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2.3
The XYR 400E module can be powered from a 9 - 30VDC power supply. The power supply
should be rated at 1 Amp. The positive side of the supply must not be connected to earth. The
supply negative is connected to the unit case internally. The DC supply may be a floating supply
or negatively grounded.
The power requirements of the XYR 400E unit is 240mA @
12V or 150mA @ 24VDC. This is
inclusive of radio and Ethernet ports
active, & serial port plugged in.
Transmission current is nominally
350mA at 12V (200mA at 24V)
for the 100mW RF unit, and
500mA at 12V (350mA at 24V) for the
300mW RF unit.
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)
2.4
2.4.1
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 for factory testing. Communication is via
standard RS232 signals. The XYR 400E is configured as DCE equipment with the pinouts
detailed below.
XYR 400E
DB9
MALE
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 XYR 400E does not support XON/XOFF.
Example cable drawings for connection to a DTE host (a PC) or another DCE hosts (or modem) are
detailed above.
Version 1
5/1/08
9 - 30
VDC
DTE HOST
XYR 400E
DB9
FEMALE
XYR400E Ethernet Modem
_
+
Serial Connections
DCE HOST
DB9
DB9
MALE
MALE
Power Supply
B
RS485
A
-
SUPPLY
+
COM
XYR
DIO
400E
16
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