CRESCENT P102/P103 OEM BOARDS
50Pages

Cresent OEM Board Product Name Integrator Guide Quick Reference Guide

This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation. Copyright Notice Copyright Hemisphere GNSS, Inc. (2013). All rights reserved. No part of this manual may be reproduced, transmitted, transcribed, stored in a retrieval system or translated into any language or computer language, in any form or by any means, electronic, mechanical, magnetic, optical, chemical, manual or...

Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Crescent OEM Board Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 Product Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 What’s Included . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Board Integration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Key Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Message Interface . . . . . . ....

Frequently Asked Questions . . . . . . . . . . . . . . . . 23 Integration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24 Power, Communication, and Configuration . . . . . . . . . . . . . . . . . 25 GPS Reception and Performance . . . . . . . . . . . . . . . . . . . . . . . . . . 26 SBAS Reception and Performance . . . . . . . . . . . . . . . . . . . . . . . . . 27 External Corrections . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28 Antenna Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

Chapter 1: Introduction Crescent OEM Board Options Product Overview What's Included Board Integration Key Features Message Interface Using PocketMax to Communicate with the Crescent Crescent Integrator Guide 1 PN 875-0158-000 Rev D1

This manual does not cover receiver operation, the PocketMax™ utility, or commands and messages (NMEA 0183, NMEA 2000® or HGPS proprietary). For information on these subjects refer to the Hemisphere GPS Technical Reference (go to www.hemispheregps.com and click the GPS Reference icon). Crescent OEM Board Options Table 1-1 lists the current Crescent® OEM board models. Table 1-1: Crescent board models Note: Throughout this manual, the Crescent OEM board is referred to simply as the Crescent. Crescent Integrator Guide 2 PN 875-0158-000 Rev D1

Product Overview With its small form factor, low power consumption, and simple onboard firmware the Crescent is an ideal solution for integrators, offering scalability and expandability from GPS with SBAS to L1 GPS RTK. The Crescent is offered in two common industry form factors: • P100, P102, and P104 offer Hemisphere GPS' standard pinout configuration (34-pin) • P101 and P103 have a mechanical design compatible with popular aftermarket products (20-pin) See "Headers and Pinouts" on page 12 for information on the pinout configurations of each board. The reliable positioning...

Board Integration Successful integration of the Crescent within a system requires electronics expertise that includes: • Power supply design • Serial port level translation • Reasonable radio frequency competency • An understanding of electromagnetic compatibility • Circuit design and layout The Crescent GPS engine is a low-level module intended for custom integration with the following general integration requirements: • Regulated power supply input (3.3 VDC ± 3%), 300 mA continuous • Low-level serial port (3.3 V CMOS) and USB port communications • Radio frequency (RF)...

Message Interface The Crescent uses a NMEA 0183 interface, allowing you to easily make configuration changes by sending text-type commands to the receiver. The Crescent also supports a selection of binary messages. There is a wider array of information available through the binary messages, plus binary messages are inherently more efficient with data. If the application has a requirement for raw measurement data, this information is available only in a binary format. For more information on NMEA 0183 commands and messages as well as binary messages refer to the Hemisphere GPS Technical...

Chapter 2: Board Overview Mechanical Layout Connectors Mounting Options Headers and Pinouts Signals Shielding Receiver Mounting Crescent Integrator Guide 7 PN 875-0158-000 Rev D1

Chapter 2: Board Overview Mechanical Layout Figure 2-1 shows the mechanical layout for the Crescent P100/P102/P104 OEM boards and Figure 2-2 shows the mechanical layout for the Crescent P101/P103 OEM boards. Dimensions are in millimeters (inches) for both layouts. 6.8 mm (.27 in) Note: For older P100 boards this measurement is 5.9 mm (.23 in). Contact Hemisphere GPS Technical Support if you have any questions. Figure 2-1: Crescent P100/P102/P104 mechanical layout Crescent Integrator Guide

Chapter 2: Board Overview Figure 2-2: Crescent P101/P103 mechanical layout Crescent Integrator Guide

Chapter 2: Board Overview Connectors Table 2-1 describes the Crescent's connectors and mating connectors. You can use different compatible connectors; however, the requirements may be different. The antenna input impedance is 50 Q. Table 2-1: Crescent connectors Note: For the Samtec FTSH headers, '-01' indicates 0.120" posts and '-04' indicates 0.150" posts. Crescent Integrator Guide 10 PN 875-0158-000 Rev D1

Chapter 2: Board Overview Mounting Options There are two options for mounting the Crescent: • Direct electrical connection method • Indirect electrical connection (cable) method Direct Electrical Connection Method Place an RF connector, heading connector, and mounting holes on the carrier board and then mount the Crescent on the standoffs and RF and header connectors. This method is very cost effective as it does not use cable assemblies to interface the Crescent. Note: Be aware of the GPS RF signals present on the carrier board and ensure the correct standoff height to avoid any...