EN 60315-4:1998

SLOVENSKI STANDARD
01-april-1999
Methods of measurement on radio receivers for various classes of emission -- Part
4: Receivers for frequency-modulated sound broadcasting emissions (IEC 60315-
4:1997)
Methods of measurement on radio receivers for various classes of emission -- Part 4:
Receivers for frequency-modulated sound broadcasting emissions
Meßverfahren für Funkempfänger für verschiedene Sendearten -- Teil 4: Empfänger für
frequenzmodulierte Ton-Rundfunksendungen
Méthodes de mesure applicables aux récepteurs radioélectriques pour diverses classes
d'émission -- Partie 4: Récepteurs pour émissions de radiodiffusion en modulation de
fréquence
Ta slovenski standard je istoveten z: EN 60315-4:1998
ICS:
33.160.20 Radijski sprejemniki Radio receivers
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

NORME
CEI
INTERNATIONALE
IEC
60315-4
INTERNATIONAL
Deuxième édition
STANDARD
Second edition
1997-11
Méthodes de mesure applicables aux récepteurs
radioélectriques pour diverses classes d'émission –
Partie 4:
Récepteurs pour émissions de radiodiffusion
en modulation de fréquence
Methods of measurement on radio receivers for
various classes of emission –
Part 4:
Receivers for frequency-modulated
sound broadcasting emissions
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60315-4 © IEC:1997 – 3 –
CONTENTS
Page
FOREWORD . 9
Clause
1 General. 13
1.1 Scope. 13
1.2 Normative references. 13
1.3 Definitions. 15
1.4 Standard measuring conditions . 17
1.5 General notes on measurements. 27
2 Sensitivity and internal noise. 33
2.1 Explanation of terms . 33
2.2 Signal-to-noise ratio (weighted and unweighted) and SINAD . 33
2.3 Noise-limited sensitivity. 35
2.4 Gain-limited sensitivity. 37
2.5 Usable sensitivity. 37
2.6 Deviation sensitivity. 39
2.7 Input-output characteristics. 39
3 Rejection of unwanted signals. 41
3.1 Capture ratio. 41
3.2 Selectivity and nearby channel rejection (two-signal) . 43
3.3 Rejection of intermediate and image frequencies, and spurious responses . 47
3.4 Suppression of amplitude modulation . 53
3.5 Rejection of r.f. signal intermodulation products . 55
3.6 Tuning and automatic frequency control (AFC) characteristics . 63
4 Interference due to internal sources . 65
4.1 Single-signal whistles. 65
4.2 Modulation hum (interference at power supply frequency). 65
4.3 Unwanted self-oscillations. 67
4.4 Acoustic feedback. 69

60315-4 © IEC:1997 – 5 –
Page
5 Overall audio-frequency characteristics. 69
5.1 Fidelity. 69
5.2 Harmonic distortion. 71
5.3 Intermodulation distortion. 79
5.4 Inter-channel characteristics. 81
5.5 Characteristics of the volume control. 83
5.6 Residual output. 85
5.7 Crosstalk attenuation. 85
5.8 Overall audio-frequency response . 87
6 Effect of additional modulations of the input signal . 89
6.1 Rejection of signals in the ranges 16 kHz to 22 kHz and 54 kHz to 99 kHz. 89
6.2 Rejection of signals in the range 62 kHz to 73 kHz (SCA rejection) . 89
6.3 Measurement of interference caused by RDS signals . 89
6.4 Suppression of the fundamental, harmonics and sidebands of the subcarrier
and the pilot-tone signal . 91
6.5 Suppression of interference due to adjacent channel signals with a
stereophonic receiver using the pilot-tone system. 93
7 Sensitivity, antenna gain and directional response of receivers using rod, telescopic
or built-in antennas . 93
7.1 Introduction. 93
7.2 Method of measurement of sensitivity and antenna gain for a receiver using
a rod or telescopic antenna by the absorbing clamp described in CISPR 16-1. 93
8 Characteristics whose methods of measurement are specified in IEC 60315-1 . 95
8.1 Introduction. 95
8.2 List of characteristics and cross-references. 95
Figures
1 Frequency response limits of band-pass filter 200 Hz to 15 kHz . 97
2 Frequency response limits of band-pass filter 22,4 Hz to 15 kHz . 99
3 Frequency response limits of band-pass filter 200 Hz to 1,5 kHz . 99
4 Frequency response limits of the 1 kHz band-elimination filter. 101
5 Weighting filter for converting white noise into special coloured noise for
selectivity measurements. 101
6 Arrangement for various measurements with two r.f. input signals . 103
7 Antenna substitution networks for injecting one or two signals, for 50 Ω signal
generators and 75 Ω unbalanced and 300 Ω balanced receiver inputs . 105
8 Arrangement for various measurements with one r.f. input signal . 107
9 Signal-to-noise ratio. 109

60315-4 © IEC:1997 – 7 –
Page
10 Noise-limited sensitivity as a function of signal frequency. 109
11 Gain-limited sensitivity as a function of signal frequency . 111
12 Output/input characteristics and noise output curves showing terms defined in 1.3 . 113
13 Capture ratio . 115
14 Selectivity curves. 117
15 Image and intermediate frequency rejection ratios. 119
16 Spurious responses at a tuning frequency of 94 MHz (single signal method). 121
17 Arrangement for measuring rejection of unwanted signals simulating cable reception,
using sinusoidal modulation . 123
18 Arrangement for various measurements using three r.f. input signals . 125
19 Tuning characteristics. 127
20 Tuning characteristics obtained by measuring the local oscillator frequency . 127
21 Measurement of acoustic feedback . 129
22 Arrangement for measuring fidelity. 129
23 Overall total harmonic distortion as a function of a.f. output power . 131
24 Distortion-limited output power as a function of modulation frequency . 131
25 Total harmonic distortion as a function of r.f. input signal level . 133
26 Total harmonic distortion as a function of the deviation . 133
27 Variation of distortion with detuning. 135
28 Total harmonic distortion as a function of the a.f. modulation frequency . 135
29 Cross-intermodulation between the channels of a stereo receiver (pilot-tone system) . 137
A.1 Example of a passive 1 kHz band-elimination filter capable of meeting the limits
shown in figure 4 . 139
D.1 Arrangement for r.f. signal injection into the antenna with an absorbing clamp. 147
D.2 Correction curves for the insertion loss of the absorbing clamp . 147
Annexes
A Example of a 1 kHz band-elimination filter. 139
B Standard deviations for supplementary services. 141
C Measurement of crosstalk between stereo channels. 143
D Characteristics of rod and telescopic antennas (under consideration) . 145

60315-4 © IEC:1997 – 9 –
INTERNATIONAL ELECTROTECHNICAL COMMISSION
_________
METHODS OF MEASUREMENT ON RADIO RECEIVERS FOR
VARIOUS CLASSES OF EMISSION –
Part 4: Receivers for frequency-modulated
sound broadcasting emissions
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