N79CNI-930MTWM3 Digital Data Communication Equipment

Communication Network Interface International 13F Dae-A Bidg. 165-5, DongGyo-Dong, Mapo-Ku, Seoul 121-200, Korea Tel : +82-2-330-5623 Fax: +82-2-330-5733 Federal Communications Commission Authorization and Evaluation Division Laboratory Division 7435 Oakland Mills Road Columbia, MD 21046 Date : May 3, 2000 Subject : Commitment Dear Sir/Madam : We, the undersigned, hereby authorize Intertek Testing Services to act on our behalf in all matters relating to applications for equipment authorization, including the signing of all documents relating to these matters. Any and all acts carried out by Intertek Testing Services on our behalf shall have the same effect as acts of our own. We also here by certify that no party to the applications authorized hereunder is subject to a denial of benefits, that includes FCC benefits, pursuant to Section 5301 of the Anti-Drug Abuse Act of 1988, 21 U.S.C. 853(a). This agreement expires one year from the current date.

A 1365 Adams Ct. Menlo Park, CA 94025 Communication Network Interface, Inc., Model No. CNI-930MDate of Test: May 8 & 9, 2000 FCC ID: N79CNI-930M EXTERNAL PHOTOS A 1365 Adams Ct. Menlo Park, CA 94025 Communication Network Interface, Inc., Model No. CNI-930MDate of Test: May 8 & 9, 2000 FCC ID: N79CNI-930M EXTERNAL PHOTOS A 1365 Adams Ct. Menlo Park, CA 94025 Communication Network Interface, Inc., Model No. CNI-930MDate of Test: May 8 & 9, 2000 FCC ID: N79CNI-930M EXTERNAL PHOTOS A 1365 Adams Ct. Menlo Park, CA 94025 Communication Network Interface, Inc., Model No. CNI-930MDate of Test: May 8 & 9, 2000 FCC ID: N79CNI-930M EXTERNAL PHOTOS A 1365 Adams Ct. Menlo Park, CA 94025 Communication Network Interface, Inc., Model No. CNI-930MDate of Test: May 8 & 9, 2000 FCC ID: N79CNI-930M EXTERNAL PHOTOS

A 1365 Adams Ct. Menlo Park, CA 94025 Communication Network Interface, Inc., Model No. CNI-930MDate of Test: May 8 & 9, 2000 FCC ID: N79CNI-930M LABEL/LABEL LOCATION Note: For FCC warning statement, please refer to the last page of the users guide.

A 1365 Adams Ct. Menlo Park, CA 94025 Communication Network Interface, Inc., Model No. CNI-930MDate of Test: May 8 & 9, 2000 FCC ID: N79CNI-930M INTERNAL PHOTOS A 1365 Adams Ct. Menlo Park, CA 94025 Communication Network Interface, Inc., Model No. CNI-930MDate of Test: May 8 & 9, 2000 FCC ID: N79CNI-930M INTERNAL PHOTOS A 1365 Adams Ct. Menlo Park, CA 94025 Communication Network Interface, Inc., Model No. CNI-930MDate of Test: May 8 & 9, 2000 FCC ID: N79CNI-930M INTERNAL PHOTOS A 1365 Adams Ct. Menlo Park, CA 94025 Communication Network Interface, Inc., Model No. CNI-930MDate of Test: May 8 & 9, 2000 FCC ID: N79CNI-930M INTERNAL PHOTOS A 1365 Adams Ct. Menlo Park, CA 94025 Communication Network Interface, Inc., Model No. CNI-930MDate of Test: May 8 & 9, 2000 FCC ID: N79CNI-930M INTERNAL PHOTOS A 1365 Adams Ct. Menlo Park, CA 94025 Communication Network Interface, Inc., Model No. CNI-930MDate of Test: May 8 & 9, 2000 FCC ID: N79CNI-930M INTERNAL PHOTOS A 1365 Adams Ct. Menlo Park, CA 94025 Communication Network Interface, Inc., Model No. CNI-930MDate of Test: May 8 & 9, 2000 FCC ID: N79CNI-930M INTERNAL PHOTOS A 1365 Adams Ct. Menlo Park, CA 94025 Communication Network Interface, Inc., Model No. CNI-930MDate of Test: May 8 & 9, 2000 FCC ID: N79CNI-930M INTERNAL PHOTOS A 1365 Adams Ct. Menlo Park, CA 94025 Communication Network Interface, Inc., Model No. CNI-930MDate of Test: May 8 & 9, 2000 FCC ID: N79CNI-930M INTERNAL PHOTOS A 1365 Adams Ct. Menlo Park, CA 94025 Communication Network Interface, Inc., Model No. CNI-930MDate of Test: May 8 & 9, 2000 FCC ID: N79CNI-930M INTERNAL PHOTOS

       




















  
  





































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Communication Network Interface International 13F Dae-A Bidg. 165-5, DongGyo-Dong, Mapo-Ku, Seoul 121-200, Korea Tel : +82-2-330-5623 Fax: +82-2-330-5733 Federal Communications Commission Equipment Authorization Division Application Processing Branch 7435 Oakland Mills Road Columbia, MD 21046 Date : Oct. 19, 2000 Attention : To Whom It May Concern; Reference: FCC ID : N79CNI-930M, Confirmation # EA97737 Subject : Tune up of RF power and frequency Dear sir, 1. Regarding RF power tune up, CNI currently uses power Amp, PF01411B of Hitachi (part # 124 on the part list). PF01411B controls the transmission power upon input voltage of Vapc (0.5 ~2.2 V), please see the figure 1 below for the reference. Input voltage of the Vapc is controlled by PWM pin (Pulse width Modulation) of CPU, and factory worker sets the PWM value to have the RF power less than 33dBm. For your reference, range of PWM is from 0 to 250, and even if maximum value 250 is inputted, the RF power does not exceed 33.5dBm. In addition to this, CNI-930M is designed to limit the input voltage of Vapc to give the transmission power to be less than 33dBm. Figure 1. 2. Regarding frequency tune up, CNI already provided the information in the report as follows; Frequency synthesizer and modulator Frequency synthesizer consists of PLL part, VCO module and pre-modulation filter. The PLL part is composed of phase detector, loop filter, and 12.6Mhz VCTCXO VCO module generates 896~901Mhz frequencies in accordance with the voltage which is from charge pump of PLL to loop filter. Programmable Divider in PLL makes the VCO output frequency to any channel value according to the frequency data from Logic CPU. Phase detector gets low and high frequencies from comparison of phase. Loop filter filters the frequencies to get a value of voltage. The voltage is input to VCO to achieve phase lock process. Modulation is completed when modem IC signal of Logic part is input to VCO and authorized. If you have any questions, please do not hesitate to contact us.

Intertek Testing Services 5/12/00 FCC ID: N79CNI-930M 1 FCC Part 2 SAR Evaluation Specific Absorption Rate (SAR) Test Report for Communication Network Interface, Inc. on the TWM3 (Two-Way Messenger) Digital Data Communication Equipment Model: CNI-930M Job # J2012657 Test Report: 20126572 Date of Report: May 12, 2000 NVLAP Laboratory Code 200201-0 Accred ited for te sting to FCC Parts 15 Tested by:Xi-Ming Yang Reviewed by:David Chernomordik All services undertaken are subject to the following general policy: Reports are submitted for exclusive use of the client to whom they are addressed. Their significance is subject to the adequacy and representative character of the samples and to the comprehensiveness of the tests, examinations or surveys made. This report shall not be reproduced except i n full, witho ut written co nse nt o f Interte k Tes ting Services, NA Inc. This report mus t not be used to claim product endorsement by NVLAP, NIST nor any other agency of the U.S. Government. Intertek Testing Services 5/12/00 FCC ID: N79CNI-930M 2 FCC Part 2 SAR Evaluation Table of Contents 1JOB DESCRIPTION................................................................................................................. 3 1.1Client Information ................................................................................................................ 3 1.2Equipment under test (EUT)..................................................................................................3 1.3Test plan reference................................................................................................................ 4 1.4System test configuration ...................................................................................................... 4 1.4.1System block diagram & Support equipment.................................................................... 4 1.4.2Test Position.................................................................................................................. 5 1.4.3Test Condition............................................................................................................... 6 1.5Modifications required for compliance ................................................................................... 6 1.6Additions, deviations and exclusions from standards............................................................... 6 2SAR EVALUATION .................................................................................................................6 2.1SAR Limits .......................................................................................................................... 6 2.2Configuration Photographs ....................................................................................................7 2.3System Verification .............................................................................................................. 8 2.4Evaluation Procedures........................................................................................................... 8 2.5Test Results ......................................................................................................................... 9 3TEST EQUIPMENT ................................................................................................................11 3.1Equipment List................................................................................................................... 11 3.2Muscle Tissue Simulating Liquid......................................................................................... 12 3.3E-Field Probe Calibration....................................................................................................12 3.4Measurement Uncertainty.................................................................................................... 13 3.5Measurement Tractability.................................................................................................... 13 4WARNING LABEL INFORMATION - USA...........................................................................13 5REFERENCES.........................................................................................................................14 6APPENDIX A - SAR EVALUATION DATA ................. ERROR! BOOKMARK NOT DEFINED. 7APPENDIX B - E-FIELD PROBE CALIBRATION DATA ERROR! BOOKMARK NOT DEFINED. Intertek Testing Services 5/12/00 FCC ID: N79CNI-930M 3 FCC Part 2 SAR Evaluation 1 JOB DESCRIPTION 1.1 Client Information The EUT has been tested at the request of Company: Communication Network Interface, Inc. Address: 51-2, Sungsan 1-Dong, Mapo-gu Seoul, Korea 121-251 Name of contact: Mr. Wonsuk Lee Telephone: 82-341-706-3704 Fax: 82-341-706-3704 1.2 Equipment under test (EUT) Product Descriptions: Equipment TWM3 (Two-Way Messenger) Digital Data Communication Equipment Trade Name CNI Model No.CNI-930M FCC ID N79CNI-930M S/N No. Not Labeled CategoryPortableRF Exposure Uncontrolled Environment Frequency Band (uplink) System EUT Antenna Description TypeMonopoleConfi guratio nInte r nal, Fi xed Dime nsio ns 60 mm ( L)Gain0 dBi LocationInternal at top Use of Product : Data communications Manufacturer: SAME as above. Production is planned: [X] Yes, [ ] No EUT receive date: 05/08/00 EUT received condition: Good working condition, prototype Test start date: 05/08/00 Test end date: 05/09/00 Intertek Testing Services 5/12/00 FCC ID: N79CNI-930M 4 FCC Part 2 SAR Evaluation 1.3 Test plan reference FCC rule part 2.1093, FCC Docket 96-326 & Supplement C to OET Bulletin 65 1.4 System test configuration 1.4.1 System block diagram & Support equipment The EUT is a stand alone device. The diagram shown below details test configuration of the equipment under test . S: Shielded U: Unshield F: With Ferrite Core Intertek Testing Services 5/12/00 FCC ID: N79CNI-930M 5 FCC Part 2 SAR Evaluation 1.4.2 Test Position The EUT was configured for testing in a typical fashion (as a customer would normally u…

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Intertek Testing Services 5/12/00 FCC ID: N79CNI-930M 15 FCC Part 2 SAR Evaluation 6 APPENDIX A - SAR EVALUATION DATA Please note that the graphical visualization of the phone position onto the SAR distribution gives only limited information on the current distribution of the device, since the curvature of the head results in graphical distortion. Full information can only be obtained either by H-field scans in free space or SAR evaluation with a flat phantom. Powerdrift is the measurement of power drift of the device over one complete SAR scan. Intertek Testing Services 5/12/00 FCC ID: N79CNI-930M 16 FCC Part 2 SAR Evaluation Intertek Testing Services 5/12/00 FCC ID: N79CNI-930M 17 FCC Part 2 SAR Evaluation Intertek Testing Services 5/12/00 FCC ID: N79CNI-930M 18 FCC Part 2 SAR Evaluation Intertek Testing Services 5/12/00 FCC ID: N79CNI-930M 19 FCC Part 2 SAR Evaluation Intertek Testing Services 5/12/00 FCC ID: N79CNI-930M 20 FCC Part 2 SAR Evaluation Intertek Testing Services 5/12/00 FCC ID: N79CNI-930M 21 FCC Part 2 SAR Evaluation Intertek Testing Services 5/12/00 FCC ID: N79CNI-930M 22 FCC Part 2 SAR Evaluation Intertek Testing Services 5/12/00 FCC ID: N79CNI-930M 23 FCC Part 2 SAR Evaluation

Communication Network Interface, Inc. 14F, Dae-a Bldg. 165-5, DongGyo-Dong, Mapo-ku, Seoul 121-200, Korea . Tel : 82-2-330-5776 Fax : 82-2-330- 5722 Oct. 19, 2000 Federal Communications Commission. Equipment Authorization Div. Application Processing Branch 7435 Oakland Mills Road Columbia MD 21045 Subject: Transmission duty cycle of CNI-930M To Whom It May Concern; According to Mobitex protocol, the maximum size of a packet for one-time transmission is 7,736 bits, and the data rate is 8 kbps. Therefore, transmission time at the maximum, or ‘the worst case condition’ is 0.967 sec. (7,736/8000= 0.967) Mobitex is a data communication network based on packet transaction, and its protocol allows for the individual device to control the packet transaction time. Based on the facts given above, we will modify the duty factor algorithm so that the device calculates in every packet transaction, and ensures the duty limitation is within 8.13%. However, with the modified algorithm, the device will perform transmission without having the fixed duration windowed time averaging of 320 sec. In Summary, we will remove the fixed duration windowed time averaging from the duty factor algorithm. Instead, we will change the algorithm to perform duty limitation based on the calculation whenever it transmits a packet. If you have any question, please contact us immediately.