BS 7594:2011

Foreword
Section 1: General
1 Scope
2 Normative references
3 Terms, definitions, signs and symbols
4 General
Section 2: Purchasing an AFILS, placing a contract
           for its installation, or obtaining independent
           assessment of the performance of an installation
5 Technical advice
6 Objective of the system
7 Choosing the system supplier
8 Contractual provisions
9 Factors to be considered at the design stage
Section 3: AFILS system design
10 Classification of systems
11 Signal sources
12 Objective measurement of intelligibility
13 Safety and reliability considerations
Section 4: Installing an AFILS
14 Responsibility of the installer
15 Installation practices and workmanship
16 Inspection and testing of wiring
17 Commissioning
18 Documentation
19 Certification
20 Acceptance
21 Verification
Section 5: Operation and maintenance
22 General
23 Routine testing
24 Inspection and servicing
25 Non-routine attention
Section 6: User responsibilities
26 Responsible person
27 Logbook
Section 7: System components
28 AFILS amplifiers
29 Loops
Annexes
Annex A (normative) - Induction-loop monitor
        receivers
Annex B (informative) - What is an audio-frequency
        induction-loop system (AFILS) and how does
        it work?
Annex C (informative) - Explanations of the basis of
        the design equations given in Section 3
Annex D (informative) - Model certificates
Annex E (informative) - Explanation of the specification
        and measurement of magnetic field strength of
        induction-loop systems
Annex F (normative) - Specification of the PPM-based
        field strength meter
Annex G (informative) - Magnetic field direction near
        the loop conductor
Bibliography