Power System; Internal Power; External Power; Figure 2.9 Power Sources: Internal (Left) And External (Right) - ashtech Z-Xtreme System Manual

plastic. It's designed to withstand harsh environments encountered during normal
field use. The MP2500 operates under the DOS operating system. It's manufactured
by WPI Husky Computers.

Power System

Both the base and rover systems need a source of power to operate. At the rover, the
GPS receiver and radio utilize the same power source. For the base system, the
base GPS receiver and radio may utilize the same power source or separate sources.
In any case, the power requirements at the base system may be much higher than the
rover system depending on the radio being used. If a base radio transmission must
reach a rover system that is more than 5 km away, the transmission power of the base
radio must be high, consuming a great deal more power. Figure 2.9 shows an internal
battery power source and the same battery configured as an external power source.

Figure 2.9 Power Sources: Internal (left) and External (right)

A number of options are available for powering the ZX SuperStation. Each is
described below:

Internal Power

Each Z-Xtreme receiver in the ZX SuperStation includes one internal battery for
power. Each battery will operate the receiver for approximately 11 hours.

External Power

For extended periods of operation, an external power source can be connected to the
Z-Xtreme receiver via a power connector on the back of the receiver. The battery
used for external power is identical to the internal battery. To use it as an external bat-
tery, the internal battery is placed in a special pouch. The pouch includes a cable to
connect the battery to the receiver. With both the internal and external batteries
16 Real-Time Kinematic Surveying