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Chapter 5 Handling the CU-200 (Option)
145
[ 2 ] Interface Cable Connection
CU-201
As illustrated below, connect the CU-201 (on which the BHT is put) to a host PC with a cross-mode cable.
To connect it to a modem, use a straight-mode cable.
Cable Connection between CU-201 and Host PC
Cable Connection between CU-201 and Modem
DTE and DCE
In the RS-232C interface specifications, the DTEs (Data Terminal Endpoint) shall be generally
connected with each other by a cross-mode cable; the DTE and DCE (Data Circuit Endpoint) shall be
connected with each other by a straight-mode cable.
The DTE is one piece of equipment connected at both ends of a communications line as a sender or
receiver of data (such as CU-201 on which the BHT is put and a host PC).
The DCE is one piece of equipment connected in-between the DTE and the communications line and
terminates communications lines. It converts their signals without any change in contents (such as
modem or TA).
CU-221
Use a cable that conforms to the USB specification.
CU-201
(DTE)
CU-201
(DTE)
Host PC
(DTE)