IEEE 187-2003 pdf download IEEE Standard for Measurement Methods of Emissions from FM and Television Broadcast Receivers in the Frequency Range of 9 kHz to 40 GHz
1.1 Scope
Spurious radiation from sound and television broadcast receivers of the superheterodyne type are possiblesources of interference with other radio services.
This standard describes the potential sources of spurious radiation from receivers intended for the receptionof sound and television broadcast, and the measurement methods for them.
2. References
This standard shall be used in conjunction with the following publications. When the following specifica-tions are superseded by an approved revision, the revision shall apply.
ANSI C63.2-1996,American National Standard for Electromagnetic Noise and Field Strength, 10 kHz to40 GHz Specifications.
ANSI C63.4-2001 American National Standard for Methods of Measurement of Radio-Noise Emission fromLow-Voltage Electrical and Electronic Equipment in the Range of 9 kHz to 40 GHZ.
Code of Federal Regulations (CFR) Title 47, Part 15.2
CISPR 16-1 (2002-10) Ed. 2.1 Consolidated Edition Specification for radio disturbance and immunity mea-suring apparatus and methods–Part 1: Radio disturbance and immunity measuring apparatus.
CISPR 22 (2003) Ed.A Information technology equipment–Radio disturbance characteristics–Limitsand methods of measurement.
ITU-R BT.471-1 (07/86), Nomenclature and description of color bar signals.
3. Definitions
For the purposes of this standard, the following terms and definitions apply. The Authoritative Dictionary ofIEEE Standards Terms. Seventh Edition (B11, ANSI C63.4,” and CFR 47 Part 15 should be referenced forterms not defined in this clause.
3.1 frequency modulation (FM) sound broadcast receiver: A device designed to receive FM soundbroadcast from a licensed station on frequencies that are authorized for commercial or public broadcasting.
3.2 television (TV) broadcast receiver: A device designed to receive television pictures that are broadcastsimultaneously with sound from a licensed station on frequencies that are authorized for commercial or public broadcasting.
4.Sources of spurious emissions
Possible sources of spurious emissions typically found in TV and FM receivers are as follows:The local oscillator circuits, which may radiate fundamental, harmonics, and intermodulation prod.aucts formed from the local oscillator fundamental and harmonics.
bIntermediate frequency amplifier, which may radiate spurious signals at the fundamental and harmonics of the intermediate frequency.
c1In some television receivers, the high-voltage circuits for the cathode-ray tube incorporate radio frequency oscillators, which may be a potential source of radiation at fundamental and harmonicfrequencies.
In television receivers, the sweep circuits, which may radiate harmonics of their fundamentaldfrequencies.
Cin television receivers. the video amplifier and any nonlinear circuit element that may produce signals by demodulation of radio or intermediate frequency signals.
Digital circuits incorporated for a channel display, or processing of digital wanted signals, or anyother digital control circuit.
IEEE 187-2003 pdf download
PS:Thank you for your support!
