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18

1: Installation

Environmental Considerations

The Crescent A100 is designed to withstand various outdoor
environments. However, there are specific environmental limits that
you should meet when storing and using the Crescent A100. See Table
B-4: Environmental specifications in Appendix B.

875-0163-000 (Crescent A100).book Page 18 Tuesday, November 13, 2007 11:29 AM

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Содержание Crescent A100

Страница 1: ...Crescent A100 User Guide Part No 875 0163 000 Rev C1 ...

Страница 2: ...y form or by any means electronic mechanical magnetic optical chemical manual or otherwise without the prior written permission of Hemisphere GPS Inc TRADEMARKS Hemisphere GPS and the Hemisphere GPS logo Satloc and the Satloc logo Mapstar Air Star Outback Guidance and eDrive are trademarks of Hemisphere GPS Other trademarks are the properties of their respective owners NOTICE TO CUSTOMERS Contact ...

Страница 3: ...875 0163 000 Crescent A100 book Page 2 Tuesday November 13 2007 11 29 AM ...

Страница 4: ...tely of any claimed defect Repairs shall be made through a Hemisphere GPS approved service center only Exclusions Hemisphere GPS does not warrant damage occurring in transit or due to misuse abuse improper installation neglect lightning or other electrical discharge or fresh salt water immersion of Products Repair modification or service of Hemisphere GPS products by any party other than a Hemisph...

Страница 5: ...ITY OF SUCH DAMAGES WITHOUT LIMITING THE FOREGOING HEMISPHERE GPS SHALL NOT BE LIABLE FOR ANY DAMAGES OF ANY KIND RESULTING FROM INSTALLATION USE QUALITY PERFORMANCE OR ACCURACY OF ANY PRODUCTS Governing Legislation To the greatest extent possible this warranty shall be governed by the laws of the State of Arizona In the event that any provision hereof is held to be invalid by a court of competent...

Страница 6: ...ed Pulse Output 3 CAN 4 Installation 5 Cable Interface 6 Extension Power Data Cable 7 Crescent A100 Placement 7 Mounting the Crescent A100 10 Powering the Crescent A100 13 Connecting the Crescent A100 to External Devices 15 Environmental Considerations 18 875 0163 000 Crescent A100 book Page i Tuesday November 13 2007 11 29 AM ...

Страница 7: ...S Overview 20 GPS Operation 20 Differential Operation 21 Appendix 25 A Troubleshooting 26 B Specifications 28 D Crescent A100 Accessories 32 E Surface Mount Template 35 875 0163 000 Crescent A100 book Page ii Tuesday November 13 2007 11 29 AM ...

Страница 8: ...nstallation Features Installation Mounting the Crescent A100 Powering the Crescent A100 Connecting Crescent A100 to External Devices 875 0163 000 Crescent A100 book Page 1 Tuesday November 13 2007 11 29 AM ...

Страница 9: ...and EGNOS signals The Crescent A100 provides sub meter performance with50 centimeter accuracy 95 of the time This chapter provides information on the following Features Installation Mounting the Crescent A100 Powering the Crescent A100 Connecting the Crescent A100 to external devices 875 0163 000 Crescent A100 book Page 2 Tuesday November 13 2007 11 29 AM ...

Страница 10: ...erface protocol RTCM SC 104 and upgrading firmware See the general GPS technical reference at www hemispheregps com for more detailed information LED The Crescent A100 uses one tri colored LED Red indicates the power is on Amber indicates a GPS lock Flashing green indicates DGPS is being acquired Green indicates a DGPS solution Radar Simulated Pulse Output The radar simulated pulse output provides...

Страница 11: ... Crescent A100 supports a selection of NMEA 2000 messages that can be broadcast on a CAN bus Table 1 1 provides a listing of the NMEA 2000 commands that are used Note Pin 12 does not have any form of isolation or surge protection You are STRONGLY encouraged to incorporate some form of isolation circuitry into your supporting hardware if you wish to utilize the Speed Radar Pulse output Table 3 1 NM...

Страница 12: ... of using Hemisphere GPS e Dif and L Dif technology Figure 1 1 provides a front view of the deutsche connector receptacle s numbering Figure 3 1 Deutsche connector receptacle numbering Table 1 2 provides the Deutsche connector s pin outs Table 3 2 Deutsche connector s pin outs Pin Out Function 1 Manual mark in 2 TxB 3 RxB 4 CAN high 5 10 8 12 7 6 9 1 2 11 3 4 875 0163 000 Crescent A100 book Page 5...

Страница 13: ...ension cable is damaged in the field it can be replaced without returning the complete Crescent A100 system Other power cables are available as accessories to fit a wide variety of applications See Appendix E for a list of Crescent A100 accessories 5 Signal Ground 6 TxA 7 One PPS 8 RxA 9 CAN low 10 Power in 12 V 11 Power ground 12 Speed out Table 3 2 Deutsche connector s pin outs Pin Out Function ...

Страница 14: ...s Do not run the extension cable through door or window jams Keep the cables away from rotating machinery Do not bend excessively or crimp the cables Avoid placing tension on the cables Remove unwanted slack from the extension cable at the receiver end Secure along the cable route using plastic wraps Crescent A100 Placement Placement of the Crescent A100 is crucial to the system s operation The GP...

Страница 15: ...are not masked by obstructions which can potentially reduce system performance To place the Crescent A100 1 Mount the Crescent A100 on or as close to the center of your point of measurement 2 Position the Crescent A100 as high as possible Figure 1 2 on page 9 shows the ideal location to place the Crescent A100 on a vehicle 875 0163 000 Crescent A100 book Page 8 Tuesday November 13 2007 11 29 AM ...

Страница 16: ...Crescent A100 User Guide 9 Figure 1 2 Crescent A100 placement on a vehicle 875 0163 000 Crescent A100 book Page 9 Tuesday November 13 2007 11 29 AM ...

Страница 17: ...bond the metal disc to the desired mounting location if there are no metal surfaces To use the metal disc and foam adhesive 1 Clean and dry the mounting surface on the vehicle 2 Remove the backing from one side of the foam adhesive and press the metal plate onto the mounting surface on the vehicle 3 Remove the backing from the other side of the foam adhesive 4 Press the metal plate onto the mounti...

Страница 18: ...A100 1 Photocopy or remove Appendix E and use its line drawing as a template to plan the mounting hole locations 2 Mark the mounting hole centers as necessary on the mounting surface 3 Place the Crescent A100 antenna over the marks to ensure that the planned hole centers agree with the true hole centers then adjust 4 Use a center punch on the hole centers in order to guide the drill bit 5 Drill th...

Страница 19: ...e and into the antenna Pole Mount The center thread of the Crescent A100 is 5 8 inches for compatibility with a survey pole not included Warning Install the Crescent A100 only hand tight Damage resulting from overtightening the Crescent A100 is not covered by warranty 875 0163 000 Crescent A100 book Page 12 Tuesday November 13 2007 11 29 AM ...

Страница 20: ...d be continuous and clean Refer to Table B 1 Power specifications in the Appendix for power requirements The Crescent A100 features reverse polarity protection to prevent excessive damage if the power leads are accidentally reversed With the application of power the Crescent A100 will automatically proceed through an internal start up sequence however it will be ready to communicate immediately No...

Страница 21: ...e you are in the world Note The Crescent A100 can take up to five minutes for a full ionoshperic map to be received from SBAS Optimum accuracy will be obtained once the Crescent A100 is processing corrected positions using complete ionospheric information 875 0163 000 Crescent A100 book Page 14 Tuesday November 13 2007 11 29 AM ...

Страница 22: ...ering for the extension cable s DB 9 socket connector female The associated numbering for the plug connector male is a mirror reflection of the scheme shown in figure 1 4 Figure 1 4 DB 9 socket numbering Table 1 3 on page 16 provides the pin configuration for communication through the serial ports Note For successful communication the baud rate of the Crescent A100 serial ports must be set to matc...

Страница 23: ...ound Table 3 4 DGPS Application 1 SBAS WAAS EGNOS etc Application 2 e Dif unsubscribed Table 3 5 Serial port settings Serial port Baud Rate Data bits Parity Stop bit Interface level Serial port A and B 4800 9600 19200 57600 8 None 1 RS 232C Table 3 6 GPS message output options GPS message Update rate Max DGPS age Elevation mask Hemisphere GPS Binary NMEA 0183 NMEA 2000 CAN From 1 Hz to 20 Hz 259 2...

Страница 24: ...2000 commands NMEA 2000 message Updates rates GNNSPositionData 1 Hz GNNSPositionRapidUpdate 20 Hz with updates based on the subscribed rate i e every other message will be a copy of the previous on a 10 Hz receiever NMEACogSogData 20 Hz with updates based on the subscribed rates i e every other messages will be a copy of the previous on a 10 Hz receiver Note The changes you make to the Crescent A1...

Страница 25: ... withstand various outdoor environments However there are specific environmental limits that you should meet when storing and using the Crescent A100 See Table B 4 Environmental specifications in Appendix B 875 0163 000 Crescent A100 book Page 18 Tuesday November 13 2007 11 29 AM ...

Страница 26: ...2 GPS Overview GPS Operation Differential Operation 875 0163 000 Crescent A100 book Page 19 Tuesday November 13 2007 11 29 AM ...

Страница 27: ...general operation of the Crescent A100 s internal GPS engine Automatic Tracking The GPS engine within the Crescent A100 automatically searches for GPS satellites acquires the signals and manages the navigation information required for positioning and tracking This is a hands free mode of operation Receiver Performance The Crescent A100 works by finding four or more GPS satellites in the visible sk...

Страница 28: ...to calculate the geographic location Reception of any four or more of these signals allows a GPS receiver to compute 3 dimensional coordinates Differential Operation The Radio Technical Commission of Marine services RTCM has a differential service intended for correction services This includes the Space Based Augmentation Systems SBAS such as the Wide Area Augmentation System WAAS and the European...

Страница 29: ...us on other aspects of differential operation without the need to tune the receiver The Crescent A100 features two channel SBAS tracking that provides an enhanced ability to maintain a lock on a SBAS satellite when more than one satellite is in view This redundant tracking approach results in more consistent tracking of a SBAS signal when in an area where signal blockage of a satellite is possible...

Страница 30: ...computes a differential correction The user can operate for unlimited time and provide good relative accuracy Alternatively the operator can regularly update e Dif to maintain absolute accuracy typically less than 1 meter over 40 minutes 875 0163 000 Crescent A100 book Page 23 Tuesday November 13 2007 11 29 AM ...

Страница 31: ...24 2 GPS Overview 875 0163 000 Crescent A100 book Page 24 Tuesday November 13 2007 11 29 AM ...

Страница 32: ...Appendix Troubleshooting Crescent A100 Specifications Network Crescent A100 accessories Surface mount template 875 0163 000 Crescent A100 book Page 25 Tuesday November 13 2007 11 29 AM ...

Страница 33: ...estrictions imposed by power source maximum is 250 mA No data from Crescent A100 Check receiver power status LED Check integrity and connectivity of power and data cable connections The volume of data requested to be output by the Crescent A100 could be higher than what the current baud rate supports Try using 19 200 or higher as the baud rate for all devices No GPS lock Check integrity of cable c...

Страница 34: ... Check integrity of cable connections Verify Crescent A100 s unobstructed view of the sky Check SBAS visibility map Table A 1 Troubleshooting Problem Possible solution 875 0163 000 Crescent A100 book Page 27 Tuesday November 13 2007 11 29 AM ...

Страница 35: ...t voltage 7 36 VDC Power consumption 2 W 12 VDC typical Current Consumption 150 mA 12 VDC typical Power connector Cable mount environmentally sealed Table B 2 Mechanical specifications Item Specification Height 54 7 mm 2 2in Width 129 5 mm 5 1 in Weight 0 66 kg 1 45 lbs Mounting Options Magnetic mount Fixed mount low or high pole 875 0163 000 Crescent A100 book Page 28 Tuesday November 13 2007 11 ...

Страница 36: ...col NMEA 0183 SLX binary and NMEA 2000 Ground speed output Range 0 8 322 Km h 0 5 200 mph Signal Opto isolated pulse out Frequency Conversion 94 Hz m s 28 65 pulse per foot traveled Event mark output HCMOS active low falling edge sync 10 k ohm 10 pF load Table B 4 Environmental specifications Item Specification Operating temperature 30 C to 70 C 22 F to 158 F Storage temperature 40 C to 85 C 40 F ...

Страница 37: ...logy during differential signal outage Channels 12 channel parallel tracking 10 channel when tracking SBAS Update rate 1 20 Hz positions Horizontal accuracy 0 6 m 95 confidence DGPS 2 5 m 95 confidence autonomous Differential Options SBAS e Dif L Dif SBAS Tracking 2 channel parallel tracking Start up time 60 s no almanac and RTC Satellite Reaquisition 1 s Table B 4 Environmental specifications Ite...

Страница 38: ...atellites in view satellite geometry baseline length for local services and ionspheric activity Depends on multipath environment number of satellites in view satellite geometry and ionspheric activity 875 0163 000 Crescent A100 book Page 31 Tuesday November 13 2007 11 29 AM ...

Страница 39: ...ation 875 0163 Crescent A100 owner s manual 875 0066 Warranty Table D 3 Crescent A100 cable accessories Part Number Cables 051 0129 Cable Crescent A100 power single port DB9 3 m 10 ft 051 0130 Cable Crescent A100 power dual port DB 9 3 m 10 ft 051 0132 Cable Guidance console port single port DB9 5 m 15 ft 051 0133 Cable adaptor converts 051 0132 guidance console port to a speed port 875 0163 000 C...

Страница 40: ...rette lighter adapter extension 91 m 3 ft 054 0037 Cable power to AC adapter 1 83 m 6 ft 054 0038 Cable power cable 91 m 3 ft extension Table D 4 710 0052 A Series antenna magnetic mounting kit Part number Mounting accessories 478 0006 000 Black magnet mount 601 0003 005 Zinc disc 675 1022 000 Screw 5 8 Hex 683 0001 007 Tape 683 0001 008 Foam pad Table D 3 Crescent A100 cable accessories Part Numb...

Страница 41: ...34 Appendix This page is intentionally left blank 875 0163 000 Crescent A100 book Page 34 Tuesday November 13 2007 11 29 AM ...

Страница 42: ... E Surface Mount Template The following template should be used to plan for the location of the mounting holes used when surface mounting the Crescent A100 875 0163 000 Crescent A100 book Page 35 Tuesday November 13 2007 11 29 AM ...

Страница 43: ...36 Appendix This page is intentionally left blank 875 0163 000 Crescent A100 book Page 36 Tuesday November 13 2007 11 29 AM ...

Страница 44: ...www hemispheregps com e mail info hemispheregps com ...

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