Acutime 2000 Synchronization Kit
 Timing and Synchronization Group
 Software and Firmware License, Limited Warranty
 Limitation of Liability
 Contents
 Acutime 2000 Installation
 NTP Software Installation and Configuration
 Trimble Standard Interface Protocol
 Timing Receiver Monitor
 Glossary Index
 List of Figures
Page
 List of Tables
 List of Tables
 List of Tables
 Xvi Acutime 2000 Synchronization Kit User Guide
 Acutime 2000 Synchronization Kit User Guide Xvii
Page
 Scope and Audience
About This Manual
 Organization
 Reader Feedback
 Related Information
Update Notes
World Wide Web WWW Site
 Document Conventions
Abbreviations
Technical Assistance
Page
 Overview
Introduction
 Acutime 2000 GPS Smart Antenna Features
 Acutime 2000 GPS Smart Antenna Enclosure
 Starter Kit
 Getting Started
 Connecting the Smart Antenna
 Connection Diagram
Connecting the Computer and Power Source
 Communicating with the Acutime
 Acutime 2000 Installation
 Mounted Antenna
Choosing a Location
 Acutime 2000 Installation
 Mounting the Smart Antenna
 Routing and Securing the Interface Cable
 Connecting the Host System
 Acutime 2000 Connections
 Acutime 2000 Interface Connector
Interface and Power Connections
 Acutime 2000 12-pin Connector format
 Mating Connectors
Interface Cables and Connectors
Antenna Mating Manufacturer Description Connector
 Pin-Outs
Signal Description Wire Color Protocol Acutime Connector
Acutime 2000 RS-422 Cable Pin-Out
 Acutime 2000 RS-232 Cable Pin-Out
 Connection Instructions
Power Connection Red and Black Wires
Timing Pulse Connections
 Port B
Serial Port Connections
 Port a
Event Input
Page
 Start-Up
System Operation
 Satellite Masks
Default Satellite Mask Settings
Mask Setting
Automatic Operation
 Pdop Mask
SNR Mask
 Tracking Modes
Self-Survey Mode
 Overdetermined Clock Mode
 PPS Output Options
 PPS Quantization Error
PPS Quantization Error
 Removing the Quantization Error from the PPS Output
 External Event Input
Cable Delay Compensation
 Port B
Serial Data Communication
Port a Timing
 System Operation
 GPS Timing
 Timing Operation
 Timing Pulse Output PPS
 Using the Acutime 2000 in Mobile Applications
 Customizing Acutime 2000 Operations
 OEM Configuration segment
Receiver Configuration segment
Parameter Factory default Set Request Report
 PPS Configuration segment
Port a and B Configuration segment
Position Information segment
 Parameter Factory default Set Request Report Haveutc
Nmea Configuration segment
UTC Information segment
 System Operation Acutime 2000 Synchronization Kit User Guide
 Network Time Protocol
NTP Software Installation and Configuration
 NTP Time Server Requirements
NTP Time Servers
 Software Sources and Compatibility
 Installation Support
Pre-Installation Check List
 GPS Preparation
 Host System Preparation
 Operating System Specific Information
 Time Transfer Cable Connection
Time Transfer Connection Diagram
 Optional Connections
 NTP Software Installation
 NTP Configuration File
NTP Configuration File
 Unit Number
Acutime Configuration
 Network Server Selection
 Additional Configuration Information
 Windows NT Installation
 Automatic Installation
 Create the Configuration File
Manual Installation
 NTP Software Installation and Configuration
 Copying Executable Files
 Copy NTPQ.EXE, NTPDATE.EXE, NTPDC.EXE, NTPTRACE.EXE
 Type instsrv c\winnt\system32\ntpd.exe
Installing the Service
Page
 Starting the Service
 Unix Installation
 Create the Configuration File
 Cd /dev Ln -s ttyS0 /dev/Acutime0
Set Up Device Links
 Hpux
System Serial Ports and Symbolic Link Names
 Disabling Serial Port Services Using an Administrative Tool
Hardware Configuration
 Copying Executable Files
 System Initialization
 Start NTP
Monitoring NTP
 Event Log Entries
NTP Events on Windows NT
 NTP Software Installation and Configuration
 Sample Unix Log Entries
Unix System Log Files
 Ntpq The NTP Query Utility
 Acutime NTP reference clock is identified in the list as
NTP is Communicating with the Acutime NTP Reference Clock
 No Response from the Acutime NTP Reference Clock
NTP is not Running
 NTP Software Installation and Configuration
 Interface Scope
Trimble Standard Interface Protocol
 Packet Structure
 Physical Interface Characteristics
 Table A-2
Nomenclature
Protocol Capabilities
Table A-1 Ace UTC Port Translation Table
 Event Input
Primary Port Features
Secondary Port Features Acutime
Table A-3 Secondary Port Features Acutime
 Event Reporting Table A-5 Event Packets
Packets Output at Power-Up
Secondary Port Features Ace UTC
Table A-4 Secondary Port Features Ace UTC
 Output ID Description
Table A-6 Packets Output at Power-Up
Table A-7 Receiver Warm Start Commands
Receiver Warm Start
 Table A-8 Background Packets
Default Background Packets for Acutime
 Table A-9 Automatic position and Velocity Reports
Default Automatic Position and Velocity Reports for Acutime
 Table A-10 Low-Latency Timing Packets
Low-Latency Timing Packets
Lltp Packet ID Description Request Packet ID
 Input ID Description Output ID
Event Packets
Satellite Data Packets
Table A-11 Satellite Data Packets
 Table A-12 Customizing Receiver Operations
Customizing Receiver Operations
 Table A-13 Advanced Packets
 Table A-14 Command Packets Sent to the Receiver
Command Packets Sent to the Receiver
Input Packet Description Output ID
 8E-AB
 Table A-15 Report Packets Sent by GPS Receiver to User
Report Packets Sent by the GPS Receiver to the User
Output ID Packet Description Input
 ATrimble Standard Interface Protocol
 8F-AD
 DLE id data string bytes DLE ETX
Packet Structure
 Oscillator Offset
Table A-16 Command Packet 1D Clear Oscillator Offset
Table A-17 Command Packet 1D Set Oscillator Offset
Packet Descriptions
 0x1F Command Packet 1F
Initiate Cold or Factory Reset
Table A-18 Command Packet 1E
0x1E Command Packet 1E
 Almanac Request
Initial Position XYZ Cartesian Ecef Command
Table A-19 Command Packet
0x20 0x21 0x23
 Health Request
GPS Receiver Position Fix Mode Request
Initiate Soft Reset / Self Test Command
0x24 0x25
 GPS System Message Request
Signal Levels Request
Altitude for 2-D Mode Command
0x27 0x28 0x29 0x2A
 Trimble Standard Interface Protocol
 Oscillator Offset Request
Initial Position Latitude, Longitude, Altitude Command
Table A-20 Command Packet 2B
0x2B 0x2D
 0x2E 0x2F 0x31
GPS Time Command
Accurate Initial Position XYZ Cartesian Ecef Command
Table A-21 Command Packet 2E
 Trimble Standard Interface Protocol
 0x32 0x34
Satellite Number For One-Satellite Mode Command
 0x35 Command Packet
Option Flags Command
 Table A-22 Command Packet
 Byte
Bytes
 Trimble Standard Interface Protocol
 Byte
 Last Position and Velocity Request
0x37 0x38
Download and UpLoad Satellite System Data
 Byte Type Value Meaning
Table A-23 Command Packet
 Table A-24 Command Packet
Satellite Attribute Database Command
0x39 Command Packet
 Satellite Ephemeris Status Request
Table A-25 Command Packet 3A
Table A-26 Command Packet 3B
Last Raw Measurement Request
 0x3C Command Packet 3C
Table A-27 Command Packet 3C
Satellite Tracking Status Request
 Almanac Data Page Report
Timing Port Configuration Command
Eeprom Segment Commands
Table A-28 Command Packet 3F-11
 Report Packet
0x41
GPS Time Report
Table A-30 Report Packet
 Approximate Time Time Source Sign Packet Accuracy
Table A-31 Relationship Between Packet 41 and Packet
Status Code
 Table A-32 Report Packet
Single-Precision Position Fix, XYZ Ecef Report
0x42 Report Packet
 Table A-33 Report Packet
Velocity Fix, XYZ Ecef Report
0x43 Report Packet
 Byte Type
Software Version Information Report
Table A-34 Report Packet
0x45 Report Packet
 Table A-35 Report Packet
Health of Receiver Report
0x46 Report Packet
 Table A-36 Report Packet
Error Code Meaning if bit value = Bit Position
 Table A-37 Report Packet
Signal Levels for all Satellites Report
0x47 0x48
GPS System Message Report
 Table A-39 Report Packet 4A Report Reference Altitude
0x49 0x4A
Almanac Health Page Report
Table A-38 Report Packet
 Latitude
 Table A-41 Report Packet 4B
Machine/Code ID and Additional Status Report
Table A-42 Byte 1 Bit Encoding Status
 0x4C Report Packet 4C
Byte Type, Units Default Value, Velocity
Operating Parameters Report
Table A-43 Report Packet 4C
 GPS Time Change Acknowledgment
0x4D 0x4E
Table A-44 Report Packet 4E
 Byte Value Type
UTC Parameters Report
Table A-45 Report UTC Parameters
0x4F Report Packet 4F
 0x54 Report Packet
Bias and Bias Rate Report
Option Flags Report
Table A-46 Report Packet
 Table A-47 0x56 Velocity Fix, East-North-Up ENU Report
Velocity Fix, East-North-Up ENU Report
0x56 Report Packet
 Byte Type/Units Value
Information About Last Computed Fix Report
Table A-48 Report Packet
0x57 Report Packet
 Table A-49 Report Packet
Satellite System Data/Acknowledge from Receiver
0x58 Report Packet
 Byte Type Meaning
Table A-50 Report Packet 58 Almanac Data Report
 Table A-52 Report Packet 58 Ionosphere Data Report
Table A-51 Report Packet 58 Almanac Health Data Report
 Table A-54 Report Packet 58 Ephemeris Data Report
Table A-53 Report Packet 58 UTC Data Report
 Iode Byte
 Table A-55 Report Packet
Satellite Attributes Database Report
0x59 Report Packet
 Report Packet 5A
0x5A
Raw Measurement Data Report
Table A-56 Report Packet 5A
 Codephase
Signal level
Doppler
 Time of measurement
Satellite Ephemeris Status Report
0x5B Report Packet 5B
 Table A-57 Report Packet 5B
 Byte/Item Type/Units Value/Meaning
Satellite Tracking Status Report
Table A-58 Report Packet 5C
0x5C Report Packet 5C
 Approximate elevation of this satellite
 Report Packet 5F-11
0x5F-11
Eeprom Segment Status Reports
Table A-59 Report Packet 5F-11 Eeprom Segment Status Report
 Byte Bit Type Range Units
0x60 Command Packet
Type 1 Differential GPS Corrections
Table A-60 Report Packet 0x60 Data Formats
 SV PRN
Byte Bit Type Value Definition
 0x61 Command Packet
Table A-62 Command Packet 0x61 Data Formats
Set Differential GPS Corrections
 Table A-63 Report Packet 6D
All-In-View Satellite Selection Report
0x6D Report Packet 6D
 0x7A Command Packet 7A
Table A-64 Command Packet 7A
Set or Request Nmea Interval and Message Mask
 Table A-65 Report Packet
0x7B 0x83
Nmea Message Output
Double-precision XYZ Position Fix And Bias Information
 Table A-66 Report Packet
Double-precision LLA Position Fix and Bias Information
0x84 Report Packet
 Survey State Active Configuration
Set Primary Receiver Configuration
Table A-67 Survey State Configurations
0xBB Command Packet BB
 Dynamics Code
Table A-68 Vaild GPS Configuration Settings
 Signal Level Mask
 Command Packet BB
Table A-69 Pdop Mask and Switch
Byte # Type Value Meaning Default
 Table A-69 Command Packet BB
 0xBC Command Packet BC
Report Receiver Configuration
Set Port Configuration Parameters
Table A-70 Command Packet BC
 0xBC Report Packet BC
Request Port Configuration Parameters
 Tsip Superpackets
Custom OEM Packets
 Command Packet 8E-0B
Request or Configure Super Packet Output
0x8E-0B
 Set New Datum
Table A-71 Command Packet 8E-14
Command Packet 8E-14
0x8E-14
 Request Current Datum Values
Table A-72 Command Packet 8E-14
Command Packet 8E-15
0x8E-15
 0x8E-26
0x8E-20
0x8E-41
 0x8E-45
Revert Segments to Default Settings
Table A-74 Command Packet 0x8E-45
0x8E-42
 0x8E-4A
Set/Request PPS Characteristics
Table A-75 Command Packet 8E-4A
Command Packet 8E-4A
 Automatic Packet Output Mask
Table A-76 Command Packet 8E-4D
Command Packet 8E-4D
0x8E-4D
 Bit # Output Default When Meaning Packets
Table A-77 Command Packet 8E-4D Packets Affected By Bits
 0x8E-4E
Command Packet 8E-4E
Set PPS Output Option
 Set or Request Packet Broadcast Mask
0x8E-4F
0x8E-A5
Set PPS Width
 Trimble Standard Interface Protocol
 Byte Bit Type Default Description
Table A-80 Command Packet 8E-A5
 Set Self-Survey Parameters
Issue Self-Survey Command
0x8E-A6
0x8E-A9
 Table A-82
Command Packet 8E-A9 Data Format segment
Byte Type Value Description
 Request Primary Timing Packet
Table A-83 Command Packet 8E-AB
Command Packet 8E-AB
0x8E-AB
 Request Supplemental Timing Packet
Table A-84 Command Packet 8E-AC
Command Packet 8E-AC
0x8E-AC
 0x8E-AD
Command Packet 8E-AD Acutime 2000 only
 Report Packet 8F-0B
0x8F-0B
Comprehensive Time
Table A-85 Report Packet 8F-0B
 38-41 Oscillator Drift
 Report Packet 8F-14
0x8F-14
Current Datum Values
Table A-86 Report Packet 8F-14
 Report Packet 8F-20
00x8F-20
Last Fix with Extra Information binary fixed point
Table A-87 Report Packet 8F-20
 Bytes Item/Type Meaning 32-47
Table A-88 Report Packet 8F-20
 Report Packet 0x8F-26
0x8F-26
Response to Save Eeprom Segments
Table A-89 Report Packet 0x8F-26
 Report Packet 8F-41
0x8F-41
Manufacturing Parameters
Table A-90 Report Packet 8F-41
 Report Packet 8F-42
0x8F-42
0x8F-45
Table A-91 Report Packet 8F-42
 Command Packet 8E-AD Request 8F-AD
Table A-92 Command Packet 8E-AD
Byte # Type Value Default Meaning
 Report Packet 8F-4A
PPS Characteristics
0x8F-4A
Table A-93 Report Packet 8F-4A
 Table A-95 Report Packet 8F-4D
Bit # Output When Output Meaning Packets
0x8F-4D
Table A-94 Report Packet 8F-4D
 Report Packet 8F-A5
0x8F-4E
0x8F-A5
Report Packet 0x8F-4E
 0x8F-A9
0x8F-A6
0x8F-AB
 116 Acutime 2000 Synchronization Kit User Guide
 UTC Integer
Table A-96 Report Packet 0x8F-AB
 Report Packet 8F-AC
0x8F-AC
 Acutime 2000 Synchronization Kit User Guide 119
 120 Acutime 2000 Synchronization Kit User Guide
 GPS Byte
Table A-97 Report Packet 8F-AC
 Reserved 16-19 Bias
 Report Packet 8F-AD
0x8F-AD
Primary UTC Time
Table A-98 Report Packet 8F-AD
 Flag Value Status Meaning
Table A-99 Tracking Status Flag Definitions
 Leap Second Flag
Table A-100 Leap Second Flag Definitions
Bit # Name Meaning if set to
 Table A-101 Datums
Datums
Index Axis Eccentricity Description
 Acutime 2000 Synchronization Kit User Guide 127
 128 Acutime 2000 Synchronization Kit User Guide
 Acutime 2000 Synchronization Kit User Guide 129
 130 Acutime 2000 Synchronization Kit User Guide
 Acutime 2000 Synchronization Kit User Guide 131
 132 Acutime 2000 Synchronization Kit User Guide
 Acutime 2000 Synchronization Kit User Guide 133
 Sample Tsip Routines
Sending out Tsip command packet 0x1F
 Acutime 2000 Synchronization Kit User Guide 135
 Handling incoming Tsip packet
 Acutime 2000 Synchronization Kit User Guide 137
Page
 Timing Receiver Monitor
 Main screen
 Nmea
 Nmea 0183 Message Format
Table C-1 Nmea 0183 Characteristics
Signal Characteristic Nmea Standard
Nmea 0183 Communication Interface
 Each message contains multiple data fields Dn
 Nmea 0183 Message Options
Setting Message Description
Table C-2 Acutime 2000 Nmea Messages
 Field Description
Nmea 0183 Message Formats
GGA GPS Fix Data
Table C-3 GGA GPS Fix Data Message Parameters
 Field # Description
GLL Geographic Position Latitude/Longitude
 GSA GPS DOP and Active Satellites
 Table C-6 GSV GPS Satellites in View Message Parameters
GSV GPS Satellites in View
 RMC Recommended Minimum Specific GPS/Transit Data
 VTG Track Made Good and Ground Speed
 Table C-9 ZDA Time & Date Message Parameters
ZDA Time & Date
 Nmea Acutime 2000 Synchronization Kit User Guide
 Weight
Acutime 2000 GPS Smart Antenna Specifications
Table D-1 Physical Specifications
Dimensions
 Table D-3 Performance Specifications
Table D-2 Environmental Specifications
 Table D-4 Electrical Specifications
 Table D-5 Serial Protocols
Port Interface Protocols Defaults
 Acutime 2000 Standard Interface Cable Diagram
 Figure D-1 Acutime 2000 Standard Interface Cable
 Figure D-2 NTP Interface Cable
 Specifications and Drawings
 System Log Entries
Diagnostics and Debugging
 Serial Port Acces Report
 Configuration File Not Found
Error Log Entries
 Acutime 2000 Synchronization Kit User Guide
 Acutime Configuration Failure
 COM Port Unavailable
 System Clock Not Set
 Running NTP in Debug Mode
 NTP Startup and Acutime Poll
Debug Mode Not Available
 NTP Diagnostics and Debugging
 Acutime is not Responding
 Table E-1 Troubleshooting Acutime is Not Responding
Running NTP with Event Polling Disabled
Possible Problem Solution
 Fudge 127.127.127.x flag2
 Palisadepoll unit x polling synchronous packet
 Incorrect Port and Bad Data
Table E-2 Troubleshooting Incorrect Port and Bad Data
 Serial Port is Unavailable
 Compiling the NTP Distribution
 NTP Diagnostics and Debugging
 NTP Diagnostics and Debugging
 NTP Diagnostics and Debugging
 Controlling the NTP Service Removing the NTP Service
Windows NT Administration
 Type instsrv remove
 Additional Information
Page
 Theory of Operation
 GPS Satellite Message
 Cold Start
Satellite Acquisition and Time to First Fix
 Warm Start
 Hot Start
Garage Search Strategy
 Selective Availability S/A
Position Accuracy
 Tsip
Coordinate Systems
Nmea
 Re-Acquisition
Performance Characteristics
Update Rate
Dynamic Limits
 Theory of Operation
 Figure F-2
System Architecture
 Figure F-1 Acutime 2000 Block Diagram RS-232 Version
Page
 Glossary
 Ascii
 DCE
 DOP
 Elevation mask
 Gdop
 GPS
 Iode
 Pdop
 ROM
 SEP
 SPS
 Index
 Index-2
 Acutime 2000 Synchronization Kit User Guide Index-3
 Index-4 Acutime 2000 Synchronization Kit User Guide
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