Sokkia GSR2700 IS, Инструкции по эксплуатации, Страница: 55 / 87

44 GSR2700 IS Operations Manual
Chapter 5 Basic Operations
5.3 Powering Peripheral Devices
The GSR2700 IS is capable of providing power to peripheral
devices, through its COM ports. The power output is
approximately the same as the input of the active battery.
NOTE Typically, the COM ports are not sent power. For example, since
most data collectors do not have a power pin, COM1 would not
usually provide power.
If the peripheral devices attached to the GSR2700 IS try to draw
too much power from the battery output, the receiver will limit
the available current to prevent damage to the receiver. Once the
excessive load is removed, normal operation of the system will
resume.
NOTE If a peripheral device (for example, a high-powered radio) was
the cause of the current drain, it will probably not function after
the system resumes normal operation.
If you use the Sokkia recommended data collector and radio, you
will not overload your system. This possibility only exists if you
attach peripherals that have not been approved for use with the
GSR2700 IS.
5.4 Power Consumption
The GSR2700 IS has been designed to minimize its power usage.
Power consumption is less than 5 W using the internal radio.
When the receiver is off, it still draws a small amount of power
from the batteries. If you store your GSR2700 IS for several
months without use, the batteries may become fully discharged.
If this happens, recharge the batteries to resume operation (see
Section 5.6,
Charging the Internal Batteries , page 46).