Care and Feeding of Telex Radio Dispatch Systems
C-6200 Setup
Phase 4 Design, Inc.
Dave Grant / dgrant@hostnw.net
425.402.7308
11/5/2010 Page 8 of 18
Two-Wire/Four-Wire Mode
Each Line Card comes standard with a jumper selectable two or four-wire option. Note: The Line
Cards are shipped in the four-wire mode. Two-wire mode is accomplished by the following jumper
positions:
The RX pairs are now on pins 11 and 22 (line 1), 5 and 16 (line 2) on the connector. The TX pairs
are on pins 10 and 23 (line 1), 4 and 17 (line 2) of the connector. Once transmit and receive paths are
separated, the impedance of each side must be set.
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