User manual

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Cooper Bussmann 245U-E Wireless Ethernet Modem & Device Server User Manual
Rev Version 2.19
Figure 13 Power Supply
The power requirements of the 245U-E unit are shown in the following table.
245U-E-G 245U-E-A
Voltage 12 Vdc 24 Vdc 12 Vdc 24 Vdc
Quiescent 290 mA 150 mA 300 mA 160 mA
TX @100 mW 310 mA 170 mA 370 mA 190 mA
TX @ 400 mW 340 mA 180 mA 410 mA 210 mA
A ground terminal is provided on the back of the module. This terminal should be connected to the main ground
point of the installation in order to provide efficient surge protection for the module (refer to the installation diagram
in the 245U-E Installation Guide ).
2.3 Serial Connections
RS232 Serial Port
The serial port is a 9-pin DB9 female, and provides for connection to a host device as well as a PC terminal for
configuration, field testing, and factory testing. Communication is via standard RS232 signals. The 245U-E is
configured as DCE equipment with the pinouts described below.
Hardware handshaking using the CTS/RTS lines is provided. The CTS/RTS lines may be used to reflect the status
of the local unit’s input buffer. The 245U-E does not support XON/XOFF. Example cable drawings for connection to
a DTE host (a PC) or another DCE hosts (or modem) are detailed in Figure 14.
Figure 14 Serial Cable