Trimble Outdoors 64057-00-ENG - page 46

A Trimble Standard Interface Protocol

44 Trimble ThunderBolt E GPS Disciplined Clock User Guide

Command Packet 0x31: Accurate Initial Position (XYZ Cartesian ECEF)

This packet provides an accurate initial position to the GPS receiver in XYZ

coordinates. Either the single precision or the double precision version of this packet

may be used, however, we recommend using the double precision version for greatest

accuracy. ThunderBolt E uses this position for performing time-only fixes. If a survey is

in progress when this command is sent, the survey is aborted and this position data is

used immediately. ThunderBolt E will automatically switch to the Over-Determined

Timing mode when this command is issued. Note that this position is not

automatically saved to flash memory. If you want to save this position, first set the

position, wait at least 2 seconds and then use packet 0x8E-A6 to save the position.

Command Packet 0x31 Data Format (single precision)

Command Packet 0x31 Data Format (double precision)

Command Packet 0x32: Accurate Initial Position (Latitude, Longitude,

Altitude)

This packet provides an accurate initial position to the GPS receiver in latitude,

longitude, and altitude coordinates. Either the single precision or the double precision

version of this packet may be used, however, we recommend using the double

precision version for greatest accuracy. The GPS receiver uses this position for

performing time-only fixes. If a survey is i n progress when this command is issu ed, the

survey is aborted, and this position data is used immediately. The coordinates entered

must be in the WGS-84 datum. ThunderBolt E will automatically switch to the

Over-Determined Timing mode when this command is issued. Note that this position

is not automatically saved to flash memory. If you want to save this position, first set

the position, wait at least 2 seconds and then use packet 0x8E-A6 to save the position.

Note – When converting from degrees to radians use the following value for

p= 3.1415926535898

Byte Item Type Units

0-3 X-axis Single Meters

4-7 Y-axis Single Meters

8-11 Z-axis Single Meters

Byte Item Type Units

0-7 X-axis Double Meters

8-15 Y-axis Double Meters

16-23 Z-axis Double Meters

Contents

Main Page USER GUIDE 2 Trimble ThunderBolt E GPS Disciplined Clock User Guide Trimble ThunderBolt E GPS Disciplined Clock User Guide 3 Page Safety Information Warnings and Cautions C Operation and storage C AC adaptor safety An international adaptor kit is provided with the ThunderBolt E GPS disciplined clock. Contents 2 Setting up and Running the ThunderBolt E . . . . . . . . . . . . . . . . . . 13 Page Introduction Operation Features Hardware features Interface protocols Standard timing software features C Technical assistance Your comments Page Setting up and Running the ThunderBolt E System requirements Hardware Computer System software Installing and using the software B Trimble GPS Monitor C Page TSIP Page Page ThunderBolt E starter kit Setting up the ThunderBolt E Page Hardware Integration ThunderBolt E system architecture ThunderBolt E module Environmental specifications Trimble ThunderBolt E GPS Disciplined Clock User Guide 25 Hardware Integration 3 C Page Bullet antenna specifications Physical characteristics Environmental specifications Antenna cable Page I/O connector pin-out Power supply and connector Page Firmware Integration Firmware configuration Firmware upgrades Firmware features APPENDIX A Trimble Standard Interface Pr otocol Introduction Interface scope Automatic output packets Customizing operations parameters 36 Trimble ThunderBolt E GPS Disciplined Clock User Guide Packet I/O control (segment 4) Serial port configuration (segment 5) Accurate position (segment 7) Timing outputs (segment 6) Trimble ThunderBolt E GPS Disciplined Clock User Guide 37 Packets output at power-up Command packets: User to ThunderBolt E The following table summarizes the packets that can be sent to the ThunderBolt E by the user: 38 Trimble ThunderBolt E GPS Disciplined Clock User Guide Report packets: ThunderBolt E to User The following table summarizes the packets output by ThunderBolt E: Trimble ThunderBolt E GPS Disciplined Clock User Guide 39 Packet structure Packet descriptions Packet descriptions used in run mode Page Page Page Page 46 Trimble ThunderBolt E GPS Disciplined Clock User Guide Page Page Page Page C Page Page 54 Trimble ThunderBolt E GPS Disciplined Clock User Guide Report Packet 0x58 Almanac Data Type 2 Note All angles are in radians. Report Packet 0x58 Ionosphere Data Type 4 Report Packet 0x58 Almanac Health Data Type 3 Trimble ThunderBolt E GPS Disciplined Clock User Guide 55 Report Packet 0 x 58 UTC Data Type 5 (continued) Report Packet 0 x 58 Ephemeris Data Type 5 Page Page 58 Trimble ThunderBolt E GPS Disciplined Clock User Guide Page Page C 62 Trimble ThunderBolt E GPS Disciplined Clock User Guide Command Packet 0xBB Data Format (query only) Report Packet 0xBB Data Format C TSIP Superpackets Page Page Page Page Trimble ThunderBolt E GPS Disciplined Clock User Guide 69 Command Packet 0x8E-A4 Test Mode 0 Data Format Command Packet 0x8E-A4 Test 1 Mode 1Data Format Command Packet 0x8E-A4 Test Mode 3 Data Format Page Page 72 Trimble ThunderBolt E GPS Disciplined Clock User Guide Command Packet 0x8E-A8 Type 0 Data Format Command Packet 0x8E-A8 Type 1 Data Format Trimble ThunderBolt E GPS Disciplined Clock User Guide 73 Command Packet 0x8E-A8 Type 2 Data Format Command Packet 0x8E-A8 Type 3 Data Format 74 Trimble ThunderBolt E GPS Disciplined Clock User Guide Command Packet 8E-A9 Data Format Command Packet 0x8E-AB Data Format Page Page Page Page Page 80 Trimble ThunderBolt E GPS Disciplined Clock User Guide Report Packet 0x8F-AC Trimble ThunderBolt E GPS Disciplined Clock User Guide 81 82 Trimble ThunderBolt E GPS Disciplined Clock User Guide Page Page Page www.trimble.com