NTTSX1122MMDS transceiver

Thomas N. Cokenias EMC &Radio Approvals Test & Consulting Services for Commercial, Military, International Compliance P.O. Box 1086 El Granada, CA 94018 20 January 2000 FCC Laboratory 7435 Oakland Mills Road Columbia, MD 21046 Attention: Application Examiner Reviewing Engineer Re: Request for confidentiality per Section 0.459 of FCC Rules Applicant: Watkins Johnson. FCC ID: NTTSX1122 To whom it may concern, Request is hereby submitted, on behalf of my client Watkins Johnson, to withhold from public review certain portions of the application for equipment certification for the referenced FCC identifier. In particular, the following sections of the application and report are requested to be kept confidential: Schematics Block diagrams Theory of operation (P2P Architecture) Rationale for request for confidentiality: Watkins Johnson has invested considerable time and materials in research and development to produce the referenced product. Disclosure of the confidential portions of this application to competitors would give them competitive advantage in developing similar products. The $135 fee for confidentiality has been submitted along with the fee for certification. If you have questions or need further information, please contact the undersigned. Sincerely, THOMAS N. COKENIAS EMC Consultant/Agent for Watkins Johnson. Tel 650 726 1263 fax 650 726 [email protected]

Watkins Johnson.FCC ID: NTTSX1122 1 EXHIBITS EXHIBIT 1:Letter Requesting Confidentiality under Sec. 0.457(d) EXHIBIT 2: Product Description and Operation Overview EXHIBIT 3:Information for which Confidentiality is Requested Schematics Block Diagrams Theory of Operation EXHIBIT 4:Product Photographs EXHIBIT 5:User Manual and FCC ID Label EXHIBIT 6:RF Hazard Information per Sec. 1.1307 EXHIBIT 7: Report of Measurements EXHIBIT 8: Data Graphs – Emissions Masks EXHIBIT 9: Data Graphs - Out of Band Emissions EXHIBIT 10: IF Card TX Signals to RF Module Watkins Johnson.FCC ID: NTTSX1122 2 EXHIBIT 1:Letter Requesting Confidentiality under Sec. 0.457(d) Watkins Johnson.FCC ID: NTTSX1122 3 Thomas N. Cokenias EMC &Radio Approvals Test & Consulting Services for Commercial, Military, International Compliance P.O. Box 1086 El Granada, CA 94018 20 January 2000 FCC Laboratory 7435 Oakland Mills Road Columbia, MD 21046 Attention: Application Examiner Reviewing Engineer Re: Request for confidentiality per Section 0.459 of FCC Rules Applicant: Watkins Johnson. FCC ID: NTTSX1122 To whom it may concern, Request is hereby submitted, on behalf of my client Watkins Johnson, to withhold from public review certain portions of the application for equipment certification for the referenced FCC identifier. In particular, the following sections of the application and report are requested to be kept confidential: Schematics Block diagrams Theory of operation (P2P Architecture) Rationale for request for confidentiality: Watkins Johnson has invested considerable time and materials in research and development to produce the referenced product. Disclosure of the confidential portions of this application to competitors would give them competitive advantage in developing similar products. The $135 fee for confidentiality has been submitted along with the fee for certification. If you have questions or need further information, please contact the undersigned. Sincerely, THOMAS N. COKENIAS EMC Consultant/Agent for Watkins Johnson. Watkins Johnson.FCC ID: NTTSX1122 4 Tel 650 726 1263 fax 650 726 [email protected] Watkins Johnson.FCC ID: NTTSX1122 5 EXHIBIT 2:Product Description and Operation Overview Watkins Johnson.FCC ID: NTTSX1122 6 The Watkins Johnson FCC ID: NTTSX1122 is a MMDS transceiver operating under the provisions of Part 21 of the Rules. Refer to the system module diagram below: Product development strategy is to follow a modular approach. Digital data I/O for the initial version of the system will be a line card that will fit into a standard Cisco router chassis. For test purposes, a Tektronix arbitrary waveform generator will simulate the signal output of the router/line card combination. The IDU IF card up-link performs the modulation functions of the system. A 330 MHz signal is modulated with the digital data stream using Orthogonal Frequency Division Multiplexing (OFDM) techniques. The system is capable of producing channel bandwidths in 1.5 MHz multiples. The system will be configurable for use with 1.5, 3, and 6 MHz channel bandwidths. For the down-link signal, the IF card demodulates the receiver IF signal from the RF head and routes the demodulated digital information to the digital I/O card. Digitaldata I/O ARB IDU IF Card RS 232 Cable PC Controlle r -48volts ODU RF Head RS 232 Cable Bias “T” Watkins Johnson.FCC ID: NTTSX1122 7 It is anticipated that the IDU IF card will be used with a number of different RF heads, but will provide the same kind of OFDM modulation, the same IF signals, and at the same channel spacing as will be provided for the present application. The IDU output RF spectrum is shown for 6 MHz channels in Exhibit 11. The bias “T” provides DC and the 330 MHz IF signal on a single coaxial cable for routing to the RF head. The ODU RF head produces the RF transmit link at 2.5 – 2.7 GHz , and houses the receiver LNAs, receiver local oscillator, and the receiver IF bandpass filters and IF amplifiers. The RF head also houses the TX-RF diplexer. The PC controller and RS 232 cables are for system control and set-up for testing purposes. The antenna shown in the diagram is specified but not supplied by WJ. The –48 VDC supply shown in the diagram is telephone central office (CO) power or a customer provided supply. SPECIFICATIONS RF Head Frequency range: 2.5 – 2.7 GHz Power output:39dBm, 36 dBm, and 33 dBm Channel Bandwidth:1.5 MHz, 3 MHz, and 6 MHz configurable IF Head Frequency range:24 MHz clock, 330 MHz modulated carriers Power output:-13 dBm nominal (programmable) A detailed description of the theory of operation and product configuration is found in the attached document, rf hea~1.doc. Watkins Johnson.FCC ID: NTTSX1122 8 EXHIBIT 3:Information for which Confidentiality is Requested Schematics Block Diagrams Theory of Operations Watkins Johnson.FCC ID: NTTSX1122 9 Schematics - see separate attachment Watkins Johnson.FCC ID: NTTSX1122 10 Block Diagram - see separate attachment Watkins Johnson.FCC ID: NTTSX1122 11 Theory of Operation - see separate attachment: rf hea~1.doc Watkins Johnson.FCC ID: NTTSX1122 12 EXHIBIT 4: Product Photographs - see separate attachments Watkins Johnson.FCC ID: NTTSX1122 13 EXHIBIT 5:User Manual and FCC ID Label - see separate attachments Watkins Johnson.FCC ID: NTTSX1122 14 EXHIBIT 6: RF Hazard Information Per Sec. 1.1307 For transmitters operating in the 2.5-2.7 GHz frequency range, paragraph 1.1310 limits maximum permissible exposure (MPE) to 1 mW/cm2 for uncontrolled environments, and 5 mW/cm2 for controlled environments. The maximum distance from the antenna at which MPE is met or exceeded is calculated from the equation relating field strength in V/m, transmit power in watts, transmit antenna gain, and separation distance in meters: E,V/m = ( √ (30*P*G))/dPower density, mW/m2 = E 2 /3770 E for MPE 1mW/m2 = 61.4 V/md, meters = ( √ (30*P*G))/61.4 Watkins Johnson does not provide an antenna with their MMDS radio system. The licensee is responsible for plac…

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1.5 MHz HI channel – Mask detail (-40 dB attn at f= 6 MHz channel edge +250 kHz) 1.5 MHz HI channel – Mask detail (-25 dB attn at f= 6 MHz channel edge) 1.5 MHz HI channel – Mask to –60 dB at f = 6MHz channel edge + 3 MHz 1.5 MHz LO channel – Mask detail (-40 dB attn at f= 6 MHz channel edge - 250 kHz) 1.5 MHz LO channel – Mask detail (-25 dB attn at f=6 MHz channel edge) 1.5 MHz LO channel – Mask to –60 dB at f = 6MHz channel edge - 3 MHz 3 MHz LO channel – Mask detail (-40 dB attn at f= 6 MHz channel edge - 250 kHz) 1.5 MHz LO channel – Mask detail (-25 dB attn at f= 6 MHz channel edge) 3 MHz LO channel – Mask to –60 dB at f = 6MHz channel edge - 3 MHz 3 MHz HI channel – Mask detail (-40 dB attn at f= 6 MHz channel edge +250 kHz) 3 MHz HI channel – Mask detail (-25 dB attn at f= 6 MHz channel edge) 3 MHz HI channel – Mask to –60 dB at f = 6MHz channel edge + 3 MHz 6 MHz channel – Mask detail –40 dB at f=6MHz channel edge - 250 kHz 6 MHz channel – Mask detail –40 dB at f=6MHz channel edge + 250 kHz 6 MHz channel – Mask to –60 dB at +/- 3 MHz from channel edge, and –25 dB at edge

FCC ID: NTTSX1122 Antenna Output Conducted, 1 - 26 GHz

Watkins Johnson.FCC ID: NTTSX1122 1 EXHIBITS EXHIBIT 1:Letter Requesting Confidentiality under Sec. 0.457(d) EXHIBIT 2: Product Description and Operation Overview EXHIBIT 3:Information for which Confidentiality is Requested Schematics Block Diagrams Theory of Operation EXHIBIT 4:Product Photographs EXHIBIT 5:Bill of Materials (BOM) EXHIBIT 6:User Manual and FCC ID Label EXHIBIT 7:RF Hazard Information per Sec. 1.1307 EXHIBIT 8: Report of Measurements EXHIBIT 9: Data Graphs – Emissions Masks EXHIBIT 10: Data Graphs - Out of Band Emissions EXHIBIT 11: IF Card TX Signals to RF Module Watkins Johnson.FCC ID: NTTSX1122 2 EXHIBIT 1:Letter Requesting Confidentiality under Sec. 0.457(d) Watkins Johnson.FCC ID: NTTSX1122 3 Thomas N. Cokenias EMC &Radio Approvals Test & Consulting Services for Commercial, Military, International Compliance P.O. Box 1086 El Granada, CA 94018 20 January 2000 FCC Laboratory 7435 Oakland Mills Road Columbia, MD 21046 Attention: Application Examiner Reviewing Engineer Re: Request for confidentiality per Section 0.459 of FCC Rules Applicant: Watkins Johnson. FCC ID: NTTSX1122 To whom it may concern, Request is hereby submitted, on behalf of my client Watkins Johnson., to withhold from public review certain portions of the application for equipment certification for the referenced FCC identifier. In particular, the following sections of the application and report are requested to be kept confidential: Schematics Block diagrams Theory of operation (P2P Architecture) Rationale for request for confidentiality: Watkins Johnson has invested considerable time and materials in research and development to produce the referenced product. Disclosure of the confidential portions of this application to competitors would give them competitive advantage in developing similar products. The $135 fee for confidentiality has been submitted along with the fee for certification. If you have questions or need further information, please contact the undersigned. Sincerely, THOMAS N. COKENIAS EMC Consultant/Agent for Watkins Johnson. Watkins Johnson.FCC ID: NTTSX1122 4 Tel 650 726 1263 fax 650 726 [email protected] Watkins Johnson.FCC ID: NTTSX1122 5 EXHIBIT 2:Product Description and Operation Overview Watkins Johnson.FCC ID: NTTSX1122 6 The Watkins Johnson FCC ID: NTTSX1122 is a MMDS transceiver operating under the provisions of Part 21 of the Rules. The product functions as a point to point (P2P) wireless router. Refer to the system module diagram below: Product development strategy is to follow a modular approach. Digital data I/O for the initial version of the system will be a line card that will fit into a standard Watkins JohnsonuBR7246 or 7223 router chassis. For test purposes, a Tektronix arbitrary waveform generator will simulate the signal output of the router/line card combination. The IDU IF card up-link performs the modulation functions of the system. A 330 MHz signal is modulated with the digital data stream using Orthogonal Frequency Division Multiplexing (OFDM) techniques. The system is capable of producing channel bandwidths in 6 MHz multiples. The system will be configurable for use with 6 MHz and 12 MHz channel bandwidths. Digital data I/O AB IDU IF Card SPI IF Card RS 232 Cable PC Controlle r -48volts ODU RF Head RS 232 Cable Bias “T” Watkins Johnson.FCC ID: NTTSX1122 7 For the down-link signal, the IF card demodulates the receiver IF signal from the RF head and routes the demodulated digital information to the digital I/O card. It is anticipated that the IF card will be used with a number of different RF heads, but will provide the same kind of OFDM modulation, the same IF signals, and at the same channel spacing as will be provided for the present application. The IF output RF spectrum is in Exhibit 11. The bias “T” provides DC and the 330 MHz IF signal on a single coaxial cable for routing to the RF head. The ODU RF head produces the RF transmit link at 2.5 – 2.7 GHz , and houses the receiver LNAs, receiver local oscillator, and the 139 MHz receiver IF bandpass filters and IF amplifiers. The RF head also houses the TX-RF diplexer. The PC controller and RS 232 cables are for system control and set-up for testing purposes. The antenna shown in the diagram is specified but not supplied by Watkins Johnson. The –48 VDC supply shown in the diagram is telephone central office (CO) power or a customer provided supply. SPECIFICATIONS ODU RF Head Frequency range: 2.5 – 2.7 GHz Power output:30 dBm Channel Bandwidth:1.5 MHz, 3.0 MHz, and 6 MHz configurable IDU IF Head Frequency range:330 MHz 24 MHz clock Power output:330 MHz: -13 dBm nominal (programmable) 24 MHz: -12 dBm nominal Data transfer rate, air link:22 Mbs/sec (6 MHz channel) A detailed description of the theory of operation and product configuration is found in the attached document, “P2P OEM Product Architecture” (P2P-Architecture.doc, Microsoft Word file). Page 46 of this document is the system signal path block diagram. Watkins Johnson. FCC ID: NTTSX1122 8 System Interconnection uBR 7246/7223 ROUTER POWER FEED PANEL (UBR-WPFD) 1 per line card IF Cable ControlCable 48V DC Power Supply ControlCable Ligh t n in g P r o t ect o r for Control Cable 10 MHz Clock Wireless Modem Line Card (UBN- MCW- PDA) Up to 4 depending upon router Bulkhead Outdoor Unit (UBR- ODU- PAA) Duplexor (UBR- ODD- XXA) IFCable RF Cable ** Provided by Cisco Alignment port Optional cable kit one required for each line card to Power Feed Panel connection Through bulkhead connector ** Mounting Bracket Kit ** Mounting Bracket Kit Betw een-Series Adapter Monitor Cable ** Pluggable Terminal Block Rec eptac le RJ45 (M) RJ45 (M) SMA (M) SMA (M) RJ45 (F) RJ45 (F) SMA (F) SMA (F) SMA(F) SMA(F) SMA(M)SMA(M) BN C( F ) BN C( M) BN C( M) BN C( F ) DB9(M) DB9(F) N(F) N(M) N(M) N (F) N(M) N(M) N(F) ** Lemo(M) Lemo(F) N(F) N(M) xx Ω Spectrum Analyzer N(M) N(F) BN C( F ) 3.5 mm Mono Phone Jack 3.5 mm Mono Phone Plug ** Ground Lug Pigtail between unitand top of…

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