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REFERENCE MANUAL - FTP Directory Listing - Trimble

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1 STARTER KIT<br />

Antenna<br />

The Copernicus GPS Starter Kit comes with an active mini magnetic mount 3.0 V<br />

GPS antenna. This antenna mates with the MCX connector on the interface unit. The<br />

reference board supplies power to the active antenna through the RF transition cable.<br />

Using a Passive Antenna<br />

To test performance with a passive antenna (not supplied in the Copernicus GPS<br />

Starter Kit) the passive antenna should be connected directly to the MCX connector<br />

on the reference board, to ensure minimal signal loss. Since the passive antenna has<br />

no LNA, the antenna detection and short circuit will not report a true antenna<br />

condition. If the passive antenna is a (DC open) patch antenna, the FW reports an<br />

antenna open condition. If the antenna power jumper is removed, the antenna is<br />

reported as shorted.<br />

14 Copernicus GPS Receiver

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