User's Manual

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Table Of Contents

Trimble® R7/R8 GPS Receiver User Guide
Introduction
- Related Information
- Warnings and Cautions
- Technical Assistance
- Your Comments
Trimble R7 GPS Receiver
Overview
- Introduction
- Features
- Use and Care
- COCOM Limits
Setting up the Receiver
- Introduction
- Parts of the Receiver
- Setup Guidelines
- Postprocessed Setup
- PoleMounted Setup
- Backpack Setup
- Other System Components
General Operation
- Introduction
- Button Functions
- LED Behavior
- Starting and Stopping the Receiver
- Logging Data
  - Logging internally
  - Logging to a Trimble controller
- Resetting to Defaults
- Formatting a CompactFlash Card
- Batteries and Power
Configuration
- Introduction
- Configuring the Receiver in Real Time
- Configuring the Receiver Using Application Files
- Application Files
Transferring Data
- Introduction
- Connecting to the Office Computer
- Transferring Data
- Transferring Files Directly from a CompactFlash Card
- Deleting Files in the Receiver
- Supported File Types
Software Utilities
- Introduction
- GPS Configurator Software
  - Installing GPS Configurator
  - Configuring the Trimble R7 receiver
- WinFlash Software
Specifications
- Introduction
- Physical Specifications
- Positioning Specifications
- Technical Specifications
Default Settings
- Introduction
- Default Settings
- Resetting to Factory Defaults
- Examples
Cables and Connectors
- Introduction
- Port 1, 2, and 3 Connectors
- Power/serial data cable
- Event Marker/1PPS Cable
- GPS Antennas and Cables
Event Marker Input and 1PPS Output
- Introduction
- Event Marker Input
  - Enabling and configuring event marker input
- 1PPS Output
Trimble R8 GPS Receiver
Overview
- Introduction
- Features
- Use and Care
- COCOM Limits
Setting up the Receiver
- Introduction
- Parts of the Receiver
  - Front panel
  - Lower housing
- Setup Guidelines
- PoleMounted Setup
- Other System Components
  - Radios
  - Cellular modems and external radios
General Operation
- Introduction
- Button Functions
- LED Behavior
  - LED flash patterns
- Starting and Stopping the Receiver
- Logging Data
  - Logging internally
  - Logging to a Trimble controller
- Resetting to Defaults
- Batteries and Power
Configuration
- Introduction
- Configuring the Receiver in Real Time
- Configuring the Receiver Using Application Files
- Application Files
Software Utilities
- Introduction
- GPS Configurator Software
  - Installing GPS Configurator
  - Configuring the Trimble R8 receiver
- WinFlash Software
Specifications
- Introduction
- Physical Specifications
- Positioning Specifications
- Technical Specifications
Default Settings
- Introduction
- Default Settings
- Resetting to Factory Defaults
  - Default behavior
  - Power up settings
Cables and Connectors
- Introduction
- Port 1 and 2 Connectors
- Power/Serial Data Cables
Appendixes Trimble R7 / Trimble R8
NMEA-0183 Output
- Introduction
- NMEA-0183 Outputs
- Common Message Elements
  - Message values
- NMEA Messages
RTCM Output
- RTCM Output
- Message Scheduling
Troubleshooting
Index

Trimble R7/R8 GPS Receiver User Guide 177

NMEA-0183 Output A

Trimble R7 and R8

GST Position Error Statistics

An example of the GST message string is shown below. Table A.5

describes the message fields.

$GPGST,172814.0,0.006,0.023,0.020,273.6,

0.023,0.020,0.031*6A

Table A.5 GST message fields

Field Meaning

1 UTC of position fix

2 RMS value of the pseudorange residuals (includes carrier phase

residuals during periods of RTK(float) and RTK(fixed) processing)

3 Error ellipse semi-major axis 1 sigma error, in meters

4 Error ellipse semi-minor axis 1 sigma error, in meters

5 Error ellipse orientation, degrees from true north

6 Latitude 1 sigma error, in meters

7 Longitude 1 sigma error, in meters

8 Height 1 sigma error, in meters