3-20 Chapter 3

DCP386i/486e Daughterboard Cabling

This section discusses cable connections between the 8-port daughterboard on the DCP386i and DCP486e adapters and external devices.

RS-232 Cabling

The serial ports on the 8-port daughterboard are connected to external devices via an 8-port breakout cable. Each port provides a standard 25-pin male RS-232C connector for attachment to external devices.

To connect the port to a modem or other DCE device, use a standard straight- through cable as shown in Figure 3-10.

If you are connecting the port to a DTE device, such as a terminal or another computer, you must use the null-modem cable shown in Figure 3-11.

If your device and application software do not require any modem or clock signals (async only) the three-wire cable shown in Figure 3-15 may be used.

NOTE: All connections to the board should be made using

shielded cables to reduce radio frequency interference.

Contact Emulex Sales Support for further information regarding price and model number of any support cables.

IMPORTANT: In order to provide proper strain relief it is recommended that the breakout cable not be freely suspended from the PC chassis. If this is necessary, the breakout cable should be secured to a chassis or rack. This will help prevent the loss of electrical connection between the adapter and the cable.

Page 53
Image 53
Emulex DCP_link manual DCP386i/486e Daughterboard Cabling, RS-232 Cabling