
0049-3400-xxx HIDEX HXIIxxTy – USER’S GUIDE 08/18/2010
Rev. C
Page 5
of
15
Power Connections
There are two optional methods of supplying power to the modem. Use the power connector or
via the RS232 cable. A slide switch on the side of the case selects which is used.
Included with each modem is the mating connector for the input power. Connect the external 5
VDC power source to the supplied connector with attention to the +/- polarity of the voltage
source. CAUTION: NOTE THE POLARITY ON THE CONNECTOR LABEL.
There is a power input select switch on the side of the modem nearest the power connector. The
switch is flush or recessed and to select the power connector input, slide the switch away from
the rear panel.
Pin 10 plus 5VDC and pin 7 ground
Alternate power can be connected via the DB25 connector pin # 10 for +5VDC and pin # 1 or 7
for ground. To enable this option, move the switch toward the power connector.
+5V Power Input
Select Switch