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[ 2 ] Interface Cable Connection
CU-301
As illustrated below, connect the CU-301 (on which the BHT is placed) to a host computer with a
cross-mode cable. To connect it to a modem, use a straight-mode cable.
Cable Connection between CU-301 and Host Computer
Cable Connection between CU-301 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-301 on which the BHT is placed and a host computer).
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-321
Use a cable that conforms to the USB specification.
CU-311
Use a TIA/EIA Category 3 cable or higher one.
CU-301
(DTE)
CU-301
(DTE)
Host computer
(DTE)
Modem
(DCE)