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Hemisphere GPS A222, User Manual

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A222 User Guide 

Appendix B-Technical Specifications 

Page 20 of 20 

 

 

 
Table B-7: Mechanical Specifications (continued) 

Item 

Specification 

Status indicators (LED) 

 

Blinking Red - Power on 

 

Blinking Amber - GNSS position available, including   RTK float and Atlas 

 

Blinking Green - RTK-fixed or Atlas-converged position available 

 

Blinking any color - Receiver   operational 

Power/data connector 

12-pin male (metal) 

Antenna mounting 

1-14 UNS female, 5/8-11 UNC female adapter, and surface mount available 

1 

Depends on multipath environment, number of satellites in view, satellite geometry and ionospheric activity 

2 

Depends also on baseline length 

3 

Requires a subscription for Atlas 

4 

Receive only, does not transmit this format 

 

 

Summary of Contents for A222

Page 1: ...875 0364 0 User Guide A222 Smart Antenna Revision A1 August 01 2017 ...

Page 2: ...rks are the properties of their respective owners Patents Hemisphere GNSS products may be covered by one or more of the following patents U S Patents Australia Patents 6111549 6876920 7400956 8000381 8214111 2002244539 6397147 7142956 7429952 8018376 8217833 2002325645 6469663 7162348 7437230 8085196 8265826 2004320401 6501346 7277792 7460942 8102325 8271194 6539303 7292185 7689354 8138970 8307535...

Page 3: ... Mounting and Connectors 5 LED Display 6 Mounting A222 6 Selecting the Proper Antenna Location 6 Routing and Securing the Cables 6 Mounting Options 6 Surface Mount 7 Pole Mount 9 Powering A222 10 Power Considerations 10 Connecting to a Power Source 10 Power Data Connector 10 Chapter 3 Using A222 12 Using A222 13 GNSS Operation 13 Automatic Tracking 13 Receiver Performance 13 Differential Operation...

Page 4: ...iii Auto Seed 14 Appendix A Troubleshooting 15 Appendix B Technical Specifications 17 ...

Page 5: ...A222 User Guide Chapter 1 Introduction Page 1 of 20 Chapter 1 Introduction Overview Key Features Parts List Product Support ...

Page 6: ...Throughout the rest of this manual A222 Smart Antenna is referred to simply as A222 Figure 1 1 A222 Smart Antenna A222 is a versatile smart antenna with several first class features Utilizes Hemisphere s Athena GNSS engine Atlas support over L Band corrections Environment proven enclosure for the most aggressive user scenarios Athena RTK has the following benefits Improved Initialization time Perf...

Page 7: ...cation with external devices requires NMEA certification Wide operating voltage range of 8 32 VDC providing high transient protection for any power source Integrated 2D tilt sensor enables offset corrections A222 supports a variety of protocols for communicating with navigation systems CAN systems and other devices Parts List Table 1 1 provides the part name and description quantity and part numbe...

Page 8: ...A222 User Guide Chapter 2 Installation Page 4 of 20 Chapter 2 Installation Display Mounting and Connectors LED Display Mounting A222 Powering A222 ...

Page 9: ...each port connection Figure 2 1 A222 Table 2 1 A222 Ports and Connections Port Connection Description Mounting holes Four off set mounting holes Two adapters are available the first includes a marine 1 standard adaptable to 5 8 The second allows for flush mounting the unit Power data port 12 pin External power data cable allows you to supply power to A222 as well as communicate with external devic...

Page 10: ...based on measurements from each satellite to the internal GNSS receiver Mount the antenna on or as close as possible to the center of your point of measurement For example ideal antenna placement on a vehicle is the center of the cab roof assuming there is a clear view of the sky Position the antenna as high as possible Routing and Securing the Cables Consider the following when routing cables Pow...

Page 11: ...A222 User Guide Chapter 2 Installation Page 7 of 20 Surface Mount You can surface mount A222 with four machine screws no 8 32 Figure 2 2 A222 Top Bottom ...

Page 12: ...hole centers align with the true hole centers adjusting as necessary 5 Use a center punch to mark the hole centers 6 Drill the mounting holes with a 5mm bit appropriate for the surface 7 Use four machine screws no 8 32 to attach A222 to the surface mount adapter before securing the complete unit to the intended area 8 Place A222 surface mount over the mounting holes and insert the mounting screws ...

Page 13: ... of A222 is 1 14 UNS The mounting assembly included with A222 includes a 5 8 11 UNC adapter Simply thread the riser pole into the antenna until snug Figure 2 4 Pole Mount Hand tighten only screws 10 12 in lbs pole 35 40 in lbs Damage resulting from over tightening is not covered by the warranty ...

Page 14: ...ither DB9 or unterminated requires field stripping and tinning To power A222 Connect A222 to a 12 VDC source Note Selecting the right power connector will depend on your specific installation requirements Do not apply a voltage higher than 32 VDC This will damage the receiver and void the warranty A222 features reverse polarity protection to prevent excessive damage if the power leads are accident...

Page 15: ...ort B Tx Brown 3 Port B Rx Blue 4 CAN high Orange 5 Signal ground Yellow 6 Port A Tx Violet 7 1 PPS Gray 8 Port A Rx Pink 9 CAN low Tan 10 Power in 12 V Red 11 Power ground Black 12 Speed out Green Note For successful communication the baud rate of the A222 serial ports Port A and Port B must be set to match that of the connected devices ...

Page 16: ...A222 User Guide Chapter 3 Using A222 Page 12 of 20 Chapter 3 Using A222 GNSS Operation Differential Operation Default Parameters Configuring the A222 ...

Page 17: ...ance are 1 satellite acquisition and 2 positioning and heading calculation When the A222 is properly positioned the satellites transmit coded information to the antenna on a specific frequency This allows the receiver to calculate a range to each satellite GNSS is essentially a timing system The ranges are calculated by timing how long it takes for the signal to reach the GNSS antenna The GNSS rec...

Page 18: ...tput on the dual serial ports and the update rate of each message Note Use the JSAVE command to save changes you make to the A222 s configuration for the changes to be present in subsequent power cycles For information on Hemisphere GNSS commands refer to the Hemisphere GNSS Technical Reference Auto Seed Auto Seed allows the end user to shut down their device in a static position for any extended ...

Page 19: ...A222 User Guide Appendix A Troubleshooting Page 15 of 20 Appendix A Troubleshooting ...

Page 20: ...al Verify it is locked to 4 or more GNSS satellites Random binary data from A222 Verify the RTCM or the BIN messages are not being accidentally output Verify the baud rate settings match Potentially the volume of data requested to be output could be higher than the current baud rate supports Try either using a higher baud rate for communications or decreasing the number of messages and or baud rat...

Page 21: ...A222 User Guide Appendix B Technical Specifications Page 17 of 20 Appendix B Technical Specifications ...

Page 22: ...tion Pitch roll accuracy 1º using tilt sensor Timing 1PPS accuracy 20 ns Cold start 60 s typical no almanac or RTC Warm start 30 s typical almanac and RTC Hot start 10 s typical almanac RTC and position Maximum speed 1 850 kph 999 kts Maximum altitude 18 288 m 60 000 ft Table B 2 Horizontal Accuracy Item Specification RMS 67 2DRMS 95 RTK1 2 8 mm 1 ppm 15 mm 2 ppm L band1 3 0 04 m 0 08 m SBAS WAAS ...

Page 23: ... reverse polarity operation Power consumption 3 2 W nominal GNSS L1 L2 GLONASS L1 L2 and L band Current consumption 0 26 A nominal GNSS L1 L2 GLONASS L1 L2 and L band Power isolation No Reverse polarity protection Yes Antenna voltage Internal antenna Table B 6 Environmental Specifications Item Specification Operating temperature 40 C to 70 C 40 F to 158 F Storage temperature 40 C to 85 C 40 F to 1...

Page 24: ...nking Green RTK fixed or Atlas converged position available Blinking any color Receiver operational Power data connector 12 pin male metal Antenna mounting 1 14 UNS female 5 8 11 UNC female adapter and surface mount available 1 Depends on multipath environment number of satellites in view satellite geometry and ionospheric activity 2 Depends also on baseline length 3 Requires a subscription for At...

Page 25: ... warrants for 90 days from performanceordelivery orforthebalanceof the original Warranty Period whichever is greater that the Update under normal use and maintenance will conform in all material respects to the documentation provided with the Update and any media will be free of defects in materials and workmanship Notwithstanding the foregoing Hemisphere does not warrant that the Software will me...

Page 26: ...me without cause Hemisphere may terminate this Agreement on 30 days notice to Licensee if Licensee fails to materially comply with each provision of this Agreement unless such default is cured within the 30 days Any such termination by a party shall be in addition to and without prejudice to such rights and remedies as may be available including injunction and other equitable remedies Upon receipt...

Page 27: ...rmance or accuracy of any Product HEMISPHERE IS NOT RESPONSIBLE FOR PURCHASER S NEGLIGENCE OR UNAUTHORIZED USES OF THE PRODUCT IN NO EVENT SHALL Hemisphere GNSS BE IN ANY WAY RESPONSIBLE FOR ANY DAMAGES RESULTING FROM PURCHASER S OWN NEGLIGENCE OR FROM OPERATION OF THE PRODUCT IN ANY WAY OTHER THAN AS SPECIFIED IN Hemisphere GNSS s RELEVANT USER S MANUAL AND SPECIFICATIONS Hemisphere GNSS is NOT R...

Page 28: ...Hemisphere GNSS Inc 8515 East Anderson Drive Suite A Scottsdale Arizona US 85255 Phone 480 348 6380 Fax 480 270 5070 precision hgnss com www hgnss com ...

Page 29: ......

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