WIGDT9969Digital Multimeter(with bluetooth module)

Page 1 of 2 Applicant SHENZHEN EVERBEST MACHINERY INDUSTRY CO., LTD FCC ID WIGDT9969 Frequency Hopping system filing requirements Requirements EUT Condition Comply Pseudorandom Frequency Hopping Sequence Describe how the hopping sequence is generated. Provide an example of the hopping sequence channels, in order to demonstrate that the sequence meets the requirement specified in the definition of a frequency hopping spread spectrum system, found in Section 2.1. The channel is represented by a pseudo-random hopping sequence hopping through the 79 RF channels. The hopping sequence is unique for the piconet and is determined by the Bluetooth device address of the master; the phase in the hopping sequence is determined by the Bluetooth clock of the master. The channel is divided into time slots where each slot corresponds to an RF hop frequency. Consecutive hops correspond to different RF hop frequencies. The nominal hop rate is 1 600 hops/s. Example of a 79 hopping sequence in data mode: 40, 21, 45, 23, 42, 53, 46, 55, 48, 31, 51, 35, 50, 65, 54, 67, 56, 37, 60, 39, 58, 69, 62, 77, 64, 25, 68, 27, 66, 57, 70, 59, 72, 29, 76, 33, 74, 61, 78, 63, 01, 41, 05, 43, 03, 73, 07, 75, 09, 44, 15, 47, 11, 71, 13, 00, 64, 49, 66, 53, 68, 02, 70, 06, 01, 52, 03, 55, 05, 04 Y Equal Hopping Frequency Use Describe how each individual EUT meets the requirement that each of its hopping channels is used equally on average (e.g., that each new transmission event begins on the next channel in the hopping sequence after the final channel used in the previous All Bluetooth units participating in the piconet are time and hop-synchronized to the channel. Y Page 2 of 2 transmission event). System Receiver Input Bandwidth Describe how the associated receiver(s) complies with the requirement that its input bandwidth (either RF or IF) matches the bandwidth of the transmitted signal. Each channel bandwidth is 1 MHz Y Equipment Description 15.247(a)(1) that the rx input bandwidths shift frequencies in synchronization with the transmitted 15.247(g): In accordance with the Bluetooth Industry Standard, the system is designed to comply with all of the regulations in Section 15.247 when the transmitter is presented with a continuous data (or information) system. 15.247(h): In accordance with the Bluetooth Industry Standard, the system does not coordinate it channels selection/ hopping sequence with other frequency hopping systems for the express purpose of avoiding the simultaneous occupancy of individual hopping frequencies by multiple transmitters. Y

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Model number: DT-9969 FCC ID: WIGDT9969

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DT-9969 RF-EXPOSURE ASSESSMENT FCC ID: WIGDT9969 The maximum power output is: 4dBm, 2.51mW. The 1-g and 10-g SAR test exclusion thresholds for 100 MHz to 6 GHz at test separation distances ≤ 50 mm are determined by: [(max. power of channel, including tune-up tolerance, mW)/(min. test separation distance, mm)] · [√f(GHz)] ≤ 3.0 for 1-g SAR and ≤ 7.5 for 10-g extremity SAR, where • f(GHz) is the RF channel transmit frequency in GHz • Power and distance are rounded to the nearest mW and mm before calculation • The result is rounded to one decimal place for comparison • 3.0 and 7.5 are referred to as the numeric thresholds in the step 2 below Assessment results: PASS FCC SAR test exclusion condition: 2.51[mW]/5.0[mm]* [√2.48(GHz)] =0.8< 7.5

FCC TEST REPORT For Digital Multimeter Model Number: DT-9969 FCC ID: WIGDT9969 Report Number : WT138004021 Test Laboratory : Shenzhen Academy of Metrology and Quality Inspection National Digital Electronic Product Testing Center Site Location : No.4 TongFa Road, Xili Town, Nanshan District, Shenzhen, China Tel : 0086-755-86009898 Fax : 0086-755-86009898-31396 Web : www.smq.com.cn Report No.:WT138001972 Page 2 of 40 Test report declaration Applicant : SHENZHEN EVERBEST MACHINERY INDUSTRY CO., LTD Address : 19 th Building, 5 th Region, Baiwangxin Industrial Park, Songbai Rd., Baimang, Xili, Nanshan, Shenzhen, China Manufacturer : SHENZHEN EVERBEST MACHINERY INDUSTRY CO., LTD Address : 19 th Building, 5 th Region, Baiwangxin Industrial Park, Songbai Rd., Baimang, Xili, Nanshan, Shenzhen, China EUT Description : Digital Multimeter Model No : DT-9969 Trade mark : CEM FCC ID : WIGDT9969 Test Standards: FCC Part 15 (10-1-12 Edition) ANSI C63.4-2009 The EUT described above is tested by Shenzhen Academy of Metrology and Quality Inspection EMC Laboratory to determine the maximum emissions from the EUT. Shenzhen Academy of Metrology and Quality Inspection EMC Laboratory is assumed full responsibility for the accuracy of the test results. The test data, data evaluation, test procedures, and equipment configurations shown in this report were made in accordance with the procedures given in ANSI C63.4 (2009) and the energy emitted by the sample EUT tested as described in this report is in compliance with FCC Rules Part 15.207, 15.209 and 15.247. The test report is valid for above tested sample only and shall not be reproduced in part without written approval of the laboratory. Project Engineer: Date: Dec.27,2013 (Chen Qichun) Dec.27,2013 Checked by: Date: (Yang Dongping) Dec.27,2013 Approved by: Date: (Lin Bin) Report No.:WT138001972 Page 3 of 40 TABLE OF CONTENTS TEST REPORT DECLARATION ........................................................................................................ 2 1. TEST RESULTS SUMMARY ................................................................................................... 5 2. GENERAL INFORMATION ...................................................................................................... 6 2.1. Report information .......................................................................................................... 6 2.2. Laboratory Accreditation and Relationship to Customer ......................................... 6 2.3. Measurement Uncertainty ............................................................................................. 7 3. PRODUCT DESCRIPTION ...................................................................................................... 8 3.1. EUT Description .............................................................................................................. 8 3.2. Related Submittal(s) / Grant (s) ................................................................................... 8 3.3. Block Diagram of EUT Configuration .......................................................................... 8 3.4. Operating Condition of EUT.......................................................................................... 8 3.5. Support Equipment List ................................................................................................. 8 3.6. Test Conditions ............................................................................................................... 9 3.7. Special Accessories ....................................................................................................... 9 3.8. Equipment Modifications ............................................................................................... 9 4. TEST EQUIPMENT USED ..................................................................................................... 10 5. CONDUCTED DISTURBANCE TEST .................................................................................. 11 5.1. Test Standard and Limit .............................................................................................. 11 5.2. Test Procedure ............................................................................................................. 11 5.3. Test Arrangement ......................................................................................................... 11 5.4. Test Data ....................................................................................................................... 11 6. RADIATED DISTURBANCE TEST ....................................................................................... 12 6.1. Test Standard and Limit .............................................................................................. 12 6.2. Test Procedure ............................................................................................................. 12 6.3. Test Arrangement ......................................................................................................... 12 6.4. Test Data ....................................................................................................................... 13 7. 20DB BANDWIDTH MEASUREMENT ................................................................................. 17 7.1. Limits of 20dB Bandwidth Measurement .................................................................. 17 7.2. Test Procedure ............................................................................................................. 17 7.3. Test Setup ..................................................................................................................... 17 Report No.:WT138001972 Page 4 of 40 7.4. Test Data ....................................................................................................................... 17 8. CARRIER FREQUENCY SEPARATION MEASUREMENT ............................................. 20 8.1. Limits of Carrier Frequency Separ…

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Radiated Disturbance