{"id":229279,"date":"2024-10-19T14:54:54","date_gmt":"2024-10-19T14:54:54","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/bs-en-iec-60268-32018\/"},"modified":"2024-10-25T09:02:59","modified_gmt":"2024-10-25T09:02:59","slug":"bs-en-iec-60268-32018","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/bsi\/bs-en-iec-60268-32018\/","title":{"rendered":"BS EN IEC 60268-3:2018"},"content":{"rendered":"

This part of IEC 60268 applies to analogue amplifiers, and the analogue parts of analogue\/digital amplifiers, which form part of a sound system for professional or household applications. It specifies the characteristics that should be included in specifications of amplifiers and the corresponding methods of measurement.<\/p>\n

\n

NOTE The methods of measurement for digital amplifiers and similar equipment are given in IEC 61606 [1] 1<\/sup>.<\/p>\n<\/blockquote>\n

In general, the specified methods of measurement are those which are seen to be most directly related to the characteristics. This does not exclude the use of other methods that give equivalent results.<\/p>\n

In general, the methods are based on the simplest measuring equipment which can provide useful results. This does not exclude the use of more complex equipment that can give higher accuracy and\/or allow automatic measurement and recording of results.<\/p>\n

Rated conditions and standard measuring conditions are specified in order to allow measurements to be reliably repeated.<\/p>\n

PDF Catalog<\/h4>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
PDF Pages<\/th>\nPDF Title<\/th>\n<\/tr>\n
2<\/td>\nundefined <\/td>\n<\/tr>\n
6<\/td>\nCONTENTS <\/td>\n<\/tr>\n
9<\/td>\nFOREWORD <\/td>\n<\/tr>\n
11<\/td>\n1 Scope
2 Normative references <\/td>\n<\/tr>\n
12<\/td>\n3 Terms, definitions and rated values
3.1 Terms and definitions <\/td>\n<\/tr>\n
13<\/td>\n3.2 Rated values
4 Conditions
4.1 Rated conditions and standard measuring conditions
4.1.1 Overview <\/td>\n<\/tr>\n
14<\/td>\n4.1.2 Rated conditions <\/td>\n<\/tr>\n
15<\/td>\n4.1.3 Standard measuring conditions
4.2 Other conditions
5 Classes of operation
6 Interchangeable parts
7 Automatic controls <\/td>\n<\/tr>\n
16<\/td>\n8 Power supply
9 Position of the volume controls
10 Pre-conditioning for measurements
11 Series of measurements <\/td>\n<\/tr>\n
17<\/td>\n12 Variable consumption apparatus
13 Marking
14 Operating environment <\/td>\n<\/tr>\n
18<\/td>\n15 Characteristics to be specified, and their methods of measurement
15.1 Power supply characteristics
15.1.1 Characteristics to be specified
15.1.2 Method of measurement
15.2 Tolerance of (long-term) power supply voltage variations
15.2.1 Characteristic to be specified <\/td>\n<\/tr>\n
19<\/td>\n15.2.2 Methods of measurement <\/td>\n<\/tr>\n
20<\/td>\n15.3 Tolerance of power supply frequency variations
15.3.1 Characteristics to be specified
15.3.2 Methods of measurement
15.4 Tolerance of power supply harmonics and ripple
15.4.1 Characteristics to be specified <\/td>\n<\/tr>\n
21<\/td>\n15.4.2 Methods of measurement
15.5 Input characteristics
15.5.1 Rated source impedance, characteristic to be specified
15.5.2 Input impedance <\/td>\n<\/tr>\n
23<\/td>\n15.5.3 Rated source e.m.f., characteristic to be specified
15.5.4 Minimum source e.m.f. for rated distortion-limited output voltage
15.6 Output characteristics
15.6.1 Rated load impedance, characteristic to be specified <\/td>\n<\/tr>\n
24<\/td>\n15.6.2 Output source impedance <\/td>\n<\/tr>\n
25<\/td>\n15.6.3 Output voltage and power (distortion-limited) <\/td>\n<\/tr>\n
26<\/td>\n15.6.4 Maximum effective output power (distortion-limited at 10 %) <\/td>\n<\/tr>\n
27<\/td>\n15.6.5 Regulation <\/td>\n<\/tr>\n
28<\/td>\n15.6.6 Overload restoring time
15.7 Limiting characteristics
15.7.1 Overload source e.m.f. <\/td>\n<\/tr>\n
29<\/td>\n15.7.2 Short-term maximum output voltage and power
15.7.3 Long-term maximum output voltage and power <\/td>\n<\/tr>\n
30<\/td>\n15.7.4 Temperature-limited output power <\/td>\n<\/tr>\n
31<\/td>\n15.8 Characteristics of protection circuits
15.8.1 General <\/td>\n<\/tr>\n
32<\/td>\n15.8.2 Protection against potentially damaging combinations of output voltageand current <\/td>\n<\/tr>\n
33<\/td>\n15.8.3 Characteristics of d.c. offset protection circuits <\/td>\n<\/tr>\n
34<\/td>\n15.9 Sustaining-time for rated (distortion-limited) output voltage or power
15.9.1 General
Tables
Table 1 \u2013 Different rated total harmonic distortion and rated distortion-limitedoutput power specifications for the same amplifier <\/td>\n<\/tr>\n
35<\/td>\n15.9.2 Characteristic to be specified
15.9.3 Method of measurement
15.10 Gain
15.10.1 Voltage gain and e.m.f. gain <\/td>\n<\/tr>\n
36<\/td>\n15.10.2 Maximum e.m.f. gain
15.10.3 Attenuation characteristic of the volume control <\/td>\n<\/tr>\n
37<\/td>\n15.10.4 Attenuation characteristic of balance controls for multi-channel equipment
15.11 Response
15.11.1 Gain-frequency response <\/td>\n<\/tr>\n
38<\/td>\n15.11.2 Gain-limited effective frequency range
15.11.3 Distortion-limited effective frequency range
15.11.4 Phase-frequency response <\/td>\n<\/tr>\n
39<\/td>\n15.12 Amplitude non-linearity
15.12.1 General
15.12.2 Rated total harmonic distortion, characteristic to be specified
15.12.3 Total harmonic distortion under standard measuring conditions <\/td>\n<\/tr>\n
40<\/td>\n15.12.4 Total harmonic distortion as a function of amplitude and frequency
15.12.5 Harmonic distortion of the nth order under standard measuring conditions <\/td>\n<\/tr>\n
41<\/td>\n15.12.6 Harmonic distortion of the nth order as a function of amplitude and frequency <\/td>\n<\/tr>\n
42<\/td>\n15.12.7 Modulation distortion of the nth order (where n = 2 or n = 3) <\/td>\n<\/tr>\n
44<\/td>\n15.12.8 Difference-frequency distortion of the nth order (where n = 2 or n = 3) <\/td>\n<\/tr>\n
45<\/td>\n15.12.9 Dynamic intermodulation distortion (DIM)
Table 2 \u2013 Distortion components due to dynamic intermodulation distortion fallingin the frequency range up to 20 kHz <\/td>\n<\/tr>\n
47<\/td>\n15.12.10 Total difference frequency distortion <\/td>\n<\/tr>\n
48<\/td>\n15.12.11 Weighted total harmonic distortion <\/td>\n<\/tr>\n
49<\/td>\n15.13 Noise
15.13.1 Characteristic to be specified
15.13.2 Method of measurement <\/td>\n<\/tr>\n
50<\/td>\n15.14 Hum
15.14.1 General
15.14.2 Characteristics to be specified
15.14.3 Method of measurement <\/td>\n<\/tr>\n
51<\/td>\n15.15 Balanced inputs and outputs
15.15.1 Balance of the input <\/td>\n<\/tr>\n
52<\/td>\n15.15.2 Overload (distortion-limited) peak-to-peak common-mode input voltage <\/td>\n<\/tr>\n
53<\/td>\n15.15.3 Balance of the output <\/td>\n<\/tr>\n
54<\/td>\n15.16 Cross-talk and separation in multi-channel amplifiers
15.16.1 Characteristics to be specified
15.16.2 Method of measurement <\/td>\n<\/tr>\n
55<\/td>\n15.17 Gain and phase differences between channels in multi-channel amplifiers
15.17.1 Gain difference <\/td>\n<\/tr>\n
56<\/td>\n15.17.2 Phase difference
15.18 Dimensions and mass, characteristics to be specified <\/td>\n<\/tr>\n
57<\/td>\nFigures
Figure 1 \u2013 Example block diagram for multi-channel amplifier
Figure 2 \u2013 Connection diagram of equipment for digital input <\/td>\n<\/tr>\n
58<\/td>\nFigure 3 \u2013 Arrangements for the Class D amplifier
Figure 4 \u2013 Arrangements for measuring input impedance <\/td>\n<\/tr>\n
59<\/td>\nFigure 5 \u2013 Oscillogram when measuring overload restoring time <\/td>\n<\/tr>\n
60<\/td>\nFigure 6 \u2013 Protection against potentially damaging combinationsof output voltage and current <\/td>\n<\/tr>\n
61<\/td>\nFigure 7 \u2013 Arrangement for combining two input signals
Figure 8 \u2013 Frequency spectrum below 30 kHz of the signal formeasuring dynamic intermodulation distortion <\/td>\n<\/tr>\n
62<\/td>\nFigure 9 \u2013 Arrangement for measuring the balance of a balanced input
Figure 10 \u2013 Arrangement for measuring the internalimpedance balance of a balanced output
Figure 11 \u2013 Arrangement for measuring the voltage symmetry of a balanced output <\/td>\n<\/tr>\n
63<\/td>\nAnnex A (informative)Balanced interfaces <\/td>\n<\/tr>\n
64<\/td>\nAnnex B (informative)Specification of a multi-channel amplifier
B.1 General
B.2 Example specification of a 5.1 channel amplifier
B.3 Example specification of a 5 channel amplifier
Figure B.1 \u2013 Block diagram for a 5.1 channel surround amplifier <\/td>\n<\/tr>\n
65<\/td>\nFigure B.2 \u2013 Block diagram for a 5 channel surround amplifier <\/td>\n<\/tr>\n
66<\/td>\nBibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":"

Sound system equipment – Amplifiers<\/b><\/p>\n\n\n\n\n
Published By<\/td>\nPublication Date<\/td>\nNumber of Pages<\/td>\n<\/tr>\n
BSI<\/b><\/a><\/td>\n2018<\/td>\n68<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":229284,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[638,2641],"product_tag":[],"class_list":{"0":"post-229279","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-33-160-10","7":"product_cat-bsi","9":"first","10":"instock","11":"sold-individually","12":"shipping-taxable","13":"purchasable","14":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/229279","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media\/229284"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=229279"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=229279"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=229279"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}