A325
33Pages

Product Name A325 GNSS SmartGuide Quick Reference Antenna User Guide Part No.

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. This product complies with the essential requirements and other relevant provisions of Directive 2014/53/EU. The declaration of conformity may be consulted at https://hemispheregnss.com/About-Us/Quality-Commitment. Copyright Notice Hemisphere GNSS Precision GNSS Applications Copyright © Hemisphere GNSS (2017). All...

Notice to Customers Contact your local dealer for technical assistance. To find the authorized dealer near you: Hemisphere GNSS 4110 9th Street S.E. Calgary, Alberta, Canada T2G 3C4 Phone: 403259-3311 Fax: 403-259-8866 precision@hgnss.com www.hgnss.com Technical Support If you need to contact Hemisphere GNSS Technical Support: Hemisphere GNSS 8515 East Anderson Drive, Suite A Scottsdale, Arizona, US 85255 Phone: 480-348-6380 Fax: 480-270-5070 techsupport@hgnss.com Documentation Feedback Hemisphere GNSS is committed to the quality and continuous improvement of our products and services....

Chapter 1: Introducing the A325 Smart Antenna A325 Overview Key Features Multi-Function Application (MFA) Software Parts List Product Support A325 GNSS Smart Antenna User Guide 1 PN 875-0318-000 Rev D2

Chapter 1: Introducing the A325 Smart Antenna A325 Overview The A325™ Smart Antenna offers an affordable, portable solution with professional level accuracy for agricultural, marine, GIS mapping, and other applications powered by Hemisphere GNSS’ Eclipse™ multifrequency GNSS receiver technology. Note: Throughout the rest of this manual, the A325 Smart Antenna is referred to simply as the A325. Figure 1-1: A325 smart antenna The A325 allows you to focus on the job at hand with fast startup and reacquisition times as well as an easy-to-see LED status indicator for power, GNSS, and Bluetooth....

Chapter 1: Introducing the A325 Smart Antenna Key Features Key features of the A325 include: • Centimeter-level accuracy using Eclipse technology in a rugged, all-in-one enclosure • Improved GNSS performance—particularly with RTK and GLONASS applications—through the implementation of SureTrack technology • Long range RTK baselines of up to 50 km • Very fast RTK fix and reacquisition times • Supports CAN, NMEA 0183, NMEA 2000*, and binary for communication with external devices *requires NMEA certification • Bluetooth' capability for wireless datatransfer • Wide operating voltage range of...

Chapter 1: Introducing the A325 Smart Antenna becomes unusable, the next mode will be selected (for example, L-band DGPS, or Beacon or External RTCM). Finally, if no correction signals are available, the device defaults to Autonomous. You can include or exclude specific sources. For example, you can exclude sources that you do not want your device to use, such as if you want to use only beacon. If you do not exclude the other sources your device may use SBAS instead. Another example is if you want to exclude L-band (when you do not have an L-band subscription) to conserve power. You include...

Chapter 2: Installing the A325 Ports and Connections Communication Mounting the A325 Powering the A325 Connecting to External Devices Default Parameters Configuring the A325 A325 GNSS Smart Antenna User Guide 5 PN 875-0318-000 Rev D2

Ports and Connections All connections and ports are located on the bottom of the unit, as shown in Figure 2-1. Table 2-1 provides additional information about each port/connection. Mounting hole Power/data port Figure 2-1: A325 ports and connectors Table 2-1: A325 ports and connections LED Display The A325 uses a single LED (see Figure 2-1) that provides system information based on the color and pulse of the LED as follows: • Red LED = power on • Amber LED = GPS lock • Green LED = DGPS position • Blinking LED (any color) = Bluetooth connected A325 GNSS Smart Antenna User Guide 6 PN...

Communication The A325 supports radar-simulated pulse output and various NMEA 2000 messages. Radar-Simulated Pulse Output The radar-simulated pulse output provides accurate ground speed. The A325 uses pin 12 for the speed out pin. Pin 12 will output a square wave with a 50% duty cycle and the frequency of the square wave varies directly with speed. 94 Hz represents a speed of 1 m/sec (or 28.65 pulse/foot traveled). Note: Pin 12 does not have any form of isolation or surge protection. Hemisphere GNSS strongly recommends that you incorporate some form of isolation circuitry into your...

Table 2-2: Transmitted NMEA 2000 messages (continued') A325 GNSS Smart Antenna User Guide 8 PN 875-0318-000 Rev D2

Mounting the A325 This section provides information on where to mount your antenna and the different mounting options available. Selecting the Proper Antenna Location Proper antenna placement is critical to positioning accuracy. To select the proper antenna location: • Place the antenna with an unobstructed view of the sky. An obstructed view of the sky may impair system performance. The GPS engine computes a position based on measurements from each satellite to the internal GPS receiver. • Mount the antenna on, or as close as possible to, the center of your point of measurement. For...

Magnetic Mount The magnetic mount can be screwed into the bottom of the A325 and mounts to metal surfaces. A metal disc and foam adhesive are included with each magnetic mount. Use the foam adhesive to bond the metal disc to the desired mounting location if there are no metal surfaces. To mount the A325 using the magnetic mount: 1. Clean and dry the surface where you will attach the metal disc. Remove the backing from one side of the foam adhesive and press the adhesive onto the mounting surface. Remove the backing from the other side of the foam adhesive and press the metal disc onto the...