American National Standard Methods of Measurement of the Electromagnetic and Operational Compatibility of Unlicensed Personal Communications Services (UPCS) Devices Accredited by the American National Standards Institute Sponsored by the Accredited Standards Committee on Electromagnetic Compatibility, IEEE 3 Park Avenue New York, NY 10016-5997, USA 15 January 2007 ™ ANSI C63.17-2006 (Revision of ANSI C63.17-1998) Licensed to Sid Sanders. ANSI order X_30788. Downloaded 11/19/2007 2:45 PM.
Licensed to Sid Sanders. ANSI order X_30788. Downloaded 11/19/2007 2:45 PM. Single user license only. Copying and networking prohibited.
ANSI C63.17-2006 (Revision of ANSI C63.17-1998) American National Standard Methods of Measurement of the Electromagnetic and Operational Compatibility of Unlicensed Personal Communications Services (UPCS) Devices Accredited Standards Committee on Electromagnetic Compatibility, C63™ accredited by the American National Standards Institute Secretariat Institute of Electrical and Electronic Engineers, Inc. Approved 28 June 2006 American National Standards Institute Licensed to Sid Sanders.
Abstract: Specific test procedures are established for verifying the compliance of unlicensed personal communications services (UPCS) devices with applicable regulatory requirements regarding radio-frequency emission levels and spectrum access procedures. Keywords: etiquette, personal communications, RF emissions, spectrum access, unlicensed devices, UPCS ________________________ The Institute of Electrical and Electronics Engineers, Inc.
American National Standard An American National Standard implies a consensus of those substantially concerned with its scope and provisions. An American National Standard is intended as a guide to aid the manufacturer, the consumer, and the general public. The existence of an American National Standard does not in any respect preclude anyone, whether he has approved the standard or not, from manufacturing, marketing, purchasing, or using products, processes, or procedures not conforming to the standard.
Introduction This introduction is not part of ANSI C63.17-2006, American National Standard Methods of Measurement of the Electromagnetic and Operational Compatibility of Unlicensed Personal Communications Services (UPCS) Devices.
Participants At the time this standard was published, the Accredited Standards Committee on Electromagnetic Compatibility, C63, had the following membership: Donald N. Heirman, Chair Dan Hoolihan, Vice Chair Robert L. Pritchard, Secretary Organization Represented Name of Representative Alliance for Telecom Industry Solutions (ATIS)...................................................... Chrys Chrysanthou James Turner (Alt.) American Council of Independent Laboratories (ACIL) ................................
At the time this standard was completed, the C63 Subcommittee 7 Working Group had the following membership: H. Stephen Berger, Chair Dag Åkerberg, Vice Chair Steve Cahill, Technical Editor William Brasier Greg Czumak Joseph Dichoso William Hurst vi Copyright © 2007 IEEE. All rights reserved. Licensed to Sid Sanders. ANSI order X_30788. Downloaded 11/19/2007 2:45 PM. Single user license only. Copying and networking prohibited.
Contents 1. Overview .................................................................................................................................................... 1 1.1 Scope ................................................................................................................................................... 1 1.2 Applications......................................................................................................................................... 1 1.
8. Time and spectrum window access procedure ......................................................................................... 31 8.1 Timing for EUTs using control and signaling channel-type transmissions ....................................... 32 8.2 Timing for EUTs using communications channel-type transmissions............................................... 34 8.3 Duplex connections ...................................................................................................................
American National Standard Methods of Measurement of the Electromagnetic and Operational Compatibility of Unlicensed Personal Communications Services (UPCS) Devices 1. Overview 1.1 Scope This standard sets forth uniform methods of measurement of the electromagnetic and operational compatibility of unlicensed personal communications services (UPCS) devices. This standard does not cover licensed personal communications services (PCS) devices.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices This standard describes preferred test methods, test facilities and, in some cases, alternative test methods and facilities. If these methods and facilities do not apply to the equipment under test (EUT), the manufacturer must explain why and must provide an alternative test procedure that has been approved by the applicable regulatory agency.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices ANSI C63.14-1998, American National Standard Dictionary for Technologies of Electromagnetic Compatibility (EMC), Electromagnetic Pulse (EMP), and Electrostatic Discharge (ESD). Code of Federal Regulations Title 47 Part 2 (47CFR2), Frequency Allocations and Radio Treaty Matters: General Rules and Regulations.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices 3.1.7 different collocated: Two or more antennas of substantially differing gains or efficiencies, with a mutual separation distance of 1 m or less, mounted on or within one housing, for the purpose of providing diversity against multipath fading. 3.1.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices 3.1.22 responding device: A UPCS device that does not monitor its own transmit channel, but rather operates in partnership with an initiating device, which monitors both duplex channels of a duplex transmission pair in order to qualify both its own and the responding device’s transmit channel for compliance with the spectral etiquette. See also: initiating device.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices 3.2.9 Plimit: The peak transmit power that the EUT must not exceed, taking into account antenna gain (GA) and emissions bandwidth. 3.2.10 Pmax: The peak transmit power that the EUT must not exceed, if antenna gain is less than G, taking into account emissions bandwidth. 3.2.11 PSDEUT: The EUT’s maximum of peak transmit power measured in any 3 kHz bandwidth. 3.2.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices These controlled RF paths may be realized either as “radiated” (through space) or “conducted” (over coaxial cable) paths. In the radiated case, the tests must be performed in a facility with controlled RF propagation characteristics, so that the path loss can be controlled by varying separation between transceiver and monitoring/source antennas.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices Figure 1 —Test facilities that may be used 4.2 Test configurations and setup Clause 6 provides detailed tests of parameters related to RF emissions, such as peak transmit power, emission bandwidth, and PSD. Those tests are similar to emission tests performed on most non-UPCS devices.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices Independent of antenna type and placement, the measurement type (i.e., conducted or radiated) can be selected by the product manufacturer and specified in the compliance report. Conducted measurements are generally required for systems with detachable antennas for measurements where antenna frequency selectivity is not a factor.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices support a lesser number of users or do not implement the LIC algorithm are required to use a lower threshold. EUT transmit power is also limited, and the thresholds are adjusted to normalize the anticipated interference generated by an EUT in proportion to its transmit power. 4.3.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices 4.4 Limits for radiated and conducted tests When conducted tests are performed, the limits from Equation (1), Equation (2), and Equation (3) or Equation (4) in 4.3.1 through 4.3.4 apply directly. For radiated tests, those limits must be translated to the equivalent limits on EIRP and monitoring threshold field strength, respectively.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices The equivalent coverage test for the transmitting and monitoring antennas is then performed as follows: a) Set up the reference antenna with controlled polarization and with its major lobe facing the EUT’s direction of maximum transmit radiation, at a distance r (meeting the far-field conditions) from the EUT antennas.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices where EEUTmax given in decibels referenced to one microvolt per meter (i.e., dBµV/m). Using the nominal value of the EUT gain GA declared by the manufacturer, calculate the limit on EIRPEUT using Equation (4) in 4.4. If EIRPEUT exceeds the limit, it fails the test.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices 4.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices 6. RF measurements 6.1 Emissions tests 6.1.1 Test requirements The equipment configured as shown in Figure 3 is for the conducted method. If the radiated method is required, refer to test configurations in Clause 4. The EUT is arranged to communicate via a fixed carrier frequency between its transmitter and a compatible receiver.
ANSI C63.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices Record the maximum level of the modulated carrier. Find the two furthest frequencies above and below the frequency of the maximum level of the modulated carrier where the signal level is 26 dB below the peak level of the carrier. The difference in frequency between these two frequencies is the emission bandwidth.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices determination of the average burst length. If there is no level that is 20 dB below the peak, then analyze the complete sweep and include all of the wideband waveform that occurs during the sweep time in the computation of average burst length.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices Table 5 —Spectrum analyzer settings for measuring in-band emissions RBW Approximately 1% of the emission bandwidth (B) Video bandwidth 3 × RBW Sweep time The sweep time shall be sufficiently slow that the swept frequency rate shall not exceed one RBW per three transmit bursts.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices reliable communication between the EUT and the companion device. Tests should be performed at the manufacturer’s recommended normal operating temperature and voltage, unless otherwise specified. The EUT may be configured using administrative commands to use a fixed channel during the tests. 6.2.
ANSI C63.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices not exceed 50 ppm, not including a shift of the mean. Each EUT that further divides access in time shall maintain a frame-repetition rate whereby three times the standard deviation of the frequency stability shall not exceed 10 ppm, not including a shift of the mean. 6.2.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices Difficulty in definitive monitoring testing comes from several potential sources as follows: ⎯ EUTs may be designed to operate only together with other devices of like type. ⎯ EUTs may select a channel or stop operating when interfering radio signals are detected in their channel. ⎯ EUTs may transmit intermittently, and thus their modes of operation may be difficult to detect.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices Figure 6 —Interference added to operating region to test compliance Figure 7 —Possible equipment configuration for radiated monitoring and operational tests Figure 8 —Possible equipment configuration for conducted monitoring and operational tests 24 Copyright © 2007 IEEE. All rights reserved. Licensed to Sid Sanders. ANSI order X_30788. Downloaded 11/19/2007 2:45 PM. Single user license only.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices 7.1.2 Monitoring test procedure—general The threshold used for channel access deferral is based on the power and emission bandwidth measurements of 6.1.2 and 6.1.3. Each test will generally consist of the following steps: a) Using either carrier and/or access channel administration commands or out-of-operating-region interference (see 7.2.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices The target region normally has borders both in the frequency and time domains. Note that the procedure described in 7.2.3 only defines the borders in the frequency domain; no compensation is to be made for limited isolation in the time domain. Figure 9 shows the relationships between the threshold being tested and the interference power levels discussed in this subclause.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices deference response of the companion device. This implies that for the conducted case (Figure 8), the attenuation ACD shall be at least 10 dB higher than the attenuation AEUT.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices 7.3.2 Upper threshold for EUTs that implement the LIC procedure Choose one of the following two alternative tests: a) Set the EUT, by administrative commands, to operate on the carrier closest to the center of the band. By an interference generator, apply interference on that channel at an in-band level at the EUT of TU + UM + 10 dB. Lower the interference until the EUT can transmit.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices The test described as follows is intended to verify that the EUT makes its channel selection decision on the basis of a recent power level reading: a) Allow EUT transmission on only two carrier frequencies, which will be designated f1 and f2.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices 7.4.2 More detailed test The following (more detailed) test verifies the operation of the EUT by probing the shape of the emissions and the monitoring filter. From the measurement of the emission bandwidth (see 6.1.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices synchronized with the timeslot pattern in the frame of the EUT. If necessary, the manufacturer shall supply means by which to synchronize the interference with the timeslot structure of the EUT. The interference shall be timed so as to occur centered within the timeslot.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices requirement of 47CFR15.323(c)(4) that the control and signaling channel be tested against the access criteria at least every 30 s. An EUT may transmit a control and signaling channel only, or a communications channel only (see the definitions in 3.1), both types of channel at once, or each at different times.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices 8.1.2 Access criteria functional test (47CFR15.323(c)(6) option not implemented) This test is to verify that transmission restarts on a different access channel if the access criteria are not met again on the old channel, for EUTs that transmit control and signaling channels and that do not use the provisions of 47CFR15.323(c)(6).
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices 8.2 Timing for EUTs using communications channel-type transmissions This group of tests is applicable for an EUT that implements communications channel transmissions. The tests are intended to verify the timing of the EUT under conditions where acknowledged transmissions are expected. Acknowledged transmissions require a companion device; see Figure 7 or Figure 8 for test configuration. 8.2.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices 8.2.2 Transmission duration25 This subclause tests the EUT for compliance to the requirement of 47CFR15.323(c)(3) that the EUT does not continue to use the same channel without executing the access criteria at least as often as every 8 h. The test procedure is as follows: a) Activate the EUT and initiate a communication channel with the companion device, and start a timer or frame counter.
ANSI C63.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices Figure 12 —Example of duplex interference for FDMA frequency-duplexed system The test procedure is as follows: a) Adjust the path loss between the EUT and its companion device such that the received signal to the EUT from the companion device is at least 40 dB above TL + UM.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices 8.3.2 Validation of dual access criteria check for EUTs that implement the upper threshold The test procedure is as follows: a) Adjust the path loss between the EUT and its companion device such that the received signal to the EUT from the companion device is at least 40 dB above TL + UM.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices 8.4 Alternative monitoring interval31 The manufacturer shall state whether the system uses the provisions of 47CFR15.323(c)(10) and 47CFR15.323(c)(11) and, if so, which EUTs are the “initiating devices” and which devices use the provisions of 47CFR15.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices measurement procedure has options, the test report shall state which procedures or options were used. The test report shall also state the issue or year of the referenced standard(s) used. 9.3 Equipment units tested The test report shall list all equipment tested, including product type and marketing designations where applicable.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices 9.10 General and special conditions If an alternate test method was used, the test report shall identify and describe that method, provide justification for its use, and describe how the results obtained through its use correlate with the methods specified by the standard to which the EUT was tested.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices Annex A (informative) 47CFR15, Subpart D—Rules and test cases for UPCS devices 47CFR15, Subpart D—Unlicensed PCS Devices, as of December 29 2004 Scope 15.301 ANSI test Information This subpart sets out the regulations for unlicensed personal communications services (PCS) devices operating in the 1910–1930 MHz frequency band. Definition 15.303 Emission bandwidth 15.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices 47CFR15, Subpart D—Unlicensed PCS Devices, as of December 29 2004 Equipment authorization 15.305 ANSI test Information Equipment authorization requirement. UPCS devices operating under this subpart shall be certificated by the Commission under the procedures in Subpart J of Part 2 of this Chapter before marketing.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices 47CFR15, Subpart D—Unlicensed PCS Devices, as of December 29 2004 Labeling ANSI test Labels 15.19(a) (3) All other devices shall bear the following statement in a conspicuous location on the device: This device complies with part 15 of the FCC Rules.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices 47CFR15, Subpart D—Unlicensed PCS Devices, as of December 29 2004 Power spectral density 15.319(d) Antenna gain 15.319(e) ANSI test 6.1.5 Power spectral density shall not exceed 3 milliwatts in any 3 kHz bandwidth as measured with a spectrum analyzer having an RBW of 3 kHz. 4.3.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices 47CFR15, Subpart D—Unlicensed PCS Devices, as of December 29 2004 Monitoring time ANSI test 7.3.4 15.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices 47CFR15, Subpart D—Unlicensed PCS Devices, as of December 29 2004 Maximum spectrum occupancy 15.323(c)(5).4 Random waiting 15.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices 47CFR15, Subpart D—Unlicensed PCS Devices, as of December 29 2004 Co-located device LBT 15.323(c)(11) Fair access 15.323(c)(12) ANSI test 8.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices 47CFR15, Subpart D—Unlicensed PCS Devices, as of December 29 2004 Frame repetition stability 15.323(e).2 TDMA repetition stability 15.323(e).3 Jitter 15.323(e).4 ANSI test 6.2.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices Annex B (informative) Radiated and conducted measurement of power output and monitoring thresholds This appendix contains background material to support the procedures in Clause 4 of this standard. B.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices B.2 Power limits B.2.1 Transmit power limits For EUTs with antenna gain less than a certain value g, which is specified in the applicable regulations,33 the maximum EUT transmit power at the transmit antenna terminals is Pmax = 10−4 B W, where B is the EUT emission bandwidth in hertz. In decibels referenced to 1 mW, Pmax = 5 log B − 10.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices B.2.4 Separate transmit and monitoring antennas The EUT monitoring antenna shall provide coverage, equivalent to the EUT transmit antenna, that may result in further correction to the monitoring threshold. The following definition of equivalent coverage is adopted.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices If the transmit and monitoring antennas can be separated from each other by a maximum distance s, it is suggested that the power TM at the EUT transmit antenna terminals be established only for one point at distance r between the reference antenna and the EUT in the direction of EUT transmit antenna maximum radiation, by applying corresponding power PTref at the terminals of a reference antenna.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices B.4 General guidelines on measurement conditions and procedures B.4.1 Conducted measurements When the transmit and monitoring system power can be measured at the EUT antenna terminals, these characteristics are tested with conducted measurements, and the procedures described in Clause 7 can be applied directly.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices Annex C (informative) Options for implementing the tests of Clause 7 and Clause 8 This annex discusses recommendations for the multicarrier interference generator that may be used to block use of particular carriers and timeslots as required by tests of Clause 7 and Clause 8. An example implementation is provided of one such multicarrier interference generator.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices of a user interface or other communications channel commencement means. This digital hardware flag is made active by the controller’s software implementation during the setup of the communications channel during the frame previous to the first intended transmit frame of the communications channel. C.2.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices Figure C.1—An example implementation of a test system for the tests of Clause 7 and Clause 8 57 Copyright © 2007 IEEE. All rights reserved. Licensed to Sid Sanders. ANSI order X_30788. Downloaded 11/19/2007 2:45 PM. Single user license only. Copying and networking prohibited.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices C.2.2 EUT and companion device provisions The test system of this example requires that the EUT and the companion device provide the necessary trigger signals for the arbitrary waveform generator. In this example, the EUT and companion device form a cordless telephone system—a handset and a telephone base.
ANSI C63.17-2006 Methods of Measurement of the Electromagnetic and Operational Compatibility of UPCS Devices C.3 Alternative approaches The example discussed in this subclause assumes that trigger signals are available from the EUT and companion device. Without these trigger signals, synchronization and timing are difficult.
