RECOMMENDATION
ITU-R SM.1541-2
Unwanted emissions in the out-of-band domain
Scope
1 Terminology and
definitions
1.1
Spurious domain
1.2
OoB domain1
1.3
dBsd and dBasd
1.4
dBc
1.5
dBpp
1.6
Reference bandwidth
1.7
Measurement bandwidth
1.8
psd
1.9
Mean power
1.10
Adjacent channel mean power
1.11
Peak power
1.12
Adjacent channel peak power
1.13
Total assigned band
1.14
Total assigned bandwidth
2 Application of
definitions
2.1
OoB domain emissions
2.2
Spurious domain emissions
2.3
Necessary bandwidth and OoB domain
2.3.1 Single carrier
emissions
2.3.2 Multicarrier emissions
2.4
Considerations on dBsd, dBc, and dBpp
2.4.1 Positive and
negative signs for dBsd, dBc, and dBpp
2.4.2 Comparisons of dBsd
and dBc
2.4.3 Practical
application of dBsd, dBc, and dBpp limits
3 Methods to determine
conformance to OoB domain emission limits
4 OoB domain
emission limits for transmitters in the range of 9 kHz to 300 GHz2
5 Adaptation of
OoB masks provided in Annexes 5 to 12 in the cases of narrow‑band
and wideband systems
6 Measurement
methods
Annex 1 Methods to determine conformance to OoB domain
emission limits
1 Adjacent channel
and alternate adjacent channel power method
1.1
Parameters to be measured
1.2
Units of measurement
1.3
Measurement bands
1.3.1 Adjacent band
1.3.2 Alternate adjacent
band
1.4
Adjacent band power ratio (ABPR)
2 OoB mask method
2.1
Parameters to be measured
2.2
Measurement range
2.3
OoB mask
Appendix 1 to Annex 1 Example calculation of a
permissible OoB power ratio and
power limits from a permissible OoB mask
1 Introduction
2 Discrete method
3 Continuous
method
Annex 2 Calculation of the start and end of the OoB domain
for multicarrier systems with single and multiple transponders per satellite
1 Example 1:
Multiple transponders per satellite serving the same service area
2 Example 2:
Single transponder per satellite
Annex 3 Graph labelling for dBc and dBsd masks
1 Y-axis labelling
of OoB masks
2 X-axis labelling
of OoB masks
Annex 4 List of ITU-R texts concerning OoB domain emissions
related to specific services
Annex 5 OoB domain emission limits for space services (earth
and space stations)
1 Introduction
2 OoB masks for
fixed-satellite service (FSS) earth and space stations
2.1
Generic OoB mask
2.2
Example application of the mask
3 OoB masks for
mobile-satellite service (MSS) earth and space stations
4 OoB masks for
broadcasting-satellite service (BSS) space stations
5 OoB mask for the
space research service (SRS), space operations service (SOS), and Earth
exploration‑satellite service (EESS) telecommunication space-to-Earth
links operating in the 1-20 GHz band
5.1
Introduction
5.2
OoB masks for SRS, SOS and EESS systems operating in the space‑to‑Earth
and Earth-to-space directions
5.2.1 Emission mask
parameters
5.2.2 Emission mask
applicability
5.2.3 Basis for the
emission masks
6 Standard
frequency and time signals (SFTS)services
6.1
SFTS services operating below 30 MHz
Annex 6 OoB domain emission limits for television
broadcasting systems
1 Digital TV � 6
MHz channelling to Recommendation ITU-R BT.1306
1.1
6 MHz DVB-T systems
1.2
6 MHz channelling ISDB-T systems
1.3
Other 6 MHz digital television systems
2 Spectrum masks
for 7 and 8 MHz channelling analogue and digital television systems
2.1
Analogue television systems
2.2
Digital television systems
2.2.1 7 and 8 MHz DVB-T
systems
2.2.2 7 and 8 MHz
ISDB-T systems
Annex 7 OoB domain emission limits for sound broadcasting
systems
1 VHF FM sound
broadcasting
2 Sound
broadcasting below 30 MHz
2.1
Digital Radio Mondiale systems
3 Digital sound
broadcasting
Digital System A
Annex 8 OoB domain emission limits for primary radar systems
1 Introduction
2 Necessary
bandwidth
2.1
Un-modulated radar pulses
2.2
Other modulations
2.3
Typical values of necessary bandwidth
3 OoB domain
emission limits for primary radars
3.1
Formulas for the 40 dB bandwidth
4 OoB mask
4.1
Examples of emission masks in terms of necessary bandwidth
4.2
Non-FM pulsed radar
4.3
Linear FM pulsed radar
4.4
Frequency hopping radar
5 Boundary between
the OoB and spurious domains
6 Design objective
7 Measurement
techniques
Annex 9 OoB domain emission limits for the amateur services
Annex 10 OoB domain emission limits land mobile radio
services
Annex 11 OoB domain emission limits for aeronautical-mobile
and maritime-mobile services
1 Aeronautical
telemetry
2 Other
aeronautical-mobile and maritime-mobile transmitters
Annex 12 OoB domain emission limits for the fixed service
1 Digital fixed
service: spectrum emission masks
1.1
Systems operating above 30 MHz
1.2
Systems operating below 30 MHz
2 Digital fixed
service: discrete spectral lines within OoB emission boundaries
2.1
Systems operating above 30 MHz
2.2
Systems operating below 30 MHz
3 Analogue fixed
service
Annex 13 OoB domain emission measurements
1 Measuring
equipment
1.1
Selective measuring receiver
1.1.1 Detectors of
measurement equipment
1.1.2 Resolution
bandwidths
1.1.3 Video bandwidth
1.1.4 Sweep time
1.2
Coupling device
1.3
Terminal load
1.4
Measuring antenna
1.5
Conditions of modulation
1.5.1 Analogue voice
modulation (e.g. A3E, F3E and J3E emission designators)
1.5.2 Digital modulation
(e.g. F1E, F7W, F9W, G1E, G7W, D7W emission designators)
1.5.3 Other modulations
1.5.4 Test input for
multicarrier channels
2 Measurement
limitations
2.1
Measurement time limitations
2.2
Time division multiple access signals
3 Methods of
measurement
3.1
Introduction
3.2
Method 1 � Measurement of the in-band and OoB
emission power supplied to the antenna port
3.2.1 Direct conducted
method
3.2.2 Substitution method
3.2.3 Specific
measurements
3.3
Method 2 � Measurement of the in-band and OoB
e.i.r.p.
3.3.1 Test sites for
radiated emission measurements
3.3.2 Direct method
3.3.3 Substitution method
Annex 14 Application of Recommendations ITU-R SM.1540 and
ITU-R SM.1541