Product specifications

4
T ABLE OF C ONTENTS
Chapter 1: Quick Start .................................................................................. 7
Receiving Your Shipment ............................................................................ 7
Unpacking Your Crescent Vector................................................................... 7
Configuring the Crescent Vector Module ........................................................ 7
NMEA 0183 Message Interface..................................................................... 7
Binary Message Interface............................................................................ 8
PocketMAX PC........................................................................................... 8
Default Parameters .................................................................................... 8
Chapter 2: Introduction................................................................................10
Overview ................................................................................................10
GPS .......................................................................................................10
Satellite Tracking...................................................................................10
Heading Accuracy..................................................................................10
Positioning Accuracy...............................................................................11
Update Rates........................................................................................11
SBAS .....................................................................................................11
Automatic Tracking................................................................................11
SBAS Performance.................................................................................12
COAST™ Technology.................................................................................12
Local Differential Option ............................................................................13
Start-up...............................................................................................13
Local Differential Performance..................................................................13
Post Processing........................................................................................13
Evaluating Crescent Vector Performance.......................................................14
Chapter 3: Crescent Vector Module ................................................................16
Understanding the Crescent Vector OEM.......................................................16
Crescent Specifications..............................................................................16
Technical Drawing ....................................................................................18
Connectors..............................................................................................19
Crescent Vector Mounting ..........................................................................19
Crescent Vector OEM Pin Out......................................................................20
Signals ...................................................................................................21
RF Input ..............................................................................................21
Communication Ports .............................................................................21
Communication Port D............................................................................21
LED Indicators ......................................................................................22
1 PPS Timing Signal ...............................................................................22
Event Marker Input ................................................................................22
Grounds...............................................................................................23
Misc. Pins.............................................................................................23
Shielding ................................................................................................23
Chapter 4: Crescent Vector Operation.............................................................24
Powering the Crescent Vector System..........................................................24
Installation Overview ................................................................................24
Communicating with the Crescent Vector Module ...........................................26
NMEA 0183 Interface .............................................................................26
Binary Interface....................................................................................27
RTCM SC-104 Protocol............................................................................27
Configuring the Crescent Vector..................................................................28
Firmware ................................................................................................28