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3/23/2006  
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5.1.10  In Range (pin 20) 
The IN_RANGE pin at the connector will be driven logic Low when a Client is in range of a Server on 
the same RF Channel and System ID.  If a Client cannot hear a Server for 5 seconds, it will drive the 
IN_RANGE pin logic High and enter a search mode looking for a Server.  As soon as it detects a 
Server, the IN_RANGE pin will be driven logic Low.  A Server Host can determine which Clients are in 
range by the Server’s Host software polling a Client’s Host.