Hemisphere GPS A222, Руководство пользователя

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A222 User Guide Chapter 2-Installation Page 6 of 20
LED Display
A222 uses a single LED (see Figure 2-1) that provides system information based on the color of the LED as follows:
• 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
If at any time the LED turns to a solid color for an extended period, the receiver has malfunctioned.
Mounting A222
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 GNSS engine computes a position 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:
• Power/data cable must reach an appropriate power source
• Power/data cable may connect to a data storage device, computer, or other device that accepts GNSS data
• Do not run cables in areas of excessive heat
• Do not expose cables to corrosive chemicals
• Do not crimp or excessively bend cables
• Do not place tension on cables
• Coil up excess cable in the cab of the vehicle or near the antenna
• Secure along the cable route using plastic tie wraps as necessary
• Do not run cables near high voltage or strong RF noise and transmitter sources
Improperly installed cables near machinery may cause injury or death.
Mounting Options
A222 allows for the following mounting options:
• Surface-mount
• Pole-mount