TEST REPORT

FCC ID: T8NDIT001

Test Report

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FCCID_670399

SHENZHEN MOST ELECTRONICS CO., LTD. Tel:(86) 755-26825180 Fax:(86) 755-86170310 Http:// www. szmost.com Email: szmost@szmost.com Test Report Product Name: 49.860 MHZ WIRELESS INTERCOM SYSTEMS FCC ID: T8NDIT001 MODEL NO. : SB-102BWC Applicant: DIT DIGITAL CO., LTD. 2F, 12st, LONGBI INDUSTRIAL PARK, BANTIAN VILLAGE, BUJI TOWN, SHENZHEN, CHINA Date Received: 5/19/2006 Date Tested: 5/23/2006 APPLICANT: DIT DIGITAL CO., LTD. FCC ID: T8NDIT001 Cover Sheet

SHENZHEN MOST ELECTRONICS CO., LTD. Tel:(86) 755-26825180 Fax:(86) 755-86170310 Http:// www. szmost.com Email: szmost@szmost.com TABLE OF CONTENTS APPLICANT: DIT DIGITAL CO., LTD. FCC ID: T8NDIT001 TEST REPORT CONTAINING: PAGE 1...........TEST EQUIPMENT LIST PAGE 2...........TEST PROCEDURE PAGE 3-5.........POWER LINE CONDUCTED INTERFERENC AND PLOTS PAGE 6-7.........RADIATION INTERFERENCE TEST DATA PAGE 8-9.........OCCUPIED BANDWIDTH AND PLOTS EXHIBIT INCLUDED: PAGE 1...........BLOCK DIAGRAM PAGE 2...........SCHEMATIC PAGE 3...........USERS MANUAL PAGE 4...........LABEL SAMPLE PAGE 5...........LABEL LOCATION PAGE 6...........EXTERNAL PHOTOGRAPHS PAGE 7...........INTERNAL PHOTOGRAPHS PAGE 8...........OPERATIONAL DESCRIPTION PAGE 9...........TEST SET UP PHOTOGRAPHS APPLICANT: DIT DIGITAL CO., LTD. FCC ID: T8NDIT001 TABLE OF CONTENTS

SHENZHEN MOST ELECTRONICS CO., LTD. Tel:(86) 755-26825180 Fax:(86) 755-86170310 Http:// www. szmost.com Email: szmost@szmost.com EMC Equipment List Equipment Manufacturer Model No. Serial No. Last Cal. Cal. Interval EMI Test Receiver ROHDE&SCHWARZ ESCS30 100307 Mar 20,2006 1 Year LISN ROHDE&SCHWARZ ESH3-Z5 100305 Mar 20,2006 1Year Pulse Limiter ROHDE&SCHWARZ ESH3-Z2 100305 Mar 20,2006 1Year 50Ω Coaxial Switch ANRITSU CORP MP59B 6200283933Mar 20,2006 1 Year Spectrum Analyzer ANRITSU MS2651B 6200238856Mar 20,2006 1 Year Bilog Antenna SCHWARZBECK VULB 9163 9163-194 Mar 20,2006 1 Year 50Ω Coaxial Switch ANRITSU CORP MP59B 620028393 Mar 20,2006 1 Year 3 Cable Resenberger N/A NO.1 Mar 20,2006 1 Year Cable SCHWARZBECK N/A NO.2 Mar 20,2006 1 Year Cable SCHWARZBECK N/A NO.3 Mar 20,2006 1 Year DC Power Filter DuoJi DL2°30B N/A N/A N/A Single Phase Power DuoJi FNF 202B30 N/A N/A N/A Line Filter 3 Phase Power Line DuoJi FNF 402B30 N/A N/A N/A Filter AC Power Source California 5001iX-400 55689 Mar 20,2006 1Year Instruments Test analyzer California PACS-1 72254 Mar 20,2006 1Year Instruments ESD Tester HAEFELY PESD 1610 H4001552 Mar 20,2006 1 Year Signal Generator IFR 2032 203002/100 Mar 20,2006 1 Year Amplifier A&R 150W1000 301584 NCR NCR Dual Directional A&R DC6080 301508 Mar 20,2006 1 Year Coupler Power Head A&R PH2000 301193 Mar 20,2006 1 Year Power Meter A&R PM2002 302799 Mar 20,2006 1 Year Field Monitor A&R FM5004 300329 Mar 20,2006 1 Year Field Probe A&R FP5000 300221 Mar 20,2006 1 Year EMCPRO System Thermo RO-BASE 0403271 Mar 20,2006 1 Year Capacitive Clamp Thermo PRO-CCL 0403272 Mar 20,2006 1 Year EMCPRO System Thermo PRO-BASE 0403271 Mar 20,2006 1 Year Coupler decoupler Thermo CM-TEL-CD 0403273 Mar 20,2006 1 Year for telecom lines Signal Generator IFR 2032 203002/100 Mar 20,2006 1 Year Amplifier A&R 150W1000 301584 NCR NCR EMCPRO System Thermo PRO-BASE 0403271 Mar 20,2006 1 Year APPLICANT: DIT DIGITAL CO., LTD. FCC ID: T8NDIT001 Page 1 of 9

SHENZHEN MOST ELECTRONICS CO., LTD. Tel:(86) 755-26825180 Fax:(86) 755-86170310 Http:// www. szmost.com Email: szmost@szmost.com TEST PROCEDURE GENERAL: This report shall NOT be reproduced except in full without the written approval of SHENZHEN MOST ELECTRONICS CO., LTD. The EUT was transmitting a test signal during the testing. POWER LINE CONDUCTED INTERFERENCE: The test procedure used was ANSI Standard C63.4-2003 using a 50ｕH LISN. Both Lines were observed. The bandwidth of the receiver was 10kHz with an appropriate sweep speed. The ambient temperature of the EUT was 25℃ with a humidity of 58%. RADIATION INTERFERENCE: The test procedure used was ANSI Standard C63.4-2003 using a ANRITSU spectrum analyzer with a pre-selector. The analyzer was calibrated in dB above a micro volt at the output of the antenna. The resolution bandwidth was 100 kHz and the video bandwidth was 300 kHz up to 1 GHz and 1 MHz with a video BW of 3 MHz above 1 GHz. The ambient temperature of the EUT was 25℃with a humidity of 58%. FORMULA OF CONVERSION FACTORS: The Field Strength at 3m was established by adding the meter reading of the spectrum analyzer (which is set to read in units of dBuV) to the antenna correction factor supplied by the antenna manufacturer. The antenna correction factors are stated in terms of dB. The gain of the Pre-selector was accounted for in the Spectrum Analyzer Meter Reading. Example: Freq (MHz) METER READING + ACF = FS 33 20 dBuV + 10.36 dB = 30.36 dBuV/m @ 3m ANSI STANDARD C63.4-2003 10.1.7 MEASUREMENT PROCEDURES: The EUT was placed on a table 80 cm high and with dimensions of 1m by 1.5m. The EUT was placed in the center of the table (1.5m side). The table used for radiated measurements is capable of continuous rotation. When an emission was found, the table was rotated to produce the maximum signal strength. At this point, the antenna was raised and lowered from 1m to 4m. The antenna was placed in both the horizontal and vertical planes. The situation was similar for the conducted measurement except that the table did not rotate. The EUT was setup as described in ANSI Standard C63.4-2003 10.1.7 with the EUT 40 cm from the vertical ground wall. APPLICANT: DIT DIGITAL CO., LTD. FCC ID: T8NDIT001 Page 2 of 9

SHENZHEN MOST ELECTRONICS CO., LTD. Tel:(86) 755-26825180 Fax:(86) 755-86170310 Http:// www. szmost.com Email: szmost@szmost.com APPLICANT: DIT DIGITAL CO., LTD. FCC ID: T8NDIT001 NAME OF TEST: POWER LINE CONDUCTED INTERFERENCE RULES PART NUMBER: 15.107 MINIMUM REQUIREMENTS: FREQUENCY LEVEL MHz ｕV 0.450-30 250 TEST PROCEDURE: ANSI STANDARD C63.4-2003 THE HIGHEST EMISSION READ FOR LINE 1 WAS 29.1ｕV ＠ 475kHz. THE HIGHEST EMISSION READ FOR LINE 2 WAS 28.8ｕV ＠ 475kHz. THE PLOTS ON THE NEXT PAGE REPRESENT THE EMISSIONS READ FOR POWER LINE CONDUCTED FOR THIS DEVICE. APPLICANT: DIT DIGITAL CO., LTD. FCC ID: T8NDIT001 Page 3 of 9

SHENZHEN MOST ELECTRONICS CO., LTD. Tel:(86) 755-26825180 Fax:(86) 755-86170310 Http:// www. szmost.com Email: szmost@szmost.com RBW 9 kHz MT 1 ms Att 10 dB PREAMP OFF dBµV 80 1 MHz 10 MHz 70 1 PK MAXH FCC15Q 2 AV 60 CLRWR TDF FCC15A 50 40 30 20 10 0 150 kHz 30 MHz Date: 19.APR.2006 Date: 19.MAY.2006 08:43:53 09:21:53 L Line APPLICANT: DIT DIGITAL CO., LTD. FCC ID: T8NDIT001 Page 4 of 9

SHENZHEN MOST ELECTRONICS CO., LTD. Tel:(86) 755-26825180 Fax:(86) 755-86170310 Http:// www. szmost.com Email: szmost@szmost.com RBW 9 kHz MT 10 ms Att 10 dB PREAMP OFF dBµV 80 1 MHz 10 MHz 70 1 PK MAXH FCC15Q 2 AV 60 CLRWR TDF FCC15A 50 40 30 20 10 0 150 kHz 30 MHz Date:19.APR.2006 Date: 19.MAY.200608:45:00 09:25:15 N Line APPLICANT: DIT DIGITAL CO., LTD. FCC ID: T8NDIT001 Page 5 of 9

SHENZHEN MOST ELECTRONICS CO., LTD. Tel:(86) 755-26825180 Fax:(86) 755-86170310 Http:// www. szmost.com Email: szmost@szmost.com APPLICANT: DIT DIGITAL CO., LTD. FCC ID: T8NDIT001 NAME OF TEST: RADIATION INTERFERENCE RULES PART NUMBER: 15.235 REQUIREMENTS: CARRIER FREQUENCY WILL NOT EXCEEDS 80 dBuV/m AT 3M. OUT-OF-BAND EMISSIONS SHALL NOT EXCEED: 30 - 88 MHz 40.0 dBuV/M MEASURED AT 3 METERS 88 - 216 MHz 43.5 dBuV/M 216 - 960 MHz 46.0 dBuV/M ABOVE 960 MHz 54.0 dBuV/M Fundamental Radiation Interference Data: Frequency (MHz) Antenna Polarization Emission Level (dBuV/m) FCC 15 Subpart C Limit (dBuV/m) 49.86 Horizontal 54.50 25.50 49.86 Vertical 68.00 12.00 APPLICANT: DIT DIGITAL CO., LTD. FCC ID: T8NDIT001 Page 6 of 9

SHENZHEN MOST ELECTRONICS CO., LTD. Tel:(86) 755-26825180 Fax:(86) 755-86170310 Http:// www. szmost.com Email: szmost@szmost.com APPLICANT: DIT DIGITAL CO., LTD. FCC ID: T8NDIT001 NAME OF TEST: RADIATION INTERFERENCE RULES PART NUMBER: 15.235 REQUIREMENTS: CARRIER FREQUENCY WILL NOT EXCEEDS 80 dBuV/m AT 3M. OUT-OF-BAND EMISSIONS SHALL NOT EXCEED: 30 - 88 MHz 40.0 dBuV/M MEASURED AT 3 METERS 88 - 216 MHz 43.5 dBuV/M 216 - 960 MHz 46.0 dBuV/M ABOVE 960 MHz 54.0 dBuV/M Continued: Frequency (MHz) Antenna Polarization Emission Level (dBuV/m) FCC 15 Subpart C Limit (dBuV/m) 99.80 Vertical 31.53 11.97 378.70 Vertical 26.25 19.75 453.50 Vertical 28.60 17.40 SAMPLE CALCULATION: FSdBuV/m = MR (dBuV) + ACFdB. TEST PROCEDURE: The procedure used was ANSI STANDARD C63.4-2003. The spectrum was scanned from 30 MHz to 1000 MHz. When an emission was found, the table was rotated to produce the maximum signal strength. The antenna was placed in both the horizontal and vertical planes and the worse case emissions were reported. APPLICANT: DIT DIGITAL CO., LTD. FCC ID: T8NDIT001 Page 7 of 9

SHENZHEN MOST ELECTRONICS CO., LTD. Tel:(86) 755-26825180 Fax:(86) 755-86170310 Http:// www. szmost.com Email: szmost@szmost.com APPLICANT: DIT DIGITAL CO., LTD. FCC ID: T8NDIT001 NAME OF TEST: Occupied Bandwidth RULES PART NUMBER: 15.235 REQUIREMENTS: The field strength of any emissions appearing between the band edges and up to 10 kHz above and below the band edges shall be attenuated at least 26 dB below the level of the un-modulated carrier or to the general limits of 15.209, whichever permits the higher emission levels. Band edge emissions plots are included on the following pages METHOD OF MEASUREMENT: A small sample of the transmitter output was fed into the spectrum analyzer and the attached plot was printed. The vertical scale is set to -10 dB per division. TEST RESULTS: The unit DOES meet the FCC requirements. APPLICANT: DIT DIGITAL CO., LTD. FCC ID: T8NDIT001 Page 8 of 9

SHENZHEN MOST ELECTRONICS CO., LTD. Tel:(86) 755-26825180 Fax:(86) 755-86170310 Http:// www. szmost.com Email: szmost@szmost.com APPLICANT: DIT DIGITAL CO., LTD. FCC ID: T8NDIT001 Page 9 of 9


Document Created: 2006-06-02 11:17:23
Document Modified: 2006-06-02 11:17:23
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