Hemisphere GPS A222, Руководство пользователя

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A222 User Guide Chapter 2-Installation Page 10 of 20
Powering A222
Power Considerations
A222 accepts an input voltage of 8-32 VDC. For best performance use a clean and continuous power supply. When
applying 12 VDC, A222 will draw approximately 3.2W.
Connecting to a Power Source
A222 uses a single cable for power and data input/output.
Note: A power/data cable is not supplied with A222, but is available as an accessory item. See Table 1-1 for a list of
accessory items.
Note: The following information refers to using the accessory item cables available from Hemisphere GNSS.
The antenna end of the cable is terminated with an environmentally-sealed 12-pin connector and the opposite end is
either 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 accidentally reversed.
With the application of power, A222 automatically proceeds through an internal startup sequence; however, it is ready
to communicate immediately.
Power/Data Connector
Figure 2-5 shows the 12-pin power/data connector pinout assignments and Table 2-2 provides the pinout
specifications.
Note: The Wire Color column in Table 2-2 refers to the color of the wires at the unterminated end of accessory item
051-0169-000 (4.6 m unterminated power/data cable).
Figure 2-5: Power Assignments