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MultiPoint Newsletter - October 2015

Determining Worst-Case Configuration with “2 dB Rule”

Question: Will the FCC continue to accept the use of the “2 dB rule” in ANSI C63.4-2003 for determining worst-case equipment configuration, and demonstrating compliance with 47CFR§15.31(i)?

Answer: Yes, the FCC will continue to accept the use of the “2 dB rule” in ANSI C63.4-2003 for demonstrating compliance with the requirement in .

斗地主达人ANSI C63.4-2009 includes a revised procedure, however feedback from manufacturers and test laboratories indicated the new procedure would substantially increase the cost of testing so the FCC agreed to continue to accept the “2 dB rule” in ANSI C63.4-2003, until further revisions are adopted.

Please note that the test report must include the rationale for the equipment configuration and loading of ports。

As a reminder, the “2 dB rule” in ANSI C63.4-2003, Section 6.1.3 states:

“Interconnecting cabling or wiring shall be connected to one of each type of functional port of the EUT, and each cable or wire shall be terminated in a device typical of actual usage. Where there are multiple ports all of the same type, additional connecting cables or wires shall be added to the EUT to determine the effect these cables or wires have on both radiated and conducted emissions from the EUT. The number of additional cables or wires should be limited to the condition where the addition of another cable or wire does not significantly affect the emission level, i.e., varies less than 2 dB, provided, of course, that the EUT remains compliant. These additional cables or wires need not be terminated.

Note: Normally, the loading of similar connectors, terminals, or ports is limited by the following:

  1. Availability of multiple loads (for large systems)
  2. Reasonableness of multiple loads representing a typical installation.

Additional ports on support or interfacing units or simulators, other than those associated with the EUT or the minimum system required by Section 11.2, for ITE, need not be cabled or used during testing.”


General Mobile Radio Service (GMRS)

Question: Where are GMRS radios used, and can their messages be encoded or scrambled?

Answer: General Mobile Radios (GMRS) are handheld, portable devices with channels around 462 MHz and 467 MHz used for short-distance, two-way communication, much like walkie-talkies. In the United States, a valid FCC license is required for an adult individual and his/her immediate family members. The licensee and his/her immediate family members are allowed to communicate amongst each other personally or for business purposes, however the license does not extend beyond the immediate family, and certainly does not include employees of the licensee. Licenses are valid for 5 years and can be renewed.

Though voice scrambling by a GMRS device is a method of encoding a message so that the message's meaning (content) is hidden from operators of certain other GMRS devices, states that an operator cannot communicate "coded/encrypted messages or messages with hidden meanings。" Furthermore, states that all messages must be in plain language (without codes or hidden meaning)。

Therefore, it is prohibited to use any technique such as scrambling, encryption, inversion, or masking that hides, obscures, or confuses the voice message so that it cannot be readily understood by any listener with a GMRS device designed to receive the transmitted emission type.


Module Colocation

Question: Frequently, our customers want to place two certified modules on the same host PCB, though the individual module grants do not permit colocation. Is there a way we can obtain FCC and IC certification for an end product with this configuration?

Answer: In these cases, we recommend a Class II permissive change to the grant for one of the modules, in order to allow colocation with the other module in your specific host. Intentional emissions with both transmitters transmitting simultaneously should be tested, with particular attention paid to any intermodulation products or increased spurious emissions.

Unintentional emissions to FCC Part 15B/ICES-003 should also be performed for your host。

If your application is mobile or fixed (typical use >20 cm from users), an RF exposure MPE calculation should be done considering both transmitters transmitting simultaneously. If it is a portable application, SAR testing may have to be performed depending on the combined output power of both transmitters.


Pre-Approval Guidance

Question: We believe that our new product falls into one of the three classes of certification applications subject to a Pre-Approval Guidance (PAG) review. How should we proceed?

Answer: You should review in detail as soon as possible the updated version of , released October 16, 2015, for details on requirements and procedures so that your certification won’t be unnecessarily delayed. The FCC also released an updated version of , the list of current devices that are subject to the Pre-Approval Guidance procedure.


Standards Updates

EU: New CENELEC Standards Recently Released

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

  • - 10/9/2015 - Primary batteries - Part 1: General
  • - 10/9/2015 - Electrostatics - Part 5-3: Protection of electronic devices from electrostatic phenomena - Properties and requirements classification for packaging intended for electrostatic discharge sensitive devices
  • - 10/16/2015 - Photobiological safety of lamps and lamp systems - Part 5: Image projectors
  • - 10/23/2015 - Household and similar electrical appliances - Safety - Part 2-25: Particular requirements for microwave ovens, including combination microwave ovens
  • - 10/23/2015 - Household and similar electrical appliances - Safety - Part 2-54: Particular requirements for surface-cleaning appliances for household use employing liquids or steam
  • - 10/23/2015 - Medical electrical equipment - Part 2-5: Particular requirements for the basic safety and essential performance of ultrasonic physiotherapy equipment
  • - 10/23/2015 - Medical electrical equipment - Part 2-18: Particular requirements for the basic safety and essential performance of endoscopic equipment
  • - 10/23/2015 - Medical electrical equipment - Part 2-49: Particular requirements for the basic safety and essential performance of multifunction patient monitoring equipment
  • - 10/23/2015 - Medical electrical equipment - Dosimetric instruments as used in brachytherapy - Part 1: Instruments based on well-type ionization chambers

See for additional information.

EU: New ETSI Standards Recently Released

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

  • - (September 2015) - RadioDNS Hybrid Radio; Hybrid lookup for radio services
  • - (October 2015) - Electromagnetic compatibility and Radio spectrum Matters (ERM); Base Stations (BS), Repeaters and User Equipment (UE) for IMT-2000 Third-Generation cellular networks; Part 10: Harmonised Standard for IMT-2000, FDMA/TDMA (DECT) covering the essential requirements of article 3.2 of the Directive 2014/53/EU
  • - (October 2015) - Electromagnetic compatibility and Radio spectrum Matters (ERM); Conformance testing for Mode 1 of the digital Private Mobile Radio (dPMRTM); Part 3: Interoperability Test Suite Structure and Test Purposes (TSS&TP) specification

See for additional information.

EU: New IEC Standards Recently Released

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

  • - (9/28/2015) - Explosive atmospheres - Part 30-1: Electrical resistance trace heating - General and testing requirements
  • - (9/28/2015) - Explosive atmospheres - Part 30-2: Electrical resistance trace heating - Application guide for design, installation and maintenance
  • - (10/2/2015) - Electroacoustics - Hearing aids - Part 13: Electromagnetic compatibility (EMC)
  • - (10/13/2015) - Household and similar electrical appliances - Safety - Part 2-75: Particular requirements for commercial dispensing appliances and vending machines
  • - (10/13/2015) - Amendment 1 - Household and similar electrical appliances - Safety - Part 2-75: Particular requirements for commercial dispensing appliances and vending machines
  • - (9/23/2015) - Low-voltage electrical installations - Part 4-44: Protection for safety - Protection against voltage disturbances and electromagnetic disturbances
  • - (9/23/2015) - Amendment 1 - Low-voltage electrical installations - Part 4-44: Protection for safety - Protection against voltage disturbances and electromagnetic disturbances
  • - (9/29/2015) - Medical electrical equipment - Part 2-8: Particular requirements for the basic safety and essential performance of therapeutic X-ray equipment operating in the range 10 kV to 1 MV
  • - (9/29/2015) - Amendment 1 - Medical electrical equipment - Part 2-8: Particular requirements for the basic safety and essential performance of therapeutic X-ray equipment operating in the range 10 kV to 1 MV
  • - (10/9/2015) - Safety of laser products - Part 17: Safety aspects for use of passive optical components and optical cables in high power optical fibre communication systems
  • - (10/9/2015) - Information technology equipment - Safety - Part 22: Equipment to be installed outdoors
  • - (10/2/2015) - Protection against electric shock - Common aspects for installation and equipment
  • - (10/22/2015) - Photovoltaic (PV) array - On-site measurement of current-voltage characteristics
  • - (10/9/2015) - Amendment 1 - Fluorescent induction lamps - Safety specifications
  • - (10/7/2015) - LEDsi lamps for general lighting services with supply voltages not exceeding 50 V a.c. r.m.s. or 120 V ripple free d.c. - Safety specifications
  • - (10/9/2015) - Audio, video and information technology equipment - Routine electrical safety testing in production
  • - (10/5/2015) - Factory of the future

See for additional information。

FCC - Permissive Change Policy & Guidance Update

On October 16, 2015, the FCC released (guidance for permissive changes) and , (answers to frequently asked questions)。 The following changes are included in 178919 D01 Permissive Change Policy in V06:

  • Updates as a result of the rules adopted under FCC 14-208.
  • Consolidated permissive changes involving transmitter amplifiers.
  • Footnote added at minor circuitry changes subclause.
  • Numbering and format updated consistent with other recent KDB publications.
  • Selected emissions, power and equipment class provisions updated in the Software Changes clause, along with cross-reference to wireless microphones new rules.
  • Corrected units for power density in Part 15 antennas clause.
  • Addition of citation to KDB Publication 178919 D02.

FCC - Updated Pre-Approval Guidance List and Procedures

On October 16, 2015, the FCC released (current list of devices that are subject to the Pre-Approval Guidance procedure) and (pre-approval guidance procedures)。

EU – New Version of ERC/REC 70-03 (Use of SRDs)

On September 30, 2015, the EU Electronic Communications Committee issued a new version of relating to the Use of Short Range Devices (SRDs) with updated recommendations providing the following:

  • Implementation status within the EU/EEA-EFTA countries (Appendix 1)
  • Implementation status within the CEPT countries not being EU/EEA-EFTA (Appendix 1)
  • National restrictions within the CEPT countries (Appendix 3)

Dominican Republic - New Type Approval Filing Requirements

斗地主达人We were recently advised that the Dominican Republic Regulator, Instituto Dominicano de las Telecomunicaciones (INDOTEL), is now requiring Type Approval for all radio devices. Previously, FCC-approved devices were acceptable and did not require additional Type Approval filing. However, INDOTEL has now advised this is no longer the case, and National Type Approval is required (via paperwork filing FCC-Approved devices).

Tonga - New Type Approval Requirements

We were recently advised that the Tonga Authority Ministry of Information & Communications (MIC) is now enforcing new Type Approval rules。 All radio equipment must be type approved by MIC prior to being imported and marketed for use in Tonga。 This is a paperwork filing effort only and FCC or CE test reports are accepted。

India – Delicensing of Frequency Bands

On September 16, 2015, India’s Ministry of Communications and Information Technology announced the following frequency bands are now delicensed in India. Equipment operating in these frequency bands can now be Type Approved in India and no license shall be required.

Devices Frequency Band Maximum Effective Radiated Power Limits
Very Low Power Radio Frequency Devices / Wireless microphones 36 to 38 MHz 50 mW; maximum audio channel bandwidth of 200 kHz
Very Low Power Radio Frequency Devices / Equipment including Radio Frequency Identification Devices 433 to 434.79 MHz 10 mW (e.r.p) with maximum channel bandwidth of 10kHz (Duty cycle limit 10%)
Very Low Power Radio Frequency Devices / Equipment for Inductive Applications 302 to 351 kHz -15 dBμA/m (H-Field strength) at 10 meters
Very Low Power Radio Frequency Devices / Equipment for Short Range Radar Systems 76 to 77 GHz 5 W (37 dBm)

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