GB/T 8586-2023Technical specification for operational frequency distribution and anti-interference of sound of fishfinders (English PDF)
探鱼仪工作频率分配及其防止声波干扰技术规范
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
November 27, 2023
Implementation date
June 1, 2024
Scope
GB/T 8586-2023 is the English-translated version of 探鱼仪工作频率分配及其防止声波干扰技术规范.
GB/T 8586-2023 is the Chinese national specification for allocating the operating frequencies of fishfinders and keeping their sound from interfering.
It gives technical requirements, and the matching inspection methods, for the allocation of operating frequencies and the prevention of acoustic interference between them, the frequency response of the receiving system, the width of the transmitted sound pulse, the attenuation of transmitted power and the directivity of the transducer.
Its terms clause defines the nominal operating frequency, frequency response, passband width, the rectangular factor - taken where gain falls by r dB, with 20, 40 and 60 given as the usual values - the transmitted pulse width and the beam axis.
It applies to the design, manufacture and inspection of fishfinders for fishing operations. It replaces GB/T 8586-2007, was issued on 27 November 2023 and has applied since 1 June 2024.
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Document preview — GB/T 8586-2023
National Standard of the People's Republic of China
- ICS
- 65.150
- Classification
- B 94
- Replacing
- GB/T 8586-2007
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword
- 1 Scope
- 2 Normative reference documents
- 3 Terms and definitions
Foreword
This document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1: Structure and Drafting Rules of Standardization Documents" Drafting.
This document replaces GB/T 8586-2007 "Operating Frequency Allocation of Fish Finders and Technical Conditions for Preventing Sound Wave Interference" and is consistent with Compared with GB/T 8586-2007, in addition to structural adjustments and editorial changes, the main technical changes are as follows:
a) Some terminology entries have been changed (see 3.1, 3.2, 3.3, 3.4, 3.5, 2.1, 2.2, 2.3, 2.4, 2.5 of the 2007 edition), and "vocabulary" has been added. Definition of "axis" (see 3.6);
b) The value range of the emitted sound pulse width has been changed (see Chapter 6, Chapter 5 of the 2007 edition);
c) Changed the transmit power attenuation value range (see Chapter 7, Chapter 6 of the 2007 edition);
d) Added test methods for required clauses (see Chapter 9).
1 Scope
This document specifies the operating frequency allocation of fish finders and their operating frequencies to prevent acoustic interference, the frequency response of the receiving system, and the emission of acoustic pulses.
Technical requirements for width, transmit power attenuation, and transducer directivity, and the corresponding inspection methods are described.
This document applies to the design, manufacture and inspection of fish finders for fishing operations.
2 Normative reference documents
The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the dated quotations For undated referenced documents, only the version corresponding to that date applies to this document; for undated referenced documents, the latest version (including all amendments) applies to this document.
GB/T 7965-2002 Acoustic underwater acoustic transducer measurement
SC/T 7003-1999 General technical specifications for vertical echo fish finders
SC/T 7004-2001 Fish finder transducer
3 Terms and definitions
The following terms and definitions apply to this document.
3.1 operating frequency
The operating frequency given in the fish finder technical specifications or instruction manual.
3.2 When
the frequency changes, the amplitude of the system output signal changes with the frequency curve.
3.3 Pass band width
On the frequency response curve, the corresponding frequency range is when the gain drops by 3dB relative to the maximum response value.
3.4 Rectangular factor
On the frequency response curve, the ratio of the difference between the upper and lower frequency limits when the gain decreases by r relative to the maximum response value and the passband width (3.3).
Note: Commonly used values of r are 20, 40, and 60, and the unit is dB.
3.5 Emitted sound pulse width
pulsewidthofsound The length of time the transducer emits an acoustic pulse.
......
This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
Normative references
Similar standards
Editions of GB/T 8586
| Edition | Title | Revision | Status |
|---|---|---|---|
| GB/T 8586-2023 | Technical specification for operational frequency distribution and anti-interference of sound of fishfinders | current edition | Current |
| GB/T 8586-2007 | Technical specification for operational frequency distribution and anti-interference of sound of fishfinders | previous edition | Superseded |
This page sells the current edition, GB/T 8586-2023. Earlier editions are listed for reference only.
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