm Start: <30s
Reacquisition
0.5 s L1 (typical)
1.0 s L2 (typical)
Data Rate
Measurements
20Hz
Position
5Hz
Time Accuracy
20ns RMS
Velocity Accuracy
0.03m/s RMS
Measurement Precision
GPS
L1 PSR
6 cm
L1 ADR
1.0mm
L2 PSR
8 cm
L2 ADR
1.2mm
BEIDOU
L1 PSR
6 cm
L1 ADR
1.0mm
User Manual for BX Series GNSS Receiver v2.0
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L2 PSR
8 cm
L2 ADR
1.0mm
GLONASS
L1 PSR
8 cm
L1 ADR
1.0mm
L2 PSR
8 cm
L2 ADR
1.0mm
Physical Description
Size
71 * 46 * 10.3 mm
3
Weight
27g
Mechanical Drawing
HEAT SINK POSITION
1
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ENVIRONMENTAL
Operating Temperature
-40C to +85C
Storage Temperature
-55C to +95C
Humidity
MIL-STD-810G, Method 507.5 Procedure II (95%)
Random Vibration
MIL-STD 810G Method 514.6, Category 24 (7.7 g RMS)
Sinusoidal Vibration
IEC 60068-2-6 (5 g)
Bump
ISO 9022-31-06 (25 g)
Shock
Operating: MIL-STD-810G, Method 516.6, Procedure I (40 g)
Non-operating: MIL-STD-810G, Method 516.6, Procedure V
(75 g)
Power Requirement
Input Voltage
+3.3 +5%/-3% VDC
Allowable Voltage Ripple
100 mV p-p maximum
Power Consumption
2.8W (typical)
Note 1: when BX306 board is assembled in a metal case, a head sink must be
installed between the hatch area and the metal case, or the thermal
performance of the board will be decreased.
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4.1.2 Connectors on BX306 board
Pin
Signal
TYPE
Description
Comments
1
LNA_PWR
PWR
Antenna power input
Power to antenna, 3.3~12VDC.
2
3V3
PWR
Power to the board
3.3 V +5%/-3%
3
USB_D-
IO
USB data (-)
One-half of a differential pair (pins 3
and 4). Match lengths and route as a
90 Ω differential pair if USB is required
4
USB_D+
IO
USB data (+)
5
/RESETIN
I
Reset input t
Active low reset
6
USERVARF
IO
Variable frequency
output
Pin 1
Pin 19
Pin 20
There are two connectors on the BX306 board, J1 and J3, refer to the
mechanical drawing in the above table.
J1: MCX jack receptacle, straight (Johnson P/N 133-3711-202 or SAMTEC
P/N MCX- J-P-HST-SMI or equivalent)
J3: 2x10 header, 2 mm pitch (SAMTEC P/N TMM-110-03-G-D)
Figure 4.1 Connector J3 on BX306 board
Table 4.2 Interface Signals Definition
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7
EVENT2
IO
Event 2 Input
8
N.C
Not Connected
9
EVENT1
IO
Event1 input
Has a 10K pull-up resistor on board.
10
GND
GND
Ground
11
TXD1
O
COM1 transmit data
LVTTL level, the max band rate is
921600 bps.
12
RXD1
I
COM1 receive data
13
GND
GND
Ground
14
TXD2
O
COM2 transmit data
LVTTL level, the max band rate is
921600 bps.
15
RXD2
I
COM2 receive data
16
GND
GND
Ground
17PVO
Position valid
indicator
High: when RTK solution is got.
Low: other position types.
18
GND
GND
Ground
19
PPS
O
Pulse per second
output,
This pin has an internal 50 ohm line
driver. Route as a 50 Ω single-ended
trace
20
N.C
Not Connected
4.1.3 Reference Schematic of the Interface Board
If an interface board is designed to work with BX306 board, the following are
the reference schematics for the power, serial port, USB port, and CAN port.
Please contact Tersus technical support if you need more about the interface
board.
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Figure 4.2 3.3V Reference Schematic
Figure 4.3 5V Reference Schematic
Figure 4.4 Reference Schematic for a Serial Port
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User Manual for BX Series GNSS Receiver v2.0
4.2 BX306Z Board
4.2.1 BX306Z Specifications
GNSS Performance
Position Accuracy
Single positioning
1.5m RMS (Horizontal)
3.0m RMS (Vertical)
RTK Positioning
10mm+1ppm (Horizontal)
15mm+1ppm (Vertical)
Time to First Fix
Cold Start: <50s
Warm Start: <30s
Reacquisition
0.5 s L1 (typical)
1.0 s L2 (typical)
Data Rate
Measurements
20Hz
Position
5Hz
Figure 4.5 Reference Schematic for USB
Table 4.3 BX306Z Board Specifications
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Time Accuracy
20ns RMS
Velocity Accuracy
0.03m/s RMS
Measurement
Precision
GPS
L1 PSR
6 cm
L1 ADR
1.0mm
L2 PSR
8 cm
L2 ADR
1.2mm
BEIDOU
L1 PSR
6 cm
L1 ADR
1.0mm
L2 PSR
8 cm
L2 ADR
1.0mm
GLONASS
L1 PSR
8 cm
L1 ADR
1.0mm
L2 PSR
8 cm
L2 ADR
1.0mm
Physical Description
Size
100 * 60 * 11.6 mm
3
Weight
46g
Mechanical Drawing
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User Manual for BX Series GNSS Receiver v2.0
HEAT SINK POSITION
1
ENVIRONMENTAL
Operating
Temperature
-40C to +85C
Storage Temperature
-55C to +95C
Humidity
MIL-STD-810G, Method 507.5 Procedure II (95%)
Random Vibration
MIL-STD 810G Method 514.6, Category 24 (7.7 g RMS)
Sinusoidal Vibration
IEC 60068-2-6 (5 g)
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User Manual for BX Series GNSS Receiver v2.0
Bump
ISO 9022-31-06 (25 g)
Shock
Operating: MIL-STD-810G, Method 516.6, Procedure I (40 g)
Non-operating: MIL-STD-810G, Method 516.6, Procedure V (75 g)
Power Requirement
Input Voltage
+3.3 +5%/-3% VDC
Allowable Voltage
Ripple
100 mV p-p maximum
Power Consumption
2.9W (typical)
4.2.2 Connectors on BX306Z board
1. J20: 2x12 header, 2 mm pitch (SAMTEC P/N TMM-112-03-G-D)
2. J21: 2x3 header, 2 mm pitch (SAMTEC P/N TMM-103-03-G-D)
3. J1: MMCX jack receptacle, straight
Pin 1
Pin 1
Note 1: when BX306Z board is assembled in a case, a head sink must be
installed between the hatch area and the metal case, or the thermal
performance of the board will be decreased.
There are three connectors on the BX306Z board, J1, J20 and J21, refer to the
mechanical drawing in the above table.
Figure 4.6 Connectors J20 and J21 of BX306Z
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Table 4.4 2X12 Header Signals Definition
Pin
Signal
TYPE
Description
Comments
1
GND
GND
Ground
2
RTK LED
O
RTK LED. Flashes
when an RTK
correction is present.
To drive an LED, a series resistor
with a 300Ohms is required.
3
POWER_OFF
I
Powers the unit on and
off.
Drive high with a 3.3V to turn off,
leave floating or ground to keep
the unit on.
4
PPS
O
Pulse per second
output
This is 3.3V TTL level, 4mA max
drive capability.
5
VCC
PWR
Power to the board
3.3V +5%/-3%
6
VCC
PWR
Power to the board
3.3V +5%/-3%
7
Event2
1
/
CAN1_RX /
COM3_RX
1
I
Event2 – Event input
CAN1_RX – CAN
Receive line
COM3_RX – COM3
Receive line
Event2 must be 3.3V TTL level.
Connect COM3_RX to a
transceiver if RS-232 level is
required.
8
Event1
I
Event input
must be 3.3 V TTL level
9
Power LED
O
POWER Indicator,
High when unit is on.
When used to drive an LED, a
series resistor with a typical value
of 300Ohm is required.
10
Satellite LED
O
Satellite LED.
Rapid flash: <5
satellites. Slow
flash: >5 satellites.
To drive an LED, a series resistor
with 300Ohm is required.
11
COM2_CTS
I
COM2 Clear to Send –
TTL Level
Connect COM2_CTS to a
transceiver if RS-232 level is
required.
12
RESET_IN
I
RESET_IN – ground to
reset
Drive low to reset the unit.
User Manual for BX Series GNSS Receiver v2.0
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13
COM2_RTS
O
COM2 Request to
Send – TTL Level
Connect COM2_RTS to a
transceiver if RS-232 level is
required.
14
COM2_RX
I
COM2 Receive line
Connect COM2_RX to a
transceiver if RS-232 level is
required.
15
No Connect
Reserved
16
COM2_TX
O
COM2 transmit line
Connect COM2_TX to a
transceiver if RS-232 level is
required.
17
No Connect
Reserved
18
COM1_RX
I
COM1 Receive line
RS-232 Level
19
CAN1_TX /
COM3_TX
1
O
CAN1_TX – CAN
Transmit line
COM3_Transmit Data
– TTL Level
Connect CAN1_TX to TX line of a
CAN driver.
Connect COM3_TX to a
transceiver if RS-232 level is
required
20
COM1_TX
O
COM1 Transmit Data
RS-232 Level
21
USB-
I/O
USB D(-) Bi-directional
USB interface data (-)
Device Mode only.
22
USB+
I/O
USB D(+)
Bi-directional USB
interface data (+)
Device Mode only.
23
GND
GND
Ground
24
GND
GND
Ground
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Table 4.5 2x3 Header Signals Definition
Pin
Signal
TYPE
Description
Comments
1
ETH_RD-
1
Differential
pair.
Ethernet Receive line
minus.
Connect to Magnetics RD-.
2
ETH_RD+
1
Differential
pair.
Ethernet Receive line
plus.
Connect to Magnetics RD+.
3
CENT_RD
1
RD Magnetic center tap.
Connect to Magnetics RD
Centre Tap.
4
ETH_TD+
1
Differential
pair.
Ethernet Transmit line
plus.
Connect to Magnetics TD+.
5
ETH_TD-
1
Differential
pair.
Ethernet Transmit line
minus.
Connect to Magnetics TD-.
6
CENT_TD
1
TD Magnetic center tap.
Connect to Magnetics TD
Center Tap.
User Manual for BX Series GNSS Receiver v2.0
Note 1: all the ports are related to firmware release, contact Tersus technical
support before using them.
Refer to section 4.1.3 if interface board is designed.
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4.3 BX316 Board
4.3.1 BX316 Specifications
Table 4.6 BX316 Board Performance
GNSS Performance
Position Accuracy
Single positioning
1.5m RMS (Horizontal)
3.0m RMS (Vertical)
RTK Positioning
10mm+1ppm (Horizontal)
15mm+1ppm (Vertical)
Heading accuracy
0.15 degree (1m baseline)
Time to First Fix
Cold Start: <50s
Warm Start: <30s
Reacquisition
0.5 s L1 (typical)
1.0 s L2 (typical)
Data Rate
Measurements
20Hz
Position
5Hz
Time Accuracy
20ns RMS
Velocity Accuracy
0.03m/s RMS
Measurement Precision
GPS
L1 PSR
6 cm
L1 ADR
1.0mm
L2 PSR
8 cm
L2 ADR
1.2mm
BEIDOU
L1 PSR
6 cm
L1 ADR
1.0mm
L2 PSR
8 cm
L2 ADR
1.0mm
User Manual for BX Series GNSS Receiver v2.0
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GLONASS
L1 PSR
8 cm
L1 ADR
1.0mm
L2 PSR
8 cm
L2 ADR
1.0mm
Physical Description
Size
108 * 54 * 12 mm
3
Weight
50g
Mechanical Drawing
HEAT SINK POSITION
1
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ENVIRONMENTAL
Operating Temperature
-40C to +85C
Storage Temperature
-55C to +95C
Humidity
MIL-STD-810G, Method 507.5 Procedure II (95%)
Random Vibration
MIL-STD 810G Method 514.6, Category 24 (7.7 g RMS)
Sinusoidal Vibration
IEC 60068-2-6 (5 g)
Bump
ISO 9022-31-06 (25 g)
Shock
Operating: MIL-STD-810G, Method 516.6, Procedure I (40 g)
Non-operating: MIL-STD-810G, Method 516.6, Procedure V (75
g)
Power Requirement
Voltage
+5 – 12 VDC
Power Consumption
3.5W (typical)
Note 1: when BX316 board is assembled in a metal case, a head sink must be
installed between the hatch area and the metal case, or the thermal
performance of the board will be decreased.
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User Manual for BX Series GNSS Receiver v2.0
4.3.2 40pin external cable
A 40pin external cable is provided with the BX316/BX316R board and
enclosure.
Figure 4.7 Outline of the 40pin external cable
The 40pin connector of the cable is Mouser’s DF50S-40DS-1L or equivalent,
the connectors at the other side of the cable are 3pcs Mouser’s
7980DF1EA-6EP-2.5C and 2pcs 7980DF1EA-2EP-2.5C:
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User Manual for BX Series GNSS Receiver v2.0
Pin No.
Signal
Name
Ethernet
COM1
COM2
USB
CAN1
CAN2
Event1
Event2
PPS
1
N.C
2
TD1+
1
3
EVENT2
1
4
TD1-
2
5
GND
2
6
LED0
6
7
RD1+
4
8
LED1
7
9
RD1-
5
10
GND
8
11
GND
3
12
GND
2
13
N.C
14
EVENT1
1
15
GND
2
16
PPS
1
17
GND
6
18
COM1_RXD
3
19
SDA
5
20
COM1_TXD
2
21
SCL
4
22
GND
6
Table 4.7 Pin Definition of the 40pin external cable
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23
COM2_RXD
3
24
3.3V
1
25
COM2_TXD
2
26
3.3V
1
27
3.3V
1
28
CANH1_TXD
2
29
N.C
30
CANH1_RXD
3
31
OTG_5V
1
32
GND
4
33
USB_DM
2
34
3.3V
1
35
USB_DP
3
36
CANH2_TXD
2
37
USB_ID
4
38
CANH2_RXD
3
39
GND
5
40
GND
4
4.4 BX316R Board
4.4.1 BX316R Specifications
The specifications of BX316R board is the same with that of BX316 board,
refer to Table 4.6 BX316 Board Performance for details. The difference
between BX316 and BX316R is the firmware, and BX316R supports PPK
while BX316 supports RTK.
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User Manual for BX Series GNSS Receiver v2.0
4.4.2 40pin external cable
4.5 BX316D Board
4.5.1 BX316D Specifications
GNSS Performance
Position Accuracy
Single positioning
1.5m RMS (Horizontal)
3.0m RMS (Vertical)
RTK Positioning
10mm+1ppm (Horizontal)
15mm+1ppm (Vertical)
Heading Accuracy
0.15 degree (Baseline is 1m)
Time to First Fix
Cold Start: <50s
Warm Start: <30s
Reacquisition
0.5 s L1 (typical)
1.0 s L2 (typical)
Data Rate
Measurements
20Hz
Position
5Hz
Time Accuracy
20ns RMS
Velocity Accuracy
0.03m/s RMS
Measurement Precision
GPS
L1 PSR
6 cm
L1 ADR
1.0mm
L2 PSR
8 cm
The details of 40pin external cable refer to 4.3.2 40pin external cable.
Table 4.8 BX306D Board Specifications
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User Manual for BX Series GNSS Receiver v2.0
L2 ADR
1.2mm
BEIDOU
L1 PSR
6 cm
L1 ADR
1.0mm
L2 PSR
8 cm
L2 ADR
1.0mm
GLONASS
L1 PSR
8 cm
L1 ADR
1.0mm
L2 PSR
8 cm
L2 ADR
1.0mm
Physical Description
Size
71 * 46 * 9.3 mm
3
Weight
27g
Mechanical Drawing
HEAT SINK POSITION
1
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User Manual for BX Series GNSS Receiver v2.0
ENVIRONMENTAL
Operating Temperature
-40C to +85C
Storage Temperature
-55C to +95C
Humidity
MIL-STD-810G, Method 507.5 Procedure II (95%)
Random Vibration
MIL-STD 810G Method 514.6, Category 24 (7.7 g RMS)
Sinusoidal Vibration
IEC 60068-2-6 (5 g)
Bump
ISO 9022-31-06 (25 g)
Shock
Operating: MIL-STD-810G, Method 516.6, Procedure I (40 g)
Non-operating: MIL-STD-810G, Method 516.6, Procedure V
(75 g)
Power Requirement
Input Voltage
+3.3 +5%/-3% VDC
Allowable Voltage Ripple
100 mV p-p maximum
Power Consumption
2.9W (typical)
Note 1: when BX316D board is assembled in a case, a head sink must be
installed between the hatch area and the metal case, or the thermal
performance of the board will be decreased.
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4.5.2 Connectors on BX316D board
1. J1/J4: MMCX jack receptacle, straight
2. J3: 2x10 header, 2 mm pitch (SAMTEC P/N TMM-110-03-G-D)
Pin
Signal
TYPE
Description
Comments
1
LNA_PWR
PWR
Antenna power input
Power to antenna, should be
input 5VDC.
2
3V3
PWR
Power to the board
3.3V +5%/-3%
3
USB_D-
IO
USB data (-)
One-half of a differential pair
(pins 3 and 4). Match lengths
and route as a 90 Ω differential
pair if USB is required
4
USB_D+
IO
USB data (+)
5
/RESETIN
I
Reset input t
Active low reset
6
USERVARF
IO
Variable frequency
output
Pin 1
Pin 2
Pin 19
There are three connectors on the BX316D board, J1, J3 and J4, refer to the
mechanical drawing in the above table.
Figure 4.8 Connector J3 of BX316D
Table 4.9 Interface Signals Definition
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7
EVENT2
IO
Event 2 Input
8
N.C
Not Connected
9
EVENT1
IO
Event1 input
Has a 10K pull-up resistor on
board.
10
GND
GND
Ground
11
TXD1
O
COM1 transmit data
LVTTL level, the max band rate
is 921600 bps.
12
RXD1
I
COM1 receive data
13
GND
GND
Ground
14
TXD2
O
COM2 transmit data
LVTTL level, the max band rate
is 921600 bps.
15
RXD2
I
COM2 receive data
16
GND
GND
Ground
17PVO
Position valid indicator
High: when RTK solution is got.
Low: other position types.
18
GND
GND
Ground
19
PPS
O
Pulse per second
output,
This pin has an internal 50 ohm
line driver. Route as a 50 Ω
single-ended trace
20
N.C
Not Connected
Refer to section 4.1.3 if interface board is designed.
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4.6 BX306 Enclosure
4.6.1 BX306 Enclosure Specifications
Table 4.10 BX306 Enclosure Specifications
GNSS Performance
Position Accuracy
Single positioning
1.5m RMS (Horizontal)
3.0m RMS (Vertical)
RTK Positioning
10mm+1ppm (Horizontal)
15mm+1ppm (Vertical)
Time to First Fix
Cold Start: <50s
Warm Start: <30s
Reacquisition
0.5 s L1 (typical)
1.0 s L2 (typical)
Data Rate
Measurements
20Hz
Position
5Hz
Time Accuracy
20ns RMS
Velocity Accuracy
0.03m/s RMS
Measurement Precision
Refer to BX306 board in chapter 4.
Physical Description
Size
102.5 * 57 * 24.5 mm
3
Weight
150g
Mechanical Drawing
User Manual for BX Series GNSS Receiver v2.0
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ENVIRONMENTAL
Operating Temperature
-40C to +85C
Storage Temperature
-55C to +95C
Humidity
MIL-STD-810G, Method 507.5 Procedure II (95%)
Random Vibration
MIL-STD 810G Method 514.6, Category 24 (7.7 g RMS)
Sinusoidal Vibration
IEC 60068-2-6 (5 g)
Bump
ISO 9022-31-06 (25 g)
Shock
Operating: MIL-STD-810G, Method 516.6, Procedure I (40 g)
Non-operating: MIL-STD-810G, Method 516.6, Procedure V
(75 g)
Power Requirement
Voltage
+5 – 12 VDC
Power Consumption
3.2W (typical)
4.6.2 20pin external cable
A 20pin external cable is provided with the BX306 and BX316D enclosure.
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No.
Signal Definition
COM1
COM2
COM3
EVENT
PPS
1
GND
Pin 6
2
N.C
3
COM1_TX
Pin 2
4
COM2_RX
Pin 3
5
COM1_RX
Pin 3
6
COM2_TX
Pin 2
7
3.3V
Pin 1
8
3.3V
Figure 4.9 Outline of the 20pin external cable
The 20pin connector of the cable is Mouser’s DF50S-20DS-1L or equivalent,
the connectors at the other side of the cable are 3pcs Mouser’s
7980DF1EA-6EP-2.5C and 2pcs 7980DF1EA-2EP-2.5C:
Table 4.11 Pin Definition of the 20pin external cable
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9
PPS
Pin 1
10
COM2_SCL
Pin 4
11
EVENT1
Pin 1
12
COM2_SDA
Pin 5
13
GND
Pin 6
14
GND
Pin 6
15
COM3_TX
Pin 2
16
GND
Pin 2
17
COM3_RX
Pin 3
18
GND
Pin 2
19
3.3V
Pin 1
Pin 1
20
N.C
4.7 BX316 Enclosure
4.7.1 BX316 Enclosure Specifications
GNSS Performance
Position Accuracy
Single positioning
1.5m RMS (Horizontal)
3.0m RMS (Vertical)
RTK Positioning
10mm+1ppm (Horizontal)
15mm+1ppm (Vertical)
Heading accuracy
0.15 degree (1m baseline)
Time to First Fix
Cold Start: <50s
Warm Start: <30s
Table 4.12 BX316 Enclosure Specifications
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Reacquisition
0.5 s L1 (typical)
1.0 s L2 (typical)
Data Rate
Measurements
20Hz
Position
5Hz
Time Accuracy
20ns RMS
Velocity Accuracy
0.03m/s RMS
Measurement Precision
GPS
L1 PSR
6 cm
L1 ADR
1.0mm
L2 PSR
8 cm
L2 ADR
1.2mm
BEIDOU
L1 PSR
6 cm
L1 ADR
1.0mm
L2 PSR
8 cm
L2 ADR
1.0mm
GLONASS
L1 PSR
8 cm
L1 ADR
1.0mm
L2 PSR
8 cm
L2 ADR
1.0mm
Physical Description
Size
111 * 57 * 24.5 mm
3
Weight
150g
Mechanical Drawing
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User Manual for BX Series GNSS Receiver v2.0
ENVIRONMENTAL
Operating Temperature
-40C to +85C
Storage Temperature
-55C to +95C
Humidity
MIL-STD-810G, Method 507.5 Procedure II (95%)
Random Vibration
MIL-STD 810G Method 514.6, Category 24 (7.7 g RMS)
Sinusoidal Vibration
IEC 60068-2-6 (5 g)
Bump
ISO 9022-31-06 (25 g)
Shock
Operating: MIL-STD-810G, Method 516.6, Procedure I (40 g)
Non-operating: MIL-STD-810G, Method 516.6, Procedure V
(75 g)
Power Requirement
Voltage
+5 – 12 VDC
Power Consumption
3.2W (typical)
4.7.2 40pin external cable
The details of 40pin external cable refer to 4.3.2 40pin external cable.
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4.8 BX316R Enclosure
4.8.1 BX316R Enclosure Specifications
Table 4.13 BX316R Enclosure Specifications
GNSS Performance
Position Accuracy
Single positioning
1.5m RMS (Horizontal)
3.0m RMC (Vertical)
Time to First Fix
Cold Start: <50s
Warm Start: <30s
Reacquisition
0.5 s L1 (typical)
1.0 s L2 (typical)
Data Rate
Measurements
20Hz
Position
5Hz
Time Accuracy
20ns RMS
Velocity Accuracy
0.03m/s RMS
Measurement Precision
GPS
L1 PSR
6 cm
L1 ADR
1.0mm
L2 PSR
8 cm
L2 ADR
1.2mm
BEIDOU
L1 PSR
6 cm
L1 ADR
1.0mm
L2 PSR
8 cm
L2 ADR
1.0mm
GLONASS
L1 PSR
8 cm
L1 ADR
1.0mm
L2 PSR
8 cm
User Manual for BX Series GNSS Receiver v2.0
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L2 ADR
1.0mm
Physical Description
Size
111 * 57 * 24.5 mm
3
Weight
150g
Mechanical Drawing
ENVIRONMENTAL
Operating Temperature
-40C to +85C
Storage Temperature
-55C to +95C
Humidity
MIL-STD-810G, Method 507.5 Procedure II (95%)
Random Vibration
MIL-STD 810G Method 514.6, Category 24 (7.7 g RMS)
Sinusoidal Vibration
IEC 60068-2-6 (5 g)
Bump
ISO 9022-31-06 (25 g)
Shock
Operating: MIL-STD-810G, Method 516.6, Procedure I (40 g)
Non-operating: MIL-STD-810G, Method 516.6, Procedure V
(75 g)
Power Requirement
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User Manual for BX Series GNSS Receiver v2.0
Voltage
+5 – 12 VDC
Power Consumption
3.5W (typical)
4.8.2 40pin external cable
4.9 BX316D Enclosure
4.9.1 BX316D Enclosure Specifications
GNSS Performance
Position Accuracy
Single positioning
1.5m RMS (Horizontal)
3.0m RMC (Vertical)
RTK Positioning
10mm+1ppm (Horizontal)
15mm+1ppm (Vertical)
Heading accuracy
0.15 degree (1m baseline)
Time to First Fix
Cold Start: <50s
Warm Start: <30s
Reacquisition
0.5 s L1 (typical)
1.0 s L2 (typical)
Data Rate
Measurements
20Hz
Position
5Hz
Time Accuracy
20ns RMS
Velocity Accuracy
0.03m/s RMS
Measurement Precision
GPS
L1 PSR
6 cm
The details of 40pin external cable refer to 4.3.2 40pin external cable.
Table 4.14 BX316D Enclosure Specifications
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L1 ADR
1.0mm
L2 PSR
8 cm
L2 ADR
1.2mm
BEIDOU
L1 PSR
6 cm
L1 ADR
1.0mm
L2 PSR
8 cm
L2 ADR
1.0mm
GLONASS
L1 PSR
8 cm
L1 ADR
1.0mm
L2 PSR
8 cm
L2 ADR
1.0mm
Physical Description
Size
100 * 57 * 24 mm
3
Weight
150g
Mechanical Drawing
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ENVIRONMENTAL
Operating Temperature
-40C to +85C
Storage Temperature
-55C to +95C
Humidity
MIL-STD-810G, Method 507.5 Procedure II (95%)
Random Vibration
MIL-STD 810G Method 514.6, Category 24 (7.7 g RMS)
Sinusoidal Vibration
IEC 60068-2-6 (5 g)
Bump
ISO 9022-31-06 (25 g)
Shock
Operating: MIL-STD-810G, Method 516.6, Procedure I (40 g)
Non-operating: MIL-STD-810G, Method 516.6, Procedure V
(75 g)
Power Requirement
Voltage
+5 – 28 VDC
Power Consumption
2.8W (typical)
4.9.2 20pin external cable
The details of 40pin external cable refer to 4.6.2 20pin external cable.
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5.Typical Application
5.1 Data Collection on Internal eMMC
Before data collection, please ensure enough space is available on the
internal eMMC card, refer to section 0 to delete files on the internal
eMMC card if needed.
!
The size of the logging:
LOG FILE RANGEB ONTIME 1 (about 110KByte/min if 20 satellites
are tracked, about 165KByte/min if 30 satellites are tracked)
If the collection frequency is increased, the data size will be increased
proportionately.
!
Rules for the file name & update time in the external SD card:
1) File name: there are two situations of file naming. A) Satellite
signals are detected when creating file, the file is named as OEM
board serial number last 5 digits_YYYYMMDDHHMMSS.dat; B)
Satellite signals have not been detected when creating file, the file
is named as 8-digits.dat in which the 8-digit number represents the
count every 100 seconds after the first boot. For example, the
All the BX boards/enclosures are embedded with up to 4GB internal eMMC
card, which brings convenience for data collection.
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receiver has worked 500 hours 40min since boot up, (500*3600 +
40*60)/100 = 18024, the file name is 00018024.dat. When the
satellite signals are detected, the time is stored in the
8-digit.dat.attr file.
2) Update time: if the receiver hasn’t gotten the GNSS time, the
update time of the files will be19800000 0:0 (YYYYMMDD
HH:MM). If the receiver has gotten the GNSS time, the update time
will be the UTC time.
1) STORETYPE EMMC // the data will be saved on the internal eMMC card
2) Input all the loggings below:
3) SAVECONFIG //save the configuration above
Two modes can be selected for data collection: manually (default) and
automatically.
If you want to save the loggings manually after the board is power on, please
follow the steps below to configure the BX306 enclosure.
Steps of saving data on eMMC manually, take recording static data as
example:
LOG FILE RANGEB ONTIME 1 //save raw measurements
LOG FILE GPSEPHEMB ONTIME 30 //save GPS ephemeris
LOG FILE GLOEPHEMERISB ONTIME 30 //save GLONASS ephemeris
LOG FILE BDSEPHEMERISB ONTIME 30 //save BeiDou ephemeris
LOG FILE BESTPOSB ONTIME 30 //save the best position solution
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4) LOGFILE OPEN //open the file to start data collection
5) LOGFILE CLOSE //close the file to stop data collection
1) STORETYPE EMMC // the data will be saved on the internal eMMC card
2) LOGFILE AUTO //configure auto data collection
3) Input all the loggings below:
4) SAVECONFIG //save the configuration above
5) Power cycle the board and data collection start.
6) LOGFILE CLOSE //close the file after data collection is finished
The data collection will not be executed without a power cycle.
If you want to save the loggings automatically after the board is power on,
please follow the steps below.
Steps of saving data on eMMC automatically, take the example of recording
static data:
LOG FILE RANGEB ONTIME 1 //save raw measurements
LOG FILE GPSEPHEMB ONTIME 30 //save GPS ephemeris
LOG FILE GLOEPHEMERISB ONTIME 30 //save GLONASS ephemeris
LOG FILE BDSEPHEMERISB ONTIME 30 //save BeiDou ephemeris
LOG FILE BESTPOSB ONTIME 30 //save the best position solution
The last step is recommended although it is not mandatory. If power is off
during the file collection, the data collected in the last second may not be
saved.
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5.2 Download Files from Internal eMMC
The files saved on the internal eMMC card can be copied to the computer via a
serial port.
If files are downloaded from a BX316 or a BX316R enclosure, the USB port is
recommended. A specific USB cable (5pin to USB Type A male cable) is used
to connect the USB port to the computer, refer to Figure 5.3 and Figure 4.7.
Figure 5.1 Download Files from eMMC Card with a Serial Port
Figure 5.2 Download Files from eMMC Card with an USB Port
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1) Refer to Figure 5.1 and Figure 5.2 to create connection between a
2) Run TersusDownload software on the computer;
3) Select the serial port to communicate with the receiver;
Figure 5.3 5pin to USB Type A male cable
After the UART to USB converter or the 5pin to USB Type A male cable is
connected to the computer, it will be mapped to a serial port, refer to section
2.2 UART to USB converter.
Detailed steps to download files from eMMC card are as follows:
BX306/BX316 receiver and a computer;
Figure 5.4 File download using Tersus Download
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4) Select the download speed (using USB port for example). Select baud rate
5) After completing the above two steps, click [Start] and it pops out below
!
The downloading rate is about 2MB/min, the downloading time can be
estimated based on it.
Figure 5.5 Select serial port for Download Port
if a serial port is used to download the files;
Figure 5.6 Select download speed
window. Select the DownloadPath to store the incoming files and check the
files to be downloaded, click [Download] to start downloading.
Figure 5.7 File downloading in progress
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5.3 Connect BX306 to an External Bluetooth
BT120 can only be paired with an Android phone or tablet; it cannot
be paired with an iPhone or iPad.
Tersus provides an external Bluetooth BT120, as well as the cable for the
BX306 receiver. For more details about the Bluetooth module, please go to
Tersus website https://www.tersus-gnss.com/product/bluetooth-bt120 .
Figure 5.8 BT120 and the cable
Figure 5.9 Outline of BX306 Connected to BT120
The function of Bluetooth module is to communicate the BX306 enclosure with
other Bluetooth device.
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5.3.1 Communicate with NTRIP Client App
1) Connect a BT120 to COM1 of the BX306 enclosure.
2) Connect COM2 of the BX306 to a laptop.
3) Connect an antenna to the BX306, and power on it.
4) Pair your smartphone with the BT120. The default ID of BT120 is HB-02,
5) Run NTRIP Client App in the smartphone, click the Settings button to go to
The steps of BX306 communicating with NTRIP Client App are as follows:
the pair password is 1234, after paired, HB-02 will be listed in the paired
devices.
the Settings page:
Figure 5.10 Click Settings in NTRIP Client app
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6) In the ‘Receiver Settings’, input the Bluetooth name which has been paired
7) In the ‘NTRIP Settings’, all the upper six fields (Network Protocol, Caster IP,
Figure 5.11 Setting page of the NTRIP Client app
in step 3), all other options keep the default.
Figure 5.12 Input Bluetooth name in the receiver settings
Caster Port, Username, Password and Data Stream) are mandatory, input
them with the information obtained from the NTRIP service provider. If
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