Sokkia RADIAN IS, Operation Manual

Page: 30 / 74

24 RADIAN™IS
Chapter 3 Radian IS Components
For more information on the Radian IS port and cable
specifications, refer to the Radian IS Advanced Reference
Materials.
3.3.1 Power Port and Power Input
The Radian IS has one power port for connecting an external
power source to the Radian IS.
The power port enables you to power your Radian IS using an
external power source, such as a large external battery. This is
an alternative to using the Radian IS internal batteries. Refer to
Section 3.2.3, Battery, on Page 20 for more information on the
internal batteries.
The operation of the Radian IS is dependent on a power source
connected to the system (internal or external). If there is no
power source connected, the Radian IS will not work.
For the Radian IS to operate with an external power source, the
minimum operating voltage for the external power input can
not be below the minimum Radian IS operating voltage. Please
see Radian IS Specifications on Page 51, for detailed information
on the Radian IS operating voltage.
Radian IS is designed to be protected against the
reverse-polarity connection of an external supply and against
over-voltage and noise from an external source.
3.3.2 Communications Ports and Power Output
The Radian IS communication ports enable you to
communicate with accessory devices, such as the data collector
or the radio. As well, each communication port provides a
battery output for powering accessory devices.
Typically, the COM1 port of the Radian IS is intended for use
with the data collector and the COM2 port is intended for use
with a radio.