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MultiPoint Newsletter - August 2015

Remote Firmware Updates

Question: We would like to remotely update the firmware on our deployed FCC-certified 2.4 GHz Wi-Fi router in order to change the conducted output power. Does the FCC allow this?

Answer: No, the FCC does not allow remote firmware update changes to the basic frequency determining and stabilizing circuitry (including clock and data rates), frequency multiplication stages, basic modulator circuit, maximum conducted power nor field strength ratings on deployed FCC-certified devices.

Any change in power would automatically require a new FCC certification application to obtain a new FCC ID. In this instance, you could certify your higher-power router and then have your customers send their routers to you for the firmware update and a new FCC ID label.

斗地主达人The permissive change rules in describe the modifications that may be made to an RF device without filing for a new equipment authorization。 Additionally, it defines the three different types of permissive changes that are allowed, and identify when a permissive change filing is required。


GTEM Cell Data Acceptability

Question: We have a GTEM (Gigahertz Transverse Electromagnetic) cell and would like to know if we can submit this data in support of FCC equipment authorizations.

Answer: Under limited conditions, the FCC will accept GTEM cell data. In Public Notice GTEM PN 40830 released December 2, 1993, the FCC agreed to accept radiated emissions test data under limited conditions for Part 15 Equipment Authorization purposes. In Public Notice GTEM PN 54796 released July 12, 1995, acceptance of GTEM cells under limited conditions was expanded to include other rule parts.

ANSI C63。4-2014 Annex F - Test procedure for emissions testing in TEM waveguides (30 MHz to 1 GHz) and Annex G - Sample OATS to TEM waveguide validation spreadsheet, provide additional guidance about test methods for test facilities using GTEM cells and TEM waveguides, and about data reporting to the FCC。


ERP vs EIRP

Question: Where can I find an explanation of ERP and EIRP, and related guidance on FCC certifications?

Answer: ANSI C63.10-2013 - Annex G - Basic relationships among field strength, power, effective radiated power and equivalent isotropically radiated power, and FCC KDB 412172 D01 Determining ERP and EIRP v01r0, provide clear explanations and guidance.

As you know, FCC rules and regulations specify power and/or emission limits in terms of the ERP or EIRP of the transmitter system (transmitter and its radiating antenna and cabling/connectors). Simply put, ERP and EIRP are defined as the product of the power supplied to the antenna and the antenna gain, and power and gain are represented in linear terms. For ERP, the antenna gain is expressed relative to an ideal half-wave dipole antenna, and for EIRP, the antenna gain is expressed relative to an ideal (theoretical) isotropic antenna.


UWB Compliance Measurements

Question: Can we use a spectrum analyzer to perform UWB (ultra wideband) device compliance measurements?

Answer: The FCC would allow the use of a spectrum analyzer with a quasi-peak detector for measuring UWB emissions below 960 MHz to verify compliance with the emissions limits in that portion of the spectrum. Above 960 MHz, an analyzer with a true RMS (power averaging) detector is preferred for measuring UWB emissions power measurement.

If an RMS detector is not available, the following alternative method can be used to measure the true RMS level using a spectrum analyzer without an RMS detector. This requires a multiple step technique that begins with a peak detection scan of the UWB spectrum using a resolution bandwidth (RBW) of 1 MHz and a video bandwidth (VBW) of no less than 1 MHz. The resulting trace is to be used to identify the frequency and bandwidth of the five highest peaks in the spectrum.

The spectrum analyzer is then to be placed in a “zero span” mode, with a RBW of 1 MHz, a VBW equal to or greater than 1 MHz, and a selected detector that does not distort or smooth the instantaneous signal levels (“sample” detector).

With these settings, a minimum of 10 independent, instantaneous points representing the highest amplitude readings are to be obtained during the time that a pulse is present in each 1 MHz frequency bin across the bandwidth of each of the five highest peaks previously identified.

斗地主达人The data obtained from these measurements must then be post-processed to determine the true RMS average power levels. The post-processing of the data can be performed manually or with the aid of appropriate software.

Some UWB applications (indoor UWB devices authorized under ) will require a low-noise preamplifier to measure emissions to the levels necessary to determine compliance with the limits specified in the frequency band 960 MHz to 1610 MHz.

If the radiated measurements are not performed in an anechoic chamber, then the use of a low-noise preamplifier may also necessitate that a preselect filter be inserted ahead of the low-noise preamplifier to prevent saturation from strong ambient RF signals.

Note: When the pulse repetition frequency (PRF) of the device under test is less than the 1 MHz RBW, a significant number of samples may be required to ensure that a minimum of 10 samples with the pulse present are obtained.


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:

  • - (7/3/2015) - Fire hazard testing - Part 11-20: Test flames - 500 W flame test methods
  • - (7/8/2015) - Conformity assessment - Requirements for bodies providing audit and certification of management systems - Part 1: Requirements (ISO/IEC 17021-1:2015)
  • - (7/24/2015) - Safety requirements for electrical equipment for measurement, control and laboratory use - Part 031: Safety requirements for hand-held probe assemblies for electrical measurement and test
  • - (8/7/2015) - Railway applications - Rolling stock - Electric equipment in trolley buses - Safety requirements and current collection systems
  • - (8/7/2015) - Electroacoustics - Hearing aids - Part 0: Measurement of the performance characteristics of hearing aids
  • - (8/7/2015) - Medical electrical equipment - Part 2-37: Particular requirements for the basic safety and essential performance of ultrasonic medical diagnostic and monitoring equipment
  • - (8/7/2015) - Arc welding equipment - Part 10: Electromagnetic compatibility (EMC) requirements
  • - (8/21/2015) - Electric motor-operated hand-held tools, transportable tools and lawn and garden machinery - Safety - Part 1: General requirements

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:

  •  - (July 2015) - IMT cellular networks; Harmonized EN covering the essential requirements of article 3.2 of the R&TTE Directive; Part 3: CDMA Direct Spread (UTRA FDD) Base Stations (BS)
  • - (July 2015) - VHF air-ground Digital Link (VDL) Mode 4 radio equipment; Technical characteristics and methods of measurement for ground-based equipment; Part 5: Harmonized EN covering the essential requirements of article 3.2 of the R&TTE Directive
  •  - (July 2015) - Satellite Earth Stations and Systems (SES); Harmonised EN for Earth Stations on Mobile Platforms (ESOMP) transmitting towards satellites in non-geostationary orbit in the 27,5 GHz to 29,1 GHz and 29,5 GHz to 30,0 GHz frequency bands covering the essential requirements of article 3.2 of the R&TTE Directive
  •  - (July 2015) - IMT cellular networks; Harmonised EN covering the essential requirements of article 3.2 of the R&TTE Directive; Part 14: Evolved Universal Terrestrial Radio Access (E-UTRA) Base Stations (BS)

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:

  • - (7/9/2015) - Amendment 1 - Household and similar electrical appliances - Safety - Part 2-3: Particular requirements for electric irons
  • - (7/10/2015) - Specification for radio disturbance and immunity measuring apparatus and methods - Part 1-1: Radio disturbance and immunity measuring apparatus - Measuring apparatus
  • - (7/22/2015) - Fixed capacitors for use in electronic equipment - Part 20: Sectional specification - Fixed metallized polyphenylene sulfide film dielectric surface mount d.c. capacitors
  • - (7/24/2015) - Metallic communication cable test methods; Part 4-10: Electromagnetic compatibility (EMC); Transfer impedance and screening attenuation of feed-throughs and electromagnetic gaskets; Double coaxial test method
  • - (7/28/2015) - Primary batteries - Part 1: General
  • - (7/31/2015) - Electromagnetic compatibility (EMC); Part 4-24: Testing and measurement techniques; Test methods for protective devices for HEMP conducted disturbance
  • - (8/5/2015) - Ferrite cores - Guidelines on the limits of surface irregularities - Part 8: PQ-cores
  • - (8/5/2015) - Environmental conditions - Vibration and shock of electotechnical equipment - Part 5: Equipment during storage and handling
  • - (8/14/2015) - Integrated circuits – Measurement of electromagnetic immunity; Part 1: General conditions and definitions
  • - (8/12/2015) - Passive filter units for electromagnetic interference suppression - Part 3: Passive filter units for which safety tests are appropriate
  • - (8/21/2015) - Electromagnetic compatibility (EMC) - Part 6-5: Generic standards - Immunity for equipment used in power station and substation environment
  • - (8/24/2015) - Electromagnetic compatibility (EMC) - Part 4-38: Testing and measurement techniques - Test, verification and calibration protocol for voltage fluctuation and flicker compliance test systems
  •  - (8/24/2015) - Electrical and electronic installations in ships - Electromagnetic compatibility (EMC) - Ships with a metallic hull

See for additional information。

FCC - Website Unavailable from 9/2/2015 through 9/7/2015

On August 20, 2015, the FCC released stating that significant website upgrades and improvements will begin Wednesday, September 2, 2015 at 6 p.m. EDT and are scheduled to be completed by Tuesday, September 8, 2015 by 8 a.m. EDT. During this time, the TCB and KDB websites, among others, will not be available, and TCBs will not be able to issue grants, upload information, or access the electronic filing systems. The FCC site will remain available during this time, but with reduced content and limited search capabilities. The FCC will remain open, and telephones will be working, however voicemail and email will not.

FCC & Industry Canada - Coordination of 600 MHz Band

The FCC recently announced an agreement with Canada to harmonize spectrum use along the US-Canada border in anticipation of the planned 2016 US auction of 600 MHz band frequencies. The Statement of Intent agreed upon with for repurposing TV spectrum for mobile broadband on both sides of the border. The agreement follows a decision by the Canadian government to allow mobile services in the 600 MHz band, using the same specifications as adopted last year by the FCC. Industry Canada and the FCC will jointly repack TV stations on the same timetable using the frequencies and freeing up spectrum for mobile services. The FCC said the agreement will significantly reduce potential interference for future mobile services along the border. The US reached a similar agreement with Mexico earlier this year.

FCC– New Rules for Wireless Microphones

On August 5, 2015, the to address the long-term needs of wireless microphone users by providing for continued access to the 600 MHz band and expanding access to other bands. Wireless microphones play an important role in enabling broadcasters and other video programming networks to cover breaking news and live sports events. Wireless microphones also enhance event productions in a variety of settings – including theaters and music venues, film studios, conventions, corporate events, houses of worship, and Internet webcasts.

斗地主达人Most wireless microphones today operate on unused spectrum in the frequencies currently allocated for TV broadcasting。 Wireless microphones also operate in other bands, both on a licensed and unlicensed basis, depending on the particular band。 Following the incentive auction, with the repacking of the television band and the repurposing of current television spectrum for wireless services, there may be fewer frequencies in the television bands available for use by wireless microphone operations。 Specifically, the new rules:

  • Provide more opportunities for licensed use in the remaining TV bands by allowing greater use of the VHF channels and permitting co-channel operations inside DTV contours without coordination if TV signals fall below specified threshold;
  • Expand eligibility for licensed use of the 4-megahertz portion of the 600 MHz duplex gap to include all licensed users in the TV bands (broadcasters, cable programming networks, movie studios, and operators at major sporting/concerts/theater venues); and
  • Provide new opportunities for these licensed wireless microphones to operate on a secondary basis in three additional spectrum bands, consistent with the FCC's spectrum management goals:
    • access to significantly more spectrum in the 900 MHz band;
    • access to a portion of the 1435-1525 MHz band at specified times and places, subject to coordination requirements that protect critical aeronautical mobile telemetry; and
    • access to portions of the 6875-7125 MHz band.

Together with the rules adopted by the FCC regarding unlicensed use of the 600 MHz band, these new rules provide for efficient sharing of these bands to accommodate various wireless microphone users, while continuing to protect the licensed users of each of the bands。

China - Electronic Labeling Now Permitted

斗地主达人On June 26, 2105, China's Ministry of Industry and Information Technology announced that electronic labelling of the SRRC CMIIT ID is now permitted on RF devices, provided that it meets the following requirements:

  • The display cannot be removed and/or replaced.
  • Instructions on how to locate the CMIIT ID are provided to the user.
  • The user can easily locate the CMIIT ID, without the need for a special operation such as entering a password.
  • The user can locate the CMIIT ID without the need for special accessories or additional conditions such as inserting a SIM card.
  • The device meets all other related laws and regulations of China.
  • The CMIIT ID should also be affixed to the outer packaging and user manual of the device, and manufacturers should ensure that the CMIIT ID cannot be changed or deleted by any third party.

India – BIS Delays Safety Approval Scheme Implementation Again

On August 10, 2015, India's Department of Electronics and Information Technology (Deity) announced they are postponing the implementation date of the BIS Safety Approval Scheme requirement until December 1, 2015 for the following products:

  • Power Adaptors for IT Equipment
  • Power Adaptors for Audio, Video & similar electronic apparatus
  • UPS/Invertors of rating ≤5KVA
  • DC or AC supplied Electronic Controlgear for LED modules
  • Sealed secondary cells/batteries containing alkaline or other non-acid electrolytes for use in portable applications
  • Fixed general purpose LED luminaires

Ukraine – Changes in Regulatory Requirements

In accordance with Ukrainian Government Decree No。 295, 802。11ac devices are officially allowed in the Ukraine as of May 14, 2015。 These devices must obtain National Commission for the State Regulation of Communications and Informatization (NKRZI) Type Approval prior to being sold on the market。 If a previously approved device has the 802。11ac function, its test report, certificate and RTTE DoC should be updated accordingly with NKRZI, or the 802。11ac function must be disabled。

Vietnam – New Standard Allowing 60 GHz Approvals

On June 15, 2015, Vietnam's Ministry of Information and Communications (MIC) published Circular no. 14/2015/TT approving “National technical regulation for radio emission of wireless access equipment operating at Multiple-Gigabit data rates in the 60GHz band.” This new standard, QCVN88:2015/BTTTT (in accordance with EN 302 567 V1.2.1 (2012-01)), will go into effect January 1, 2016.

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