DI2CT-EM2531Zigbee Module

EM2531/01 ZigBee- Ready RF Transceiver Modules All rights reserved. Property of Computime Ltd. 2 / 13 V1.0 TABLE OF CONTENTS GENERAL DESCRIPTION ..........................................................................1 Applications................................................................................................. 1 Features....................................................................................................... 1 Absolute Maximum Ratings.......................................................................... 3 Recommended Operating Conditions.................................................3 Electrical Specifications.................................................................................3 Quick Product Introduction.................................. ........................................ 5 Typical application circuit...............................................................................5 Pin Assignment..............................................................................................6 Block Diagram...............................................................................................7 Circuit Description ........................................................................................7 SIF Module Programming and Debug Interface...........................................8 Power Management.....................................................................................8 RF Frequency, Output Power Levels and Data Rates.................................9 PCB Layout Recommendations................................................................ 12 Mechanical Dimensions..............................................................................13 EM2531/01 ZigBee- Ready RF Transceiver Modules All rights reserved. Property of Computime Ltd. 8 / 13 V1.0 SIF Module Programming and Debug Interface SIF is a synchronous serial interface developed by Cambridge Consultants Ltd. It is the primary programming and debug interface of the CT-EM2500. The SIF module allows external devices to read and write memory-mapped registers in real-time without changing the functionality or timing of the XAP2b core. The SIF interface provides the following: z IC production test (especially analog) z PCB production test z XAP2b code development z Product control and characterization The pins are: z SIF_LOADB z SIF_CLK z SIF_MOSI z SIF_MISO The maximum serial shift speed for the SIF interface is 48MHz. SIF interface accesses can be initiated even when the chip is in idle and deep sleep modes. An edge on SIF_LOADB wakes the chip to allow SIF cycles. Power Management The CT-EM2500 supports three different power modes: processor ACTIVE, processor IDLE, and DEEP SLEEP. The IDLE power mode stops code execution of the XAP2b until any interrupt occurs or an external SIF wakeup command is seen. All peripherals including the radio continue to operate normally. The DEEP SLEEP power mode powers off most of the module but leaves the critical chip functions, such as the GPIO pads and RAM powered by the High Voltage Supply (VDD_PADS). The module can be woken by configuring the sleep timer to generate an interrupt after a period of time, using an external interrupt, or with the SIF interface. Activity on a serial interface may also be configured to wake the module, though actual reception of data is not re-enabled until the module has finished waking up. Depending on the speed of the serial data, it is possible to finish waking up in the middle of a byte. Care must be taken to reset the serial interface between bytes and discard any garbage data before the rest. Another condition for wakeup is general activity on GPIO pins. EM2531/01 ZigBee- Ready RF Transceiver Modules RF Frequency, Output Power Levels and Data Rates The following table shows the RF channels as defined by the IEEE 802.15.4 standard. For proprietary solutions (non-IEEE 802.15.4), the RF transceiver can be programmed in resolution of 11.7 KHZ. The output power level can be configured from the firmware in the range -32 to 5 dBm. The RF transceiver uses direct sequence spread spectrum (DSSS) with 2 Mchip/s chip rate, giving a raw data rate of 250 kbit/s. The modulation format is Offset – Quadrature Phase Shift Keying (O-QPSK). The DSSS makes the communication link robust in noisy environments when sharing the same frequency band with other applications. The use of RF frequencies and maximum allowed RF power is limited by national regulations. The CT-EM2500 is complying with the applicable regulations for the world wide 2.45 GHz ISM band. Specifically it complies with the European Union R&TTE directive meeting EN 300 328 . It also meets the FCC CFR47 Part15 regulations for use in the US and the ARIB T-66 for use in Japan. All rights reserved. Property of Computime Ltd. 9 / 13 V1.0 EM2531/01 ZigBee- Ready RF Transceiver Modules side. The rest of the PCB board should have a ground plane as large as possible, preferably as large (in one dimension) as the antenna itself, to make it act as a a reflector mirror to the antenna. A quarter wavelength Antenna on a PCB must be shorter than the wire antenna due to the influence of the dielectric material of the PCB. The length reduction depends on the PCB thickness and material, as well as how close to the edge of the board the antenna is placed. Typical reduction is to 75-90 % but must be found empirically. The length of a quarter-wave antenna is given in the table below. If, for space reasons, the track is made even shorter than the resonating quarter of wavelength, the antenna should be matched to 50 ohms using a series inductor and a shunt capacitor. PCB Layout Recommendations For recommended layout pads for the module, please reference Mechanical Dimensions The area underneath the module should be covered with solder resist in order to prevent short circuiting the test pads on the back side of the module. A solid ground plane is preferred. Unconnect…

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信宝股份有限公司 Neutron Engineering Inc. No.3, JinShaGang 1 st Road, ShiXia, DaLang Town, DongGuan, China. Tel:+86-769-83183000 Fax:+86-769-83196000 http：www.btl.org.cn FM-404-21 Ver.7 3/13/2008 Declaration Letter To: EMCC We, N e u t r o n E n g i n e e r i n g I n c . wish to receive a modular approval. Product name: Zigbee Module Model name: EM2531 I declarated here that the device complies with the requirements of DA 00-1407. The requirements of DA00-1407 as below: 1. The modular transmitter must have its own RF shielding. This is intended to ensure that the module does not have to rely upon the shielding provided by the device into which it is installed in order for all modular transmitter emissions to comply with Part 15 limits. It is also intended to prevent coupling between the RF circuitry of the module and any wires or circuits in the device into which the module is installed. Such coupling may result in non-compliant operation. 2. The modular transmitter must have buffered modulation/data inputs (if such inputs are provided) to ensure that the module will comply with Part 15 requirements under conditions of excessive data rates or over-modulation. 3. The modular transmitter must have its own power supply regulation. This is intended to ensure that the module will comply with Part 15 requirements regardless of the design of the power supplying circuitry in the device into which the module is installed. 4. The modular transmitter must comply with the antenna requirements of Section 15.203 and 15.204(c). The antenna must either be permanently attached or employ a “unique” antenna coupler (at all connections between the module and the antenna, including the cable). Any antenna used with the module must be approved with the module, either at the time of initial authorization or through a Class II permissive change. The “professional installation” provision of Section 15.203 may not be applied to modules. 5. The modular transmitter must be tested in a stand-alone configuration, i.e., the module must not be inside another device during testing. This is intended to demonstrate that the module is capable of complying with Part 15 emission limits regardless of the device into which it is eventually installed. Unless the transmitter module will be battery powered, it must comply with the AC line conducted requirements found in Section 15.207. AC or DC power lines and data input/output lines connected to the module must not contain ferrites, unless they will 信宝股份有限公司 Neutron Engineering Inc. No.3, JinShaGang 1 st Road, ShiXia, DaLang Town, DongGuan, China. Tel:+86-769-83183000 Fax:+86-769-83196000 http：www.btl.org.cn FM-404-21 Ver.7 3/13/2008 be marketed with the module (see Section 15.27(a)). The length of these lines shall be length typical of actual use or, if that length is unknown, at least 10 centimeters to insure that there is no coupling between the case of the module and supporting equipment. Any accessories, peripherals, or support equipment connected to the module during testing shall be unmodified or commercially available (see Section 15.31(i)). 6. The modular transmitter must be labeled with its own FCC ID number, and, if the FCC ID is not visible when the module is installed inside another device, then the outside of the device into which the module is installed must also display a label referring to the enclosed module. This exterior label can use wording such as the following: “Contains Transmitter Module FCC ID: XYZMODEL1” or “Contains FCC ID: XYZMODEL1.” Any similar wording that expresses the same meaning may be used. The Grantee may either provide such a label, an example of which must be included in the application for equipment authorization, or, must provide adequate instructions along with the module which explain this requirement. In the latter case, a copy of these instructions must be included in the application for equipment authorization. 7. The modular transmitter must comply with any specific rule or operating requirements applicable to the transmitter and the manufacturer must provide adequate instructions along with the module to explain any such requirements. A copy of these instructions must be included in the application for equipment authorization. For example, there are very strict operational and timing requirements that must be met before a transmitter is authorized for operation under Section 15.231. For instance, data transmission is prohibited, except for operation under Section 15.231(e), in which case there are separate field strength level and timing requirements. Compliance with these requirements must be assured. 8. The modular transmitter must comply with any applicable RF exposure requirements. For example, FCC Rules in Sections 2.1091, 2.1093 and specific Sections of Part 15, including 15.319(i), 15.407(f), 15.253(f) and 15.255(g), require that Unlicensed PCS, UNII and millimeter wave devices perform routine environmental evaluation for RF Exposure to demonstrate compliance. In addition, spread spectrum transmitters operating under Section 15.247 are required to address RF Exposure compliance in accordance with Section 15.247(b)(4). Modular transmitters approved under other Sections of Part 15, when necessary, may also need to address certain RF Exposure concerns, typically by providing specific installation and operating instructions for users, installers and other interested parties to ensure compliance. Neutron Engineering Inc. Jojo Zhou 2008-3-13

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1.1. Test Result of RF Exposure Evaluation . Product: Zigbee Module . Test Item: RF Exposure Evaluation Data . Test site: OATSI-SD . Test Mode: Normal Operation 1.1.1. Antenna Gain The maximum Gain is 1.0 dBi. 1.1.2. EUT Operation condition Software provided by client enabled the EUT to transmit and receive data at lowest, middle and highest channel individually. 1.1.3. Output Power into Antenna & RF Exposure Evaluation Distance Modulation Standard: IEEE 802.15.4 Test Date: Dec. 25, 2007 Temperature: 23°C Humidity: 58 % Channel Channel Frequency (MHz) Output Power to Antenna (dBm) Power Density (S) (mW/cm 2 ) 01 2405 -1.42 0.000181 09 2445 -0.47 0.000225 16 2480 0.07 0.000255 The MPE is calculated as 0.000255 mW / cm 2 < limit 1 mW / cm 2 . So, RF exposure limit warning or SAR test are not required. For 2405-2480 MHz, the EUT will only be used with a separation of 20cm or greater between the antenna and nearby persons and can therefore be considered a mobile transmitter per 47CFR2.1091 (b). The RF Exposure Information page from the manual is included here for reference.

Report No.: NEI-FCCP-1-0711C138 Page 2 of 57 Neutron Engineering Inc. Declaration Neutron represents to the client that testing is done in accordance with standard procedures as applicable and that test instruments used has been calibrated with the standards traceable to National Measurement Laboratory (NML) of R.O.C., or National Institute of Standards and Technology (NIST) of U.S.A. Neutron's reports apply only to the specific samples tested under conditions. It is manufacture’s responsibility to ensure that additional production units of this model are manufactured with the identical electrical and mechanical components. Neutronshall have no liability for any declarations, inferences o r generalizations drawn by the client or others from Neutron issued reports. Neutron’s reports must not be used by the client to claim product endorsement by the authorities or any agency of the Government. This report is the confidential property of the client. As a mutual protection to the clients, the public and Neutron-self, extracts from the test report shall not be reproduced except in full with Neutron’s authorized written approval. Neutron’s laboratory quality assurance procedures are in compliance with the ISO Guide 17025 requirements, and accredited by the conformity assessment authorities listed in this test report. Limitation For the use of the authority's logo is limited unless the Test Standard(s)/Scope(s)/Item(s) mentioned in this test report is (are) included in the conformity assessment authorities acceptance respective. Report No.: NEI-FCCP-1-0711C138 Page 3 of 57 Neutron Engineering Inc. Table of Contents Page 1 . CERTIFICATION 5 2 . SUMMARY OF TEST RESULTS 6 2.1 TEST FACILITY 7 2.2 MEASUREMENT UNCERTAINTY 7 3 . GENERAL INFORMATION 8 3.1 GENERAL DESCRIPTION OF EUT 8 3.2 DESCRIPTION OF TEST MODES 10 3.3 TABLE OF PARAMETERS OF TEXT SOFTWARE SETTING 10 3.4 BLOCK DIGRAM SHOWING THE CONFIGURATION OF SYSTEM TESTED 11 3.5 DESCRIPTION OF SUPPORT UNITS 12 4 . EMC EMISSION TEST 13 4.1 CONDUCTED EMISSION MEASUREMENT 13 4.1.1 POWER LINE CONDUCTED EMISSION LIMITS 13 4.1.2 MEASUREMENT INSTRUMENTS LIST AND SETTING 13 4.1.3 TEST PROCEDURE 14 4.1.4 DEVIATION FROM TEST STANDARD 14 4.1.5 TEST SETUP 14 4.1.6 EUT OPERATING CONDITIONS 15 4.1.7 TEST RESULTS 16 4.2 RADIATED EMISSION MEASUREMENT 18 4.2.1 RADIATED EMISSION LIMITS 18 4.2.2 MEASUREMENT INSTRUMENTS LIST ANS SETTING 19 4.2.3 TEST PROCEDURE 20 4.2.4 DEVIATION FROM TEST STANDARD 20 4.2.5 TEST SETUP 21 4.2.6 EUT OPERATING CONDITIONS 21 4.2.7 TEST RESULTS (BETWEEN30 – 1000 MHZ) 22 4.2.8 TEST RESULTS (ABOVE 1000 MHZ) 24 4.2.9 TEST RESULTS (RESTRICTED BANDS REQUIREMENTS) 36 5 . BANDWIDTH TEST 40 5.1 APPLIED PROCEDURES / LIMIT 40 5.1.1 MEASUREMENT INSTRUMENTS LIST 40 5.1.2 TEST PROCEDURE 40 5.1.3 DEVIATION FROM STANDARD 40 5.1.4 TEST SETUP 40 5.1.5 EUT OPERATION CONDITIONS 40 Report No.: NEI-FCCP-1-0711C138 Page 4 of 57 Neutron Engineering Inc. Table of Contents Page 5.1.6 TEST RESULTS 41 6 . PEAK OUTPUT POWER TEST 43 6.1 APPLIED PROCEDURES / LIMIT 43 6.1.1 MEASUREMENT INSTRUMENTS LIST 43 6.1.2 TEST PROCEDURE 43 6.1.3 DEVIATION FROM STANDARD 43 6.1.4 TEST SETUP 43 6.1.5 EUT OPERATION CONDITIONS 43 6.1.6 TEST RESULTS 44 7 . ANTENNA CONDUCTED SPURIOUS EMISSION 45 7.1 APPLIED PROCEDURES / LIMIT 45 7.1.1 MEASUREMENT INSTRUMENTS LIST 45 7.1.2 TEST PROCEDURE 45 7.1.3 DEVIATION FROM STANDARD 45 7.1.4 TEST SETUP 45 7.1.5 EUT OPERATION CONDITIONS 46 7.1.6 TEST RESULTS 47 8 . POWER SPECTRAL DENSITY TEST 49 8.1 APPLIED PROCEDURES / LIMIT 49 8.1.1 MEASUREMENT INSTRUMENTS LIST 49 8.1.2 TEST PROCEDURE 49 8.1.3 DEVIATION FROM STANDARD 49 8.1.4 TEST SETUP 49 8.1.5 EUT OPERATION CONDITIONS 49 8.1.6 TEST RESULTS 50 9 . RF EXPOSURE TEST 52 9.1 APPLIED PROCEDURES / LIMIT 52 9.1.1 MEASUREMENT INSTRUMENTS LIST 52 9.1.2 MPE CALCULATION METHOD 52 9.1.3 DEVIATION FROM STANDARD 53 9.1.4 TEST SETUP 53 9.1.5 EUT OPERATION CONDITIONS 53 9.1.6 TEST RESULTS 54 10 . EUT TEST PHOTO 55 Report No.: NEI-FCCP-1-0711C138 Page 5 of 57 Neutron Engineering Inc. 1. CERTIFICATION E q u i p m e n t : Zigbee Module Trade Name : Computime Model Name : EM2531 A p p l i c a n t : Computime Limited T e s t I t e m : ENGINEERING SAMPLE Standards : FCC Part15, Subpart C(15.247) / ANCI C63.4 : 2003 The above equipment has been tested and found compliance with the requirement of the relative standards by Neutron Engineering Inc. EMC Laboratory. The test data, data evaluation, and equipment configuration contained in our test report (Ref No. NEI-FCCP-1-0711C138) were obtained utilizing the test procedures, test instruments, test sites that has been accredited by the Authority of NVLAP and TAF according to the ISO-17025 quality assessment standard and technical standard(s). Test result included in this report is only for the Zigbee part of the product. Report No.: NEI-FCCP-1-0711C138 Page 6 of 57 Neutron Engineering Inc. 2. SUMMARY OF TEST RESULTS Test procedures according to the technical standards: FCC Part15 (15.247) , Subpart C Standard Section Test Item Judgment Remark 15.207 Conducted Emission PASS 15.247 (c) Antenna conducted Spurious EmissionPASS 15.247 (a)(2) 6dB Bandwidth PASS 15.247 (b) Peak Output Power PASS 15.247 (c) Radiated Spurious Emission PASS 15.247 (d) Power Spectral Density PASS 15.203 Antenna Requirement PASS 1.1307 1.1310 2.1091 2.1093 RF Exposure Compliance PASS NOTE: (1)” N/A” denotes test is not applicable in this Test Report Report No.: NEI-FCCP-1-0711C138 Page 7 of 57 Neutron Engineering Inc. 2.1 TEST FACILITY The test facilities used to collect the test data in this report is C01/OS02 at the location of No.132-1, Lane 329, Sec. 2, Palain Road, Shijr City, Taipei, Taiwan. Neutron's test firm number is 95335 2.2 MEASUREMENT UNCERTAINTY The reported uncertainty of measurement y ± U，where expended uncertainty U is based on a standard uncertainty multiplied by a coverage factor of k=2，providing a level of confidence of approximately 95 %。 A. Conducted Measurement : Test Site Method M…

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Report No.: NEI-FCCP-1-0711C138 Page 55 of 57 Neutron Engineering Inc. Conducted Measurement Photos Report No.: NEI-FCCP-1-0711C138 Page 55 of 57 Neutron Engineering Inc. Conducted Measurement Photos Report No.: NEI-FCCP-1-0711C138 Page 56 of 57 Neutron Engineering Inc. Radiated Measurement Photos Report No.: NEI-FCCP-1-0711C138 Page 56 of 57 Neutron Engineering Inc. Radiated Measurement Photos Report No.: NEI-FCCP-1-0711C138 Page 57 of 57 Neutron Engineering Inc. Radiated Measurement Photos