BT/SN/RAM 6000 Series
Hardware Guide
1-20
Product Overview
Revised 2015-07-16
Data Interface Specifications: Serial, Ethernet & USB
Connecting the modem to a DCE:
In order to connect a modem to another DCE device, a null modem cable configuration is required. If flow control
is not necessary i.e. no handshaking is required, the only pins to be used are TX, RX and GND. TX and RX have to
be crossed between the modem (DCE) and the other DCE device. GND is connected to GND. Disable flow control
on the modem and be sure that the attached device does not check for any of the handshaking signals. Below is
an example diagram.
In the event that full handshaking is required, all handshaking signals should be cross-connected, i.e. RTS/CTS
have to be crossed and DTR/DSR have to be crossed. In addition, TX and RX signals have to be crossed. Below is an
example diagram.
For further serial wiring information, refer to
Chapter 2
in this manual.
