Interface Cable - Denso BHT-1260BWB-CE User Manual

BHT-1200 Series
9.6.4

Interface Cable

Ethernet: Use a TIA/EIA Category 5 cable or higher.
USB: Use a USB compliant cable.
RS-232C: As shown in the figure below, connect the CU-1233 to the host computer with
a crossover cable, and to the modem with a straight cable.
DTE and DCE
The RS-232C specification defines that a crossover cable is used for connecting two DTE devices (Data
Terminal Equipment), and a straight cable is used for connecting a DTE device to a DCE device (Data Circuit
Endpoint) .
The DTE is a device connected at both ends of a communication line as a sender or receiver. This refers to
devices such as the BHT placed on the CU-1233 and the host computer.
The DCE is a device connected between the DTE device and a transmission circuit such as a communication
line. The DCE device interconverts the signals without any change in content and terminates the connection.
This refers to devices such as modems and TAs (Terminal Adapter).
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CU-1133
(DTE)
Cable connection between CU-1233 and host computer
CU-1233
(DTE)
Cable connection between CU-1233 and modem
Host computer
Modem