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Precis-BX305
TERSUS Precis-BX305 User Manual
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User Manual
Precis-BX305
Precise GNSS RTK bo
ard
www
.tersus-gnss.com
Aug, 2016
2
Table of Contents
Default Chapter
3
Table of Contents
3
1 Introduction
10
1.1. Overview
10
1.2. Receiver Features
10
Figure 1 Outlook of Precis-BX305 Board
10
1.3. System Overview
11
Figure 2 System Block Diagram
11
1.4. Electronic Characteristics
12
Absolute Maximum Ratings
12
Table 1 Description of Absolute Maximum Ratings
12
Operation Ratings
13
Table 2 Description of Operation Ratings
13
Port Description (Precis-BX305 V1.1 & V2.0)
14
Figure 3 Port Description of Precis-BX305
14
Figure 4 Identify Precis-BX305 V1.1 & V2.0 and Pin Definitions
15
Figure 5 Identify Precis-BX305 V1.1 & V2.0 by Printed Labels
16
Table 3 Description of Precis-BX305 Electronic Interfaces
16
Micro_Usb Power Supply Port
17
COM1/COM2 Port
17
Figure 6 Schematic of Internal Micro_Usb Connector
17
Figure 7 Back Panel View of Precis-BX305 Board
17
Table 4 Pin List of Precis-BX305 V1.1 COM1 and COM2 Port
17
Table 5 Pin Definition of Precis-BX305 V1.1 COM1 and COM2 Port
18
Table 6 Pin List of Precis-BX305 V2.0 COM1 and COM2 Port
18
LED Indicator
19
SMA1 Port
19
SMA2 Port
19
Table 7 Pin List of Precis-BX305 V2.0 COM1 and COM2 Port
19
Table 8 Definition of LED Indicators
19
USB Port
20
1.5. Accessories and Connection
20
Uart_To_Usb Converter Module
20
Figure 8 Labels of Precis-BX305 V1.1 & V2.0 Uart_To_Usb Converter Cables
20
Table 9 PPS Signal Description
20
Data Logger Module and Cable
21
Figure 9 Connection between Precis-BX305 and Uart_To_Usb Converter
21
Figure 10 Labels of Precis-BX305 V1.1 & V2.0 Data Logger Cables
21
Pixhawk Cable
22
Figure 11 Connection between Precis-BX305 and Uart_To_Data Logger
22
Figure 12 Labels of Precis-BX305 V1.1 & V2.0 Pixhawk Cables
22
Radio Module and Cable
23
Figure 13 Connection between Pixhawk and Precis-BX305
23
Figure 14 Labels of Precis-BX305 V1.1 & V2.0 Radio Cables
23
Bluetooth Module and Cable
24
Figure 15 Connection between Pixhawk and Precis-BX305
24
Figure 16 Labels of BX305 V1.1 & V2.0 Bluetooth Cables
24
Figure 17 Connection between Bluetooth Module and Precis-BX305
25
2 Setting up the Receiver
26
Connect to Computer
26
Figure 18 Demonstration of Wired Connection to Computer
26
Connect to Antenna
27
Figure 19 Demonstration of Precis Board in Window Device Manager
27
Table 10 Default Serial Port Parameter of Precis-BX305 COM1 and COM2
27
Connect to Base Station
28
Figure 20 Recommended GNSS Antenna for Precis-BX305
28
Figure 21 Three Ways to Connect to the Base Station Data Stream: Wired Connection (Upper), UHF
28
Connect to Base Station with UHF Radio Module
29
Figure 22 Overview of Tersus GNSS RTK Systems
29
Figure 23 Establish Serial Connection with Tersus GNSS Center
30
Connect to CORS with External Bluetooth Module and Mobile Phone
31
Figure 24 Text Console Window of Tersus GNSS Center
31
Figure 25 Demonstration of Connecting Precis BX305 to CORS Network
32
Figure 26 Demonstration of Connecting Bluetooth Module, Mobile Phone, Precis-BX305 and Supply Supplier
33
Integration with Autopilots
34
Figure 27 Example of NTRIP Settings
34
Figure 28 Demonstration of Connection Status
34
Figure 29 Demonstration of Integration with Pixhawk Autopilot
35
Table 11 Pin Definition of Pixhawk GPS Port (from Left to Right)
35
Set up Base Station
36
Obtain the Coordinate of the Base Station
36
Figure 30 Precis-BX305 Board Is Recognized by Pixhawk and Mission Planner
36
Antenna Installation
37
Observation Environment
37
Log Data to SD Card
37
Figure 31 Demonstration of Antenna Height Measurement
37
Configuring Raw Observation Output
38
Figure 32 External Data Logger
38
Hardware and Software Required
38
Connect to Data Logger
39
Figure 33 Enter Commands for Logging Raw Observation and Broadcasting Ephemeris Data
39
Export Logged Data and Format Conversion
40
Installation and Operation Guideline
40
ESD Protection
40
Figure 34 Connection of Precis-BX305, External Data Logger and Power Supplier
40
Avoid Signal Inference
41
3 Commands Description
42
Overview of Command System
42
Serial Port Control Commands
42
Configuring Serial Port Baud Rate (COM)
42
Table 12 Configuring Serial Port Baud Rate Command
42
Configuring Serial Port Mode (INTERFACEMODE)
43
Display Current Serial Port Configuration (LOG COMCONFIG)
43
Table 13 Change Serial Port Mode
43
Table 14 Serial Port Mode
43
Table 15 Display Current Serial Port Configuration
43
Satellite Control Commands
44
Controlling Satellite System (SYSCONTROL)
44
Set Elevation Mask (ECUTOFF)
44
Station Coordinate Control Commands
44
Table 16 Enable/Disable Satellite System
44
Table 17 Set Elevation Mask
44
Cancelling Fixed Coordinate (FIX NONE)
45
Choose Undulation (UNDULATION)
45
Fix Base Station Coordinate (FIX POSITION)
45
Table 18 Fix the Coordinate of the Base Station
45
Table 19 Cancel the Fixed Coordinate
45
Table 20 Sets Ellipsoid-Geoid Separation
45
Output Control Commands
46
NMEA Talker Configuration (NMEATALKER)
46
Configuring NMEA Output (LOG NMEA)
46
Configuring Raw Observation Output (LOG RANGECMPB)
46
Table 21 Change the NMEA Talker During NMEA Output
46
Table 22 Log Nmea Message
46
Configuring GPS Ephemeris Output (LOG GPSEPHEMB)
47
Configuring GLONASS Ephemeris Output (LOG GLOEPHEMRISB)
47
Configuring Beidou Ephemeris Output (LOG BD2EPHEMB)
47
Table 23 Log Compressed Binary Version of Observation Data
47
Table 24 Configuring GPS Ephemeris Output
47
Table 25 Configuring GLONASS Ephemeris Output
47
Configuring RTCM2 Output (LOG RTCM)
48
Configuring RTCM 3 Output (LOG RTCM3)
48
Table 26 Configuring Beidou Ephemeris Output
48
Table 27 Log Observations in RTCM2.X Format
48
Table 28 Log Observations in RTCM3 Information
48
Version Information Commands (LOG VERSION)
49
Configuration Management Commands
49
Saving Configurations (SAVECONFIG)
49
Table 29 Display Version Information
49
Reset to Factory Mode (FRESET)
50
Check Logged Message Types
50
Table 30 Save Current Configuration
50
Table 31 Reset to Factory Mode
50
Table 32 Check Logged Message Types
50
Configuring PPS Output
51
Output Cancellation Commands
51
Cancelling Particular Output (UNLOG)
51
Table 33 Check Logged Message Types
51
Table 34 Cancel a Particular Output
51
Cancelling All Output (UNLOGALL)
52
Table 35 Cancell All Output
52
4 Specifications
53
Performance Specification
53
Table 36 Performance Specification of Precis-BX305
53
Physical Specification
54
Table 37 Physical Specification of Precis-BX305
54
5 Output Format
55
NMEA Sentences
55
General Sentence Format
55
GGA Sentence
55
RMC Sentence
56
VTG Sentence
57
GSA Sentence
57
GSV Sentence
58
RTCM Messages
58
RTCM 2 Messages
58
RTCM 3 Messages
59
6 RTK Configure Example
61
7 Trouble Shooting
62
8 Terminology
63
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TERSUS Precis-BX305 Specifications
General
Model
Precis-BX305
Operating Temperature
-40°C to +85°C
Communication Interface
CAN, USB
Data Format
NMEA
Storage Temperature
-55°C to +85°C
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