Technical data
  Command Channel and Control-Display-Unit (CDU) Ports 
Command Channel and Control-
Display-Unit (CDU) Ports 
The Command Channel rear panel port enables any commercially 
available PC (running Windows 95/98/NT/2000/XP and a terminal 
display program) to initialize, customize, and control the unit. In 
addition, the Control-Display-Unit (CDU) port connected to a PC and 
using commercially available software allows the operator to interrogate 
and display the many available parameters for tracking, and timing 
applications. 
It should be noted that it is not always necessary to have a PC 
connected and running the software since the unit will retain all 
settings, output selections, and almanacs in its internal memory. These 
are ready to function at the next switch on, without further operator 
intervention
. 
GPS Timing Receiver Installation and Operation Manual   
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