User's Manual

Exhibit 8
Page 9 of 9 FCC ID: MIJZEPCPE-USB-01
12/30/99
The Zephyr product shall not require scheduled maintenance during a life span of 10 years. The Zephyr
product design shall not include fan filters or other “wear items” with a projected life of less than 10 years.
8.4.1.13 Design Considerations
Any fuses utilized in the Zephyr product design shall not be accessible for replacement without opening
the ODU or PCU.
The Zephyr product design shall not include battery components.
8.4.1.14 Motorola Common Requirements
The Zephyr product shall meet Motorola requirements for end of life disposal.
8.4.2 Zephyr Firmware
8.4.2.1 Storage
The ODU shall store the firmware program in nonvolatile memory.
8.4.2.2 Firmware Download
Firmware shall be downloaded via the serial communication interface with no requirements to
disassemble the ODU. The unit shall remain in operation without disruption while firmware is
downloaded and execution of the new firmware version is initiated.
8.4.2.3 Version Numbering
The firmware version numbering scheme shall indicate the feature set provided.
8.4.2.4 Media
The media used for Zephyr Firmware distribution shall be CD ROM.
8.4.3 Power Control Unit
The Power Control Unit (PCU) provides DC power to the ODU. Additionally, it provides a data
connector for the serial communication interface between a personal computer and the ODU. The PCU
shall be applicable to all Zephyr ODU products independent of ODU operating frequency and geographic
location. As indicated in Section 8.3.4, the PCU must be certified for use in the USA to support initial
rollout of the B band product. Additionally, for future market rollout, the PCU shall be capable of
regulatory certification in all other regions around the world.
8.4.3.1 Power Supply Function
The PCU shall convert AC line power to DC voltage to provide power required by the ODU. The PCU
shall operate for AC voltages in the range of 90V
ac
to 260V
ac
and in the frequency range of 50Hz to 60Hz.
The PC shall automatically sense the input voltage and operate with that voltage. No operator selection
shall be required.
The PCU shall survive without damage a short circuit of the output voltage to ground. Operation shall be
restored automatically with no requirement for user intervention when the short circuit condition is
remedied.