Trimble Outdoors 58052-00 Benutzerhandbuch

5      APPLICATION CIRCUITS

6 2      Copernicus GPS Receiver

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Figure 5.1 Passive Antenna - Minimum Connections

The minimum connection set for the Copernicus GPS Receiver is illustrated in 

. Following is a description of the schematic.

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A passive antenna is used. The Copernicus GPS Receiver has an on-board 
LNA and an Automatic Gain Control circuit.

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The Pin LNA_XEN is not necessary and not connected.

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No Antenna open and short detection or protection is provided.

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If the Open (Pin 7) and Short (Pin 8) are kept unconnected (floating), the 
Copernicus GPS Receiver reports an open antenna condition. If a normal 
condition report is desired, tie Open low and Short high. (See 

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There is no HW reset ability through the pin XRESET, since XRESET pin is 
tied High to VCC.

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There is no HW initiated Standby Mode through the Pin XSTANDBY, since 
XSTANDBY pin is tied High to VCC. The software serial command to 
Standby Mode will still apply.

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There is no separate power for STANDBY power.

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One serial port is utilized.