MI7-IP4B4547Base Station, IP4B4547

I I P P S S e e r r i i e e s s I I P P 4 4 B B B B a a s s e e S S t t a a t t i i o o n n P P r r o o d d u u c c t t O O w w n n e e r r ’ ’ s s M M a a n n u u a a l l Date Released: January 20, 2003 Document #: 516-80476-POM Version: A (Special Release) Copyright 2003 IPMobileNet, Inc. . 16842 Von Karman Avenue, Suite 200  Irvine, CA 92606 Voice: (949) 417-4590 Fax: (949) 417-4591 TABLE OF CONTENTS 298994.DOC Page 2 SECTION 1: THEORY OF OPERATION.................................................................................................... 3 General Block Diagram.................................................................................................................. 3 General Block Diagram Definitions ..................................................................................... 3 Input/Output........................................................................................................... 3 System Controller................................................................................................... 3 Modems ........................................................................................................... 4 Diversity Reception .......................................................................................... 4 RX Injection............................................................................................................ 4 Transmitter ............................................................................................................. 4 Receiver 1/ 2/ 3 ...................................................................................................... 4 Power Supply......................................................................................................... 4 IP4B Base Station Section Descriptions..................................................................................... 5 System Controller ................................................................................................................ 5 Input/Output ........................................................................................................................ 5 Modem Switching ................................................................................................................ 5 Modem ...............................................................................................................................6 Receive Signal Strength Indication Comparator ................................................................. 6 Baseband ............................................................................................................................ 7 Receiver Board ................................................................................................................... 7 IF Amplifier .......................................................................................................................... 7 Receiver Injection ................................................................................................................ 8 Exciter Board ....................................................................................................................... 8 Analog Modulation .............................................................................................................. 9 Phase Locked Loop ............................................................................................................ 9 Power Amplifier ................................................................................................................. 10 SECTION 2: FACTORY TEST PROCEDURE.......................................................................................... 11 Equipment List............................................................................................................................. 11 Programming and Configuring the Base Station..................................................................... 12 Adjustment / Alignment Procedure............................................................................................ 13 Receiver Injection .............................................................................................................. 13 Receiver ............................................................................................................................ 13 Diversity Reception ........................................................................................................... 14 Receive Data ..................................................................................................................... 15 Exciter ............................................................................................................................. 16 Power Amplifier ................................................................................................................. 16 SECTION 3: FCC LABEL.......................................................................................................................... 17 IP4B Base Station FCC Label Placement.................................................................................. 17 IP4B Base Station FCC Label..................................................................................................... 17 APPENDIX A: IP4B CIRCUIT BOARD DIAGRAM.................................................................................... 18 APPENDIX B: IP4B TEST DATA SHEET.................................................................................................. 22 SECTION 1: THEORY OF OPERATION 298994.DOC Page 3  GENERAL BLOCK DIAGRAM General Block Diagram Definitions For increased data security, the modem supports the U.S. Government developed Digital Encryption Standard (DES) data encryption and decryption protocols. This capability requires installation of third- party IP compliant DES encryption and decryption software. The standard IPSeries base …

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2003 IPMobileNet, Inc. Page 1 IP4B Base Station FCC Label IP4B Base Station FCC Label Placement IP4B Base Station FCC Label SCALE : 2X MUST BE SUITABLE FOR TYPING. Model: IP4B Serial No. 400-512MHz BASE STATION 6,243,393 U.S. PATENT Nos. 5.640.695, 6,018,647, Made in U.S.A. Model: IP4B Serial No. Made in U.S.A. U.S. PATENT Nos. 5.640.695, 6,018,647, 400-512MHz BASE STATION 6,243,393

EUT Cover Removed EUT Cover Removed Close-Up EUT Cover Removed Close-Up 2 Exciter PCB Top Exciter PCB Bottom Power Amp – 451 MHz - Component Power Amp – 469 MHz Component Power Amp PCB – 469 MHz Top Power Amp PCB – 469 MHz - Bottom RX Injection PCB - Top RX Injection PCB Bottom RX PCB Top RX PCB Bottom System Board PCB Top System Board PCB Top Close-Up 1 System Board PCB Top Close-Up 2 System Board PCB Top Close-Up 3 System Board PCB Top Close-Up 4 System Board PCB Top Close-Up 5 System Board PCB Top Close-Up 6 System Board PCB Top Close-Up 7 System Board PCB Top Close-Up 8 System Board PCB Top Close-Up 9 System Board PCB Top Close-Up 10 System Board PCB Top Close-Up 11 System Board PCB Top Close-Up 12 System Board PCB Top Close-Up 13 System Board PCB Bottom

IP4B Base Station Section Descriptions System Controller This section displays the Central Processing Unit (CPU)(U1), clock, and power-on reset circuitry. It provides more processing power than required for future capabilities to be incorporated without changing processors. Such capabilities include data encryption/decryption (DES) and remote fault monitoring. U1 features a 16-bit address bus and 128K of internal flash random access memory (RAM). NOTE : To enter the programming mode it is necessary to reset the switch (S1) and power up again. CPU operations are controlled by Y3 an 18.432 MHz clock module. Capacitor (C1) and an internal Schmidt trigger circuit inside of U1 generates the power on reset signal. The RESET* output from U1 drives a latch and decoder found elsewhere on the board. This section displays the RAM, decoder, EEPROM, and programming power supply circuitry. U2 is a 512K x 8 bit static RAM chip, which provides temporary storage of base station configuration data while the power is on. This is necessary in order to program the base station. U2 is controlled directly by the address, data, and control busses from the CPU. Chip U5 decodes the A11-A14 address bus to provide chip selects for the modem and EEPROM memory. Chip U6 is an 8-bit latch. It latches inputs from the D0-D7 bus and lights the front panel status indicators ( TX, CD, RX1, RX2, and RX3). Chip U3 is a serial EEPROM, which provides 2K bits of pre-programmed data storage for the CPU. Data is clocked out of U3 by EECLK, and back into the CPU via EEDATA. A programming power supply is required for the flash RAM inside of the CPU, and this function is performed by U4. This chip is a low dropout voltage regulator with a shutdown control. Resistors R22 and R21 set the output voltage. When the base station configuration data is to be stored in flash RAM, the CPU makes VPP_ENABLE high. This turns on the regulator, producing a 12-volt output via VPP for the flash RAM. This section displays a dedicated processor and voltage regulator. Chip U7 is a processor, which permits manual keyboard operation of the base station. Regulator VR2 provides 5 volts DC power for all logic circuitry on the System Controller Board. Input/Output This section displays the CPU input/output circuitry. Chip U8 is an RS232 transceiver, which interfaces the CPU to the modem via J1. From there, the RS232 data goes directly to a rear panel DB9 connector. U8 converts 5-volt logic-level data to +/-12 volt data in RS232C form, and vice-versa. A charge pump power supply on the chip converts the +5 volt DC power to the +/-12 volt levels required. The charge pump uses capacitors (C28 to C31) to generate voltages. NOTE : The RS232 serial port data transmission rate of the base station is 115.2 KBPS. Modem Switching This section displays the connector wiring and modem switching circuitry. Connector J7 is routed to the front-panel TX, CD, and RX1-RX3 LED indicators. The base station will also accept modulation from an external source (modem or amplified microphone audio). Transmission gate U10A switches this signal source. Modem This base station uses separate modems for receive and transmit functions so that full-duplex operation may be obtained. The A0-A1 address bus in addition to the individual read (RD*), write (WR*), and chip select (MODEMTXCS*) lines control all three (3) modems. Modem operations are timed by Y2, a 4.9152 MHz clock module. Modem chip U14 is dedicated to the transmit operation. Data from the D0-D7 bus is read by the chip, and then converted to a 4-level FSK analog signal, which appears on the TXOUT pin. Op amp U21B buffers the signal, which becomes the MODEM_TXMOD output. From this point, the signal is routed to the modulation circuitry on the Exciter Board. Chip U14 has the ability to demodulate receiver audio, although this capability is not used in most systems. Incoming data-bearing audio from the Diversity Reception circuitry (and selected receiver) appears at DISC_AUDIO. The signal passes through resistor R54 and into the modem chip. Resistor R52 and capacitor C41 serve as feedback elements, limiting both the gain and bandwidth of an amplifier within U14. The modem chip demodulates the audio into 8-bits of data, which exit U14 on the D0-D7 bus. Chip U14 also provides a bias voltage for the analog circuitry on the Exciter Board. This voltage is about 2.5 volts DC, and it appears on the VBIAS line. The purpose of VBIAS is to bias the Exciter Board analog circuitry for proper operation. Please note that if this voltage is low or missing, the Exciter Board circuitry may not work. Modem chip U15 is dedicated to the receive operation. Incoming data-bearing audio from the Diversity Reception circuitry (and selected receiver) appears at DISC_ AUDIO. The signal passes through resistor R56 and into the modem chip. Resistor R55 and capacitor C46 serve as feedback elements, limiting both the gain and bandwidth of an amplifier within U15. The modem chip breaks down the audio into 8 bits of data, which exit U15 on the D0-D7 bus. Modem chip U16 is also dedicated to the receive operation, although it may not be used in this application. The operation of U16 is exactly the same as U15. Receive Signal Strength Indication Comparator This section displays the RSSI comparator circuitry. A series of comparators (U20BCD) simultaneous compare RSSI1 to RSSI2, RSSI2 to RSSI3, and RSSI1 to RSSI3. Within this process eight (8) possible results are then forwarded by the comparators to a series of NAND gates (U18ABC), which reduce the number of results to three (3) and translates the results for an analog multiplexer (U19A). To determine which of the three (3) results is the strongest, the following needs to occur: ‰ For Receiver 1 to be selected as the strongest signal, both input pins on the NAND gate (U18D) must go high (driving pin 7 of U19A). If Receiver 1 has the strongest signal, a light emitting diode (LED)(D1) lights indicating Receiver 1 was select…

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SECTION 2: FACTORY TEST PROCEDURE 298989.DOC Page 1 Equipment List The following table lists the equipment required to perform the IP4B Base Station Factory Test Procedure. CHECKLIST OF REQUIRED MATERIAL FOR PRELIMINARY TESTING OF THE IPSeries BASE STATION NO. REQUIRED TOOLS ; 1 Calibrated Base Station System – Consisting of the following components: (1) Appropriate version IPSeries Base Station to be tested (2) Desktop or laptop computer configured as an Internet Protocol Network Controller (IPNC) (3) Corresponding IPSeries Mobile Radio (If an IP4B base station, use IP4 mobile radio) (4) Desktop or laptop computer with two (2) available serial ports and Microsoft Windows 95 or greater and IPMobileNet Dial-Up Networking, IPMessage software (IPMN_INVADR.exe), and HyperTerminal for base station installed … 2 Comm Test Set (HP 8920A or B) … 3 High Frequency Probe (85024A) … 4 Power Supply for 85024A Probe (HP1122A) … 5 Four (4) Channel Scope (Tektronix TDS 460A) … 6 General Purpose Scope Probe … 7 Digital multi-meter Tektronix Fluke (DMM912 77) … 8 DC power supply with ammeter, 13.8V, 12 amps or more (Astron VS12M or equivalent) … 9 100-watt dummy load/attenuator (Pasternack PE7021-40 or equivalent) … 10 Four (4) antennas (generic mag mounts) tuned to frequency or transceiver … 11 Serial cable DB9M – DB9F connectors (generic) … 12 Input/Output (I/O) Board (IPMN p/n: 502-80081) … 13 IPSeries Base Station power cable specified for use with the specific base station being used … 14 Three (3) serial DB9F-DB9M Null Modem cables … SECTION 2: FACTORY TEST PROCEDURE 298989.DOC Page 2  Programming and Configuring the Base Station This section applies to all frequency ranges of the IPSeries Base Station. Important! The base station’s IP address must be known prior to performing the procedures in this section. The programming procedure should be performed when it is necessary to upgrade a base station’s Firmware or to change the operating parameters to suit client needs. Viewing the Base Station’s Configuration Data Step 1 At the HyperTerminal window, type in the appropriate password and press [ENTER]. Step 2 Type ? and press [ENTER]. The following example displays in the HyperTerminal window: Host serial = 115200,N,8,1, timeout=200 Host framing = SLIP, no split frames no status messages tunnel = 0 TX format = new Injection = LOW SIDE, 45MHz channel spacing = 25000 Channel = 0 Channel Tx freq Rx freq Inj freq Frequency=0 , 481.000000, 486.000000, 441.000000 Serial number: yyyyyyyyy RIM address = 1 Frequency group = 1 TX quiet time = 5 Symbol sync time = 12 milliseconds, 0 extra inter-split-frame count TX tail time = 5 Radio data rate = 19200 Max data tx time = 60 seconds Carrier detect delay time = 1 millisecond Station ID = ABC123 Station ID time =10 minutes Polarity = TX+, RX+ Allow crc errors = 0 Suppress keep alive = 0 Allow base to base = 0 Timeslot status = 0 Duplicate time = 10 milliseconds Control head grant delay = 50 milliseconds RIM DD delay = 0 milliseconds Retry interval = 0 milliseconds Retry time limit = 0 milliseconds RSSI step = 25 (=19dBm) IPNC = 192.168.3.3 SLIP Address = 192.168.4.6 RF IP Address = 192.168.3.1 SNTP interval = 60 seconds num timeslots = 16 timeslot period = 992ms timeslots per voice packet = 4 noise = -128dBm Fixed TX Delay = 0 milliseconds Scale TX Delay = 0 microseconds SECTION 2: FACTORY TEST PROCEDURE 298989.DOC Page 3 Adjustment / Alignment Procedures Make appropriate notations of any items that require attention during this procedure. This information is needed later during the repair process. Startup Step 1 Remove the base station cover placing the screws in a location where they will not be misplaced. Step 2 Connect the base station to the appropriate components. Step 3 Power up the base station and computer. The power supply ammeter must read 1.2 amps or less with a 13.8 VDC input. Receiver Injection Step 1 Using the HP high frequency probe verify that the receiver injection frequency is present at each of the three (3) receivers by monitoring the receivers R24 surface mount pad which lies on the 50 ohm track between P1 and C43. Step 2 Adjust R23 on the receiver injection circuit board to set the injection frequency within 10 Hz of the exact injection frequency. The amplitude of the injection frequency should read approximately +5 dBm ±1 dBm. Receiver Step 1 Using the high frequency probe, monitor the 44.545 MHz second injection frequency at U6 pin 3, adjust trimmer capacitor (C22) to the center of the oscillator’s oscillation range. The amplitude level of pin 3 of U6 should read between +5 and +10 dBm. Step 2 Inject an on-frequency signal at a level of –80 dBm, modulated with a 1 KHz test tone at ±5.0 KHz deviation into the receiver under test. Step 3 While monitoring RSSI at TB1-4 with the digital multi-meter, sequentially adjust the bandpass filters FLT4 and FLT5 for the maximum DC voltage on the digital multi-meter. Step 4 Continue adjusting either both (3 pole FLT4) or all three (3) (4 pole FLT5) adjustment slots until further improvement in RSSI is not possible. Step 5 Check the receiver’s sensitivity, verifying that the SINAD is 12 dB or better at a maximum level of –119 dBm (-120 is typical). SECTION 2: FACTORY TEST PROCEDURE 298989.DOC Page 4    Diversity Reception Step 1 Inject an on-frequency signal at a level equal to Receiver 1 12dB SINAD level, modulated with a 1 KHz test tone at ±5.0 KHz deviation into Receiver 1. Step 2 While monitoring TP1 with the digital multi-meter, adjust RSSI1 low adjust potentiometer (R12) for a reading of 0.750 VDC ±10 mV. Step 3 Increase the amplitude of the signal by 50 dBm. Step 4 While monitoring TP1 with the digital multi-meter, adjust RSSI1 high adjust potentiometer (R11) for a reading of 2.75 VDC ±10 mV. Adjustments R11 and R12 are interactive adjustments, therefore continue adjustments until the DC voltage at TP1 is 0.750 VDC for the receiver’s 12 dB SINAD level and 2.75 VDC for a 50 dBm increase from the…

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Page 1 of 74 Report No.: FC03-006 IP MOBILENET TEST REPORT FOR THE BASE STATION, IP4B4547 FCC PART 90 AND PART 15 SUBPART B SECTIONS 15.107, 15.109 AND 15.111 COMPLIANCE DATE OF ISSUE: JANUARY 15, 2003 PREPARED FOR: IP MobileNet 16842 Von Karman Avenue Irvine, CA 92606 PREPARED BY: Mary Ellen Clayton CKC Laboratories, Inc. 5473A Clouds Rest Mariposa, CA 95338 P.O. No.: 002375-00 W.O. No.: 79827 Date of test: November 8, 2002 – January 11, 2003 Report No.: FC03-006 This report contains a total of 74 pages and may be reproduced in full only. Partial reproduction may only be done with the written consent of CKC Laboratories, Inc. The results in this report apply only to the items tested, as identified herein. Page 2 of 74 Report No.: FC03-006 TABLE OF CONTENTS Administrative Information ............................................................................................. 3 Summary of Results......................................................................................................... 4 Conditions for Compliance.............................................................................................. 4 Approvals......................................................................................................................... 4 Measurement Uncertainty................................................................................................ 4 Equipment Under Test (EUT) Description...................................................................... 5 Equipment Under Test..................................................................................................... 5 Peripheral Devices ........................................................................................................... 5 Temperature and Humidity During Testing .................................................................... 6 2.1033(c)(3) User’s Manual ............................................................................................ 6 2.1033(c)(4) Type of Emissions ...................................................................................... 6 2.1033(c)(5) Frequency Range ........................................................................................ 6 2.1033(c)(6) Operating Power ......................................................................................... 6 2.1033(c)(7) Maximum Power Rating............................................................................. 6 2.1033(c)(8) DC Voltages ............................................................................................... 6 2.1033(c)(9) Tune-Up Procedure .................................................................................... 6 2.1033(c)(10) Schematics and Circuitry Description ...................................................... 6 2.1033(c)(11) Label and Placement................................................................................. 6 2.1033(c)(12) Submittal Photos....................................................................................... 6 2.1033(c)(13) Modulation Information ........................................................................... 6 2.1033(c)(14)/2.1046/90.205(h) - RF Power Output....................................................... 7 2.1033(c)(14)/2.1047(b) - Modulation - Audio Frequency Response............................. 13 2.1033(c)(14)/2.1047(b) - Modulation Limiting Response ............................................. 13 2.1033(c)(14)/2.1049(i)/90.209/90.210 - Occupied Bandwidth...................................... 13 2.1033(c)(14)/2.1051/90.210 - Spurious Emissions at Antenna Terminal...................... 26 2.1033(c)(14)/2.105390.210 - Field Strength of Spurious Radiation.............................. 32 2.1033(c)(14)/2.1055/90.213 - Frequency Stability ........................................................ 37 90.214 – Transient Frequency Behavior.......................................................................... 44 2.1091 – MPE Calculations ............................................................................................. 47 15.107 – AC Conducted Emissions................................................................................. 48 15.109 – Radiated Emissions .......................................................................................... 62 15.111 – Antenna Power Conducted Emissions.............................................................. 72 Page 3 of 74 Report No.: FC03-006 ADMINISTRATIVE INFORMATION DATE OF TEST: November 8, 2002 – January 11, 2003 DATE OF RECEIPT: November 8, 2002 PURPOSE OF TEST: To demonstrate the compliance of the Base Station, IP4B4547 with the requirements for FCC Part 90 and Part 15 Subpart B Sections 15.107, 15.109 and 15.111 devices. TEST METHOD: FCC Part 90 and ANSI C63.4 (1992) FREQUENCY RANGE TESTED: 9 kHz - 6000 MHz MANUFACTURER: IP MobileNet 16842 Von Karman Avenue Irvine, CA 92606 REPRESENTATIVE: Jim Lukes TEST LOCATION: CKC Laboratories, Inc. 110 Olinda Place Brea, CA 92621 Page 4 of 74 Report No.: FC03-006 SUMMARY OF RESULTS As received, the IP MobileNet Base Station, IP4B4547 was found to be fully compliant with the following standards and specifications: United States ! FCC Part 90 and Part 15 Subpart B Sections 15.107, 15.109 and 15.111 using: ! FCC Part 90 and ANSI C63.4 (1992) method CONDITIONS FOR COMPLIANCE Modification: R17 of Injection board changed from 75 Ohm to 360 Ohm. APPROVALS QUALITY ASSURANCE:TEST PERSONNEL: Steve Behm, Director of Engineering Services and Quality Assurance Eddie Wong, EMC Engineer Joyce Walker, Quality Assurance Administrative Manager Monika Brandle, EMC Test Engineer Septimiu Apahidean, Lab ManagerRandy Clark, EMC Engineer Chuck Kendall, Lab Manager MEASUREMENT UNCERTAINTY TESTHIGHEST UNCERTAINTY Radiated Emissions+/- 2.94 dB Conducted Emissions+/- 1.56 dB Note: Reported uncertainties represent expanded uncertainties expressed at approximately the 95% confidence level using a covera…

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The Maximum Occupied bandwidth is a calculated value using Carson's rule; BW = 2 x max. dev. + 2 x highest modulated freq. in our case; max deviation = 5.2 kHz max modulation freq. = 4800 Hz BW = (2 x 5.2.kHz) + (2 x 4800Hz) BW = 10.4 kHz + 9600Hz BW = 20 kHz

DIRECT CONNECT DIRECT CONNECT RADIATED EMISSIONS LOOP RADIATED EMISSIONS PHOTOGRAPH SHOWING MAINS CONDUCTED EMISSIONS PHOTOGRAPH SHOWING MAINS CONDUCTED EMISSIONS 15.111 Conducted Emissions at Antenna Terminal