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Exhibit 8

Page 1 of 1 FCC ID: MIJZEPCPE-USB-01

12/30/99

Ground Systems Division

Exhibit 8 – User Manual

Motorola Customer Premise Equipment (CPE)

FCC ID: MIJZEPCPE-USB-01

Model No. LT 20M-00

8 Product Functional Requirements (User Manual)

8.1 Scope

The requirements described herein are functional in nature and describe Zephyr product features required

to meet LMDS Service Provider expectations. Development Engineering will generate technical

specifications which trace to or are derived from the requirements defined herein. Product qualification

shall demonstrate and verify that the following product requirements are met.

8.2 Introduction

Section 8.2, 8.2.1, 8.2.2, 8.2.3 and 8.2.4 are provided for information only. Requirements are defined

in detail in sections 8.3 and 8.4 in their entirety.

LMDS Systems utilize Customer Premise Equipment (CPE) to provide an interface for system

subscribers to input data to and receive data from the system. The CPE functional block diagram is

shown in Figure 8.2-1.

In order to input user data to the LMDS system:

• User data is input to the Indoor Unit (IDU).

• The IDU generates an upstream IF signal modulated with user data.

• The upstream IF is input to the Zephyr Outdoor Unit (ODU) through the Power Control Unit

(PCU).

• The ODU up converts the upstream IF to the upstream carrier frequency for over the air

transmission to the LMDS hub.

In order to receive data from the LMDS system:

• The ODU down converts the received over the air downstream signal to the downstream

receive IF.

• The downstream IF is input to the IDU through the PCU.

• The IDU demodulates the IF signal and recovers the user data.

• Data is output to the user.

The physical interface between the IDU and PCU is a single cable. Similarly, the physical interface

between the PCU and ODU is a single cable. The IDU is a DOCSIS compliant cable MODEM.

Summary of content (11 pages)

PAGE 1
Ground Systems Division Exhibit 8 – User Manual Motorola Customer Premise Equipment (CPE) FCC ID: MIJZEPCPE-USB-01 Model No. LT 20M-00 8 Product Functional Requirements (User Manual) 8.1 Scope The requirements described herein are functional in nature and describe Zephyr product features required to meet LMDS Service Provider expectations. Development Engineering will generate technical specifications which trace to or are derived from the requirements defined herein.
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In order to communicate with the Outdoor Unit to perform service or installation tasks, a serial communication path is provided from the ODU through the PCU to an attached personal computer. The PC executes an application program known as Radio Service Software. Based on operator selections, the PC can query the ODU to determine health status, configuration, etc. The Zephyr Product is a major portion of the subscriber CPE as indicated by the dashed line in Figure 8.2-1.
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Additionally, the ODU provides a serial communication interface to a personal computer attached through the PCU. The personal computer is used for service or ODU equipment programming, it is not required for normal operation. The ODU interfaces to the Indoor Unit through the Power Control Unit using a single coaxial cable connection. Upstream IF, Downstream IF, Power supply voltage and the serial communication interface to the ODU are multiplexed over the coaxial cable connection.
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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.
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8.3.8.1 ODU/PCU IF The upstream IF interface shall be a single cable. The connector type and the required interconnect medium shall be selected based on common use in the cable industry. Note that the cable is not included with the unit at the time of sale or in unit production cost analysis. 8.3.8.2 PCU/IDU IF The upstream IF interface shall be a single cable. The connector type and the required interconnect medium should be selected based on common use in the cable industry.
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Eurus system communication link and interference requirements. Ancillary components external to the ODU, such as attenuators, shall not be required for proper unit and system operation in various installation locations and system layouts. Installation technician intervention to adjust the transmit output power for proper unit and system operation shall not be required.
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Product Differentiating Feature The requirement for no ancillary components is a differentiating feature comparison to the current Millitech product line. The Millitech product requires attenuators external to the ODU. The attenuation value is dependent on the installation location and system layout. Following are advantages of this feature: • Reduced installation time since signal strength measurements and attenuator installation are not required.
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.4.1.6 Antenna Polarity [1] Relative polarization between the upstream and downstream signals shall be orthogonal. [2] The ODU shall be capable of being installed in the vertical or horizontal polarized position. 8.4.1.7 Health Monitoring Capability The ODU shall have the capability to self monitor key ODU functions and attributes in order to indicate health status.
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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.
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8.4.3.2 Power Supply Multiplexing Function The PCU shall combine the power supply output voltage with the IDU IF for input to the ODU via the IF cable. 8.4.4 Line Cord Receptacle The PCU line cord receptacle shall be an IEC 320 style connector or an equivalent. This allows operation with a wide variety of power outlets around the world. 8.4.5 Serial Communication Interface The data I/O connector for the serial communication interface to the ODU shall be located on the PCU. 8.4.
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8.4.7.3 Functions [1] RSS shall be capable of reading the configuration of the radio and providing display to the user. Configuration items are described in 8.4.1.9. [2] RSS shall be capable of programming the upstream sub band operating frequency of the ODU. [3] RSS shall be capable of reading the ODU health status indicators and providing display to the user. Health indicators are defined in Section 8.4.1.8. [4] RSS shall be capable of downloading firmware to the ODU.