User's Manual

Exhibit 8
Page 4 of 4 FCC ID: MIJZEPCPE-USB-01
12/30/99
8.3.2 Unit Production Cost
The unit production cost of the Zephyr B band subsystem, which includes the ODU and PCU components
only, shall be less than $1,020 U.S.
8.3.3 Reliability
The Mean Time Between Failure (MTBF) of the Zephyr subsystem shall exceed 30,000 hours.
8.3.4 Regulatory Requirements
The initial market for Zephyr is the USA. The Zephyr subsystem shall be certified for all safety and RF
emission standards required by Motorola and US regulatory agencies for product distribution in the USA.
8.3.5 Serial Communication Interface
The combination of the PCU and ODU shall provide a serial communication interface allowing a personal
computer to communicate with the ODU. This interface is to be used by a service technician to verify
ODU health, download firmware or perform other service functions. The physical connection for the
personal computer shall be to the PCU. This allows initial ODU test or service to be performed at the
PCU location which is typically indoors. The physical connection between the PCU and ODU shall be
via the IF interface.
Product Differentiating Feature
The serial communication interface is a product differentiator in comparison to the current Millitech
product line. The Millitech unit does not have a controller, as such it has no information or an interface to
communicate to an outside entity.
8.3.6 Physical Separation Between PCU and ODU
The design of the ODU and PCU shall support ODU/PCU physical separation requirements as defined in
the Eurus system specifications. Zephyr shall meet these requirements when installed as specified in the
Eurus specification.
8.3.7 Installation
The installation task shall require one service technician only. With the installation mast available,
mounting the ODU to the mast shall be accomplished in less than 10 minutes. As a design consideration,
the installation of Zephyr should be less complex than the equivalent Millitech product.
8.3.8 Interfaces
All physical interfaces shall be protected for ESD and weather effects such as rain and snow. For the case
of lightening, the equipment shall be protected from the induced energy effects of lightening. Survival of
a direct lightening strike is not required.