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MultiPoint Newsletter - November 2011 Issue

Dear Colleague,

We have provided typical questions and answers that represent in most cases technical opinions with justification in FCC, IC and CE requirements. The particulars of the product for certification must be considered with respect to the applicability of these questions and answers. We hope you find our update valuable and welcome your feedback if you have any special needs or questions. Call us at 703.689.0368 for your testing requirements. You can view archived issues of MultiPoint at our website.


FCC MIMO Requirements

Question: We manufacture wireless devices with multiple inputs and multiple outputs. How are measurements made on a device that employs a single transmitter with multiple outputs in the same band?

Answer: The attached document, , provides guidance for the measurement of conducted output emissions of devices that employ a single transmitter with multiple outputs in the same band. This guidance applies to both licensed and unlicensed devices whenever the FCC rules call for conducted output measurements, and guidance is provided for in-band, out-of-band, and spurious emissions measurements. The guidance applies to devices that transmit on multiple antennas simultaneously in the same band through a coordinated process. Examples include, but are not limited to, devices employing beam-forming or multiple-input and multiple-output (MIMO). The attached document, provides additional guidance for the measurement of both conducted output emissions and radiated emissions from devices that have two outputs driving linearly polarized antennas that are cross-polarized with respect to each other.


FCC WCS Requirements

Question: In the October Multipoint, you responded to a question about the peak-to-average power ratio (PAPR) requirements for a Long Term Evolution (LTE) mobile device operating in the 700 and 800 MHz band (Band 13). We are designing a similar LTE device. What is the general procedure required to comply with FCC Part 27 Wideband Communications Services (WCS) for devices greater than 1 MHz bandwidth?

Answer: All WCS devices are subject to the FCC’s “Permit But Ask” (PBA) policy whereby a Telecommunication Certification Body (TCB) can certify the device after consultation with the FCC regarding the device functionality, operations and/or EMC test data. If this initial review indicates compliance, the FCC will then permit the TCB to approve the device. Currently the FCC does not have a standardized measurement procedure for WCS devices, although the ANSI C63.26 Task Group is currently developing a measurement procedure that will be proposed to the FCC. The FCC currently accepts the following:

  1. To determine power, 971168 D01 Power Meas License Digital Systems v01 provides guidance and measurement methods.
  2. To determine the Effective Radiated Power (ERP)/Effective Radiated Isotropic Power (EIRP) of the RF Transmitting System, provides guidance and measurement methods.

At a minimum, a WCS PBA filing must include:

  1. A comprehensive operational description, including the type of modulation/access technology utilized (i.e. WiMax, LTE, etc.).
    1. Complete power measurement test description and corresponding data.
    2. The EIRP levels determined from the measured power data, including calculations and assumptions, demonstrating compliance with the applicable limits.
  2. The maximum duty cycle and how it was determined and verified:
    1. Duty cycle defined in the WCS Report & Order as the percentage of a transmission frame that a WCS user device uses to transmit uplink information to the base station (i.e. the “on time” of a WCS user device transmitter in a given transmission frame).
    2. A description of the transmit power control mechanism where applicable.
  3. Fundamental emission measurements:
    1. The proper way to characterize fundamental emission power for WCS (and other) digital modulation techniques is in terms of average/RMS.
      1. Most relevant FCC power limits are specified in terms of average power.
    2. Test labs prefer to use peak detector due to the relative simplicity and speed of the measurement. In this instance, the FCC’s primary concern is that compliance to the stated emission limit must be demonstrated as follows:
      1. You must provide adequate demonstration of compliance for peak detected levels that comply with specified average limit.
      2. Reports must clearly state when the measured power is peak-detected.
    3. The FCC is also considering an additional requirement to report average power when the measured power is peak detected.
  4. Additional information related to RF exposure considerations may also be required.

IC SAR Requirements

Question: We were recently informed by our TCB that there is modest but important difference now between FCC and Industry Canada (IC) Specific Absorption Rate measurement requirements. Can you explain?

Answer: Industry Canada now requires the following for SAR measurements:

  1. Dielectric properties of Tissue Simulating Liquids (TSL) used for the system checks and SAR compliance evaluations must be verified using the target values listed in the most recent versions of RSS-102, IEEE 1528 and/or IEC 62209.
  2. The target values must not be obtained from dipole calibration certificates or from any other documents not referenced in the specified standards above.
  3. The dielectric properties of the TSL at the middle channels of each frequency band tested must be provided for the device tested along with a list of dielectric parameters for the low and high frequency channels with the RF Exposure Brief for each band of operation as specified in RSS 102, Issue 4 Annex E.
  4. These values should match the supporting SAR test plots.
  5. SAR evaluations measurement must be made in accordance with the latest version of IEEE 1528 and/or IEC 62209-2.

The FCC on the other hand only requires the following:

  1. The Tissue Simulating Liquids (TSL) must be verified using the target values obtained from the dipole calibration certificates, not from the standards.
  2. The FCC does not require dielectric properties of the TSL at three channels.
  3. The FCC only accepts testing to IEEE 1528 and OET 65C, not IEC 62209-2.

Hotspot External Antenna Requirement

Question: We are designing a WiFi Docking Cradle (WDC) that contains separate antennas. The WDC uses a mini USB connector to mate with a certified mobile hotspot device so that when the WDC docks with the mobile hotspot device, the internal antenna of the mobile hotspot device is disabled and only the WDC antenna operates. What should we be aware of when certifying our device?

Answer: 斗地主达人In testing and certifying your device you should be aware of the following:

  1. There are two possible paths to certification. If you can get permission from the grantee of the certified mobile device, you can perform radiated spurious noise band-edge measurements and apply for a FCC Class II permissive change in which the WDC is added to the list of antennas that you can use with the mobile hot spot device as long as it does not contain its own internal amplifier.
  2. If the mobile hotspot device is battery-operated, you would need to send an inquiry to the FCC to determine the RF category of the mobile hotspot device docked with the WDC. The worst case would be that the FCC may determine that the RF category is portable, and that SAR measurements are required.
  3. You can forgo the Class II Permissive change route and instead apply for a new FCC ID for your device as a system, a mobile hotspot/WDC. In this case, all testing under would have to performed, including RF hazard evaluation for the system as a mobile or portable (battery operated) device as applicable.

Standards Updates

EU: NEW CENELEC STANDARDS RECENTLY RELEASED

This is a shortened list of the CENELEC standards published during the past month:

  • - (10/21/2011) - Semiconductor devices - Micro-electromechanical devices - Part 12: Bending fatigue testing method of thin film materials using resonant vibration of MEMS structures
  • - (10/28/2011) - Energy management systems - Requirements with guidance for use
  • - (10/28/2011) - Guidance for production, testing and diagnostics of polymer insulators with respect to brittle fracture of core materials
  • - (11/4/2011) - Fire hazard testing - Part 11-4: Test flames - 50 W flame - Apparatus and confirmational test method
  • - (11/(11/2011) - Connectors for electronic equipment - Part 7: Detail specification for 8-way, unshielded, free and fixed connectors
  • - (11/18/2011) - Conduit systems for cable management - Part 25: Particular requirements - Conduit fixing devices
  • - (11/18/2011) - Digital audio - Interface for non-linear PCM encoded audio bitstreams applying IEC 60958 - Part 1: General
  • - (11/18/2011) - Energy performance of lamp controlgear - Part 1: Controlgear for fluorescent lamps - Method of measurement to determine the total input power of controlgear circuits and the efficiency of the controlgear

See CENELEC for additional information.

EU: NEW ETSI STANDARDS RECENTLY RELEASED

This is a shortened list of the new ETSI standards published during the past month:

  • - (October 2011) - Universal Mobile Telecommunications System (UMTS); Base station (BS) and repeater electromagnetic compatibility (EMC) (3GPP TS 25.113 version 10.2.0 Release 10)
  • - (November 2011) - Universal Mobile Telecommunications System (UMTS); Electromagnetic compatibility (EMC) requirements for mobile terminals and ancillary equipment (3GPP TS 34.124 version 10.2.0 Release 10)
  • - (November 2011) - LTE; Evolved Universal Terrestrial Radio Access (E-UTRA); Base Station (BS) and repeater ElectroMagnetic Compatibility (EMC) (3GPP TS 36.113 version 10.4.0 Release 10)
  • - (November 2011) - LTE; Evolved Universal Terrestrial Radio Access (E-UTRA); Electromagnetic compatibility (EMC) requirements for mobile terminals and ancillary equipment (3GPP TS 36.124 version 10.3.0 Release 10)
  • - (November 2011) - Digital cellular telecommunications system (Phase 2+); Universal Mobile Telecommunications System (UMTS); LTE; E-UTRA, UTRA and GSM/EDGE; Multi-Standard Radio (MSR) Base Station (BS) Electromagnetic Compatibility (EMC) (3GPP TS 37.113 version 10.3.0 Release 10)
  • - (November 2011) - lectromagnetic compatibility and Radio spectrum Matters (ERM); Radio Frequency Identification Equipment operating in the band 865 MHz to 868 MHz with power levels up to 2 W; Part 1: Technical requirements and methods of measurement
  • - (November 2011) - Electromagnetic compatibility and Radio spectrum Matters (ERM); Radio Frequency Identification Equipment operating in the band 865 MHz to 868 MHz with power levels up to 2 W; Part 2: Harmonized EN covering the essential requirements of article 3.2 of the R&TTE Directive
  • - (November 2011) - VHF air-ground Digital Link (VDL) Mode 2; Technical characteristics and methods of measurement for ground-based equipment; Part 3: Harmonized EN covering the essential requirements of article 3.2 of the R&TTE Directive
  • - (November 2011) - Electromagnetic compatibility and Radio spectrum Matters (ERM); VHF radiotelephone equipment for general communications and associated equipment for Class "D" Digital Selective Calling (DSC); Part 1: Technical characteristics and methods of measurement
  • - (November 2011) - Electromagnetic compatibility and Radio spectrum Matters (ERM); ElectroMagnetic Compatibility (EMC) standard for radio equipment and services; Part 23: Specific conditions for IMT-2000 CDMA, Direct Spread (UTRA and E-UTRA) Base Station (BS) radio, repeater and ancillary equipment
  • - (November 2011) - Broadband Radio Access Networks (BRAN); 5 GHz high performance RLAN; Harmonized EN covering the essential requirements of article 3.2 of the R&TTE Directive
  • - (November 2011) - Electromagnetic compatibility and Radio spectrum Matters (ERM); Portable Very High Frequency (VHF) radiotelephone equipment for the maritime mobile service operating in the VHF bands with integrated handheld class D DSC; Part 1: Technical characteristics and methods of measurement

See 斗地主达人ETSI website for additional information.

EU: NEW IEC STANDARDS RECENTLY RELEASED

This is a shortened list of the new IEC standards published during the past month:

  • - (9/29/2011) - Medical electrical equipment - Part 2-31: Particular requirements for the basic safety and essential performance of external cardiac pacemakers with internal power source
  • - (10/19/2011) - Medical electrical equipment - Part 2-25: Particular requirements for the basic safety and essential performance of electrocardiographs
  • - (10/19/2011) - Safety of laser products - Part 13: Measurements for classification of laser products
  • - (10/20/2011) - Electromagnetic compatibility (EMC) - Part 3-14: Assessment of emission limits for harmonics, interharmonics, voltage fluctuations and unbalance for the connection of disturbing installations to LV power systems
  • - (10/24/2011) - Corrigendum 1 - Insulation coordination for equipment within low-voltage systems - Part 2-1: Application guide - Explanation of the application of the IEC 60664 series, dimensioning examples and dielectric testing
  • - (10/31/2011) - Safety of machinery - Electrical equipment of machines - ALL PARTS
  • - (11/8/2011) - Mechanical structures for electronic equipment - Tests for IEC 60917 and IEC 60297 series - Part 1: Environmental requirements, test set-up and safety aspects for cabinets, racks, subracks and chassis under indoor conditions
  • - (11/14/2011) - Amendment 1 - Adjustable speed electrical power drive systems - Part 3: EMC requirements and specific test methods
  • - (11/14/2011) - Amendment 1 - Photovoltaic (PV) module safety qualification - Part 1: Requirements for construction
  • - (11/14/2011) - Amendment 1 - Photovoltaic (PV) module safety qualification - Part 2: Requirements for testing
  • - (11/17/2011) - Mechanical structures for electronic equipment - Outdoor enclosures - Part 3: Environmental requirements, tests and safety aspects

See for additional information。

US – FCC Release Tentative Agenda for Open Meeting on 11/30/2011

斗地主达人FCC Chairman Julius Genachowski announced that the following items will be on the tentative agenda for the next open meeting scheduled for Wednesday, November 30, 2011:

  • Additional Spectrum for Medical Radiocommunication Devices: The Commission will consider a Report and Order that allocates spectrum in the 413-457 MHz band and adopts service and technical rules to allow the use of new types of implanted medical devices that use functional electric stimulation to, among other things, restore sensation, mobility, and function to paralyzed limbs and organs.
  • Presentation on Commission Efforts to Address Barriers to Broadband Adoption: Commission staff will provide a presentation on the Commission’s recent broadband adoption efforts, including a first-of-its-kind national effort to address the barriers to broadband adoption, digital literacy and the employment skills gap.

The Open Meeting is scheduled to commence at 10:30 a.m. in Room TW-C305, at 445 12th Street, S.W., Washington, D.C. The event will be shown live at FCC.gov/live.

FCC exploring short-term & long-term 911-emergency system

斗地主达人The FCC is actively exploring short-and long-term options for expanding the capabilities of the nation’s 911-emergency communications system, including the eventual delivery of photos, videos and data using the 911 network. A Notice of Proposed Rulemaking issued in September 2011 calls for comments on various plans and approaches that would enable consumers to send text messages via the 911 network, and requests comments on the long-term development of a multi-media-capable 911 technology that would allow consumers to communicate with 911 operators in the same way they communicate with others on a daily basis. This would be especially beneficial for people with disabilities.

The FCC feels that an enhanced 911 system could be developed with technologies already commercially available, which would speed deployment and minimize total costs, while significantly improving emergency response, thus saving more lives and reducing property damage. Read here for further information on FCC exploring short-term & long-term 911-emergency system.

Vietnam – Changes to Test Report Acceptance

Vietnam’s Ministry of Information and Communications recently announced its new regulations on Type Approval are to be released in December 2011 and will come into effect January 1, 2012.

The new regulations will have the following requirements for test reports:

  • Test reports from test laboratories that have been accredited and listed on the ICTQC site will no longer be accepted.
  • Only test reports from Vietnamese test laboratories and test laboratories on the MRA list will be accepted.
  • The MRA list is a list of foreign test laboratories recognized by the Vietnamese Authority under a Mutual Recognition Agreement.

Samoa – Type Approval Requirements

On September 23, 2011, Samoa’s Office of the Regulator issued Order of the Regulator No。 2011/02。 The official Order was provided as a reminder to all manufacturers and suppliers of telecommunications equipment that any telecommunications equipment entering Samoa, which is intended to be attached or connected to a telecommunications network and/or used to provide telecommunications services, must first obtain Type Approval from the Office of the Regulator, click to view。

Taiwan – Revised Standards for Television Sets and Set-top Boxes

Taiwan’s BSMI (Bureau of Standards, Metrology and Inspection, M.O.E.A.) recently announced its plans to revise standards for television set and set-top box products effective January 1, 2012 as detailed below:

  • Safety: multimedia products will be subject to CNS 14336-1(2010)
  • Digital Function: television sets, multimedia products, and set-tops will be subject to Technical Specification for Digital Terrestrial Television Receivers (2011)

International Battery Regulations

In late June 2011, during the latest IECEE Certification Management Committee (CMC) meeting in Istanbul, the compliance criteria for batteries used in ITE (IEC60950-1) and A/V (IEC60065) products was discussed, based on input from IEC TC 108 (technical committee responsible). TC 108 subsequently provided the following update and action plan:

A joint working group consisting of members from IEC TC 108 (IT & A/V products) and IEC SC 21A (batteries) was established to develop meaningful requirements for batteries used in high tech products covered under the scope of IEC TC 108.

斗地主达人This joint working group has been working closely to advance and harmonize the development of battery requirements for the next editions of IEC 62133, IEC 62368-1, IEC 60950-1, and IEC 60065.

All three of the above mentioned TC 108 standards (IEC 62368-1, IEC 60950-1, and IEC 60065) will contain normative references to the next edition of IEC 62133, along with normative references to other appropriate standards dealing with safety of cells and battery packs.

As a result of a number of accomplishments, both TC 108 and SC21A are on track to meet the goal of publishing the next edition of the relevant standards by the end of 2012。

Following this plan, after the next editions of the standards are published, as indicated above, the IECEE CB Scheme will most likely be announcing a transition period for batteries used in ITE and A/V products to come into compliance with the next edition of the IEC standard for batteries。 Currently, the requirements of IEC 62133 are not mandatory for batteries used in ITE and A/V products。

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