163/2008.
DECREE
of 30 March 2004. April 2008
about how to determine the coverage of the Earth tv
Czech Telecommunication Office lays down pursuant to § 150 of paragraph 1. 5 of law No.
127/2005 Coll., on electronic communications and amending certain
related laws (the law on electronic communications), as amended by
amended, (hereinafter referred to as the "Act") for the implementation of § 112 para. 4
This Act, as amended by Act No. 235/2006 Coll. and Act No 304/1997
Coll.:
§ 1
Definition of terms
For the purposes of this Ordinance, means the
and the surface of the digital television broadcasting) television broadcasting in
DVB-T signal for transmission over the radio channel is used
digital modulation scheme
(b)) the surface of the analog television broadcasting tv, when for
signal transmission over the radio channel is used by the analog modulation with
one partially suppressed the side band (AM-VSB)
c) radio channel part of the radio spectrum as defined by the following
follows:
1. in the television band 48.5-66 MHz for radio channel marked R1
defined to the Earth's analogue broadcasts a range of radio frequencies from the
48.5-56.5 MHz, for radio channel designated R2 defined to the Earth's
the analog broadcast radio frequency range 58-66 MHz,
2. in III. tv band 174-230 MHz for radio channel designated Rn
and defined to the Earth's analogue broadcasts a range of radio frequencies
from (174 + (n-6) 8) into (174 + (n-5). 8), in MHz, where n is equal to 6
up to 12,
3. in the IV. and in the television band 470-. 862 MHz for radio channel
marked n and defined to the Earth's analogue and digital broadcasting
a range of radio frequencies from (470 + (n-21) 8) into (470 + (n-20)
. 8) in MHz, where n is equal to 21 to 69, while the boundary between the IV. and in the.
the television zone of the upper frequency of the radio channel 34,
d) fixed receiving antenna directional antenna with a gain of at least 3.5 dB in
I. the television zone, 7 dB in III. the tv zone, 10 dB in the IV.
the tv zone and 12 dB in the television band, located outside the building in
the roof or outside built-up areas at a height of 10 m above ground level,
e) television receiver device technically eligible to individually
Optional tv signal reproduction regardless of how
intake of ^ 1)
f) standard reception apparatus:
1. for terrestrial analogue television broadcasting tv receiver
-61 dBm minimum sensitivity in the I and III. the tv zone and-58 dBm
in the IV. and in the television band. connected to a coaxial cable with an impedance
75. fixed receiving antenna
2. for terrestrial digital tv broadcasting tv receiver
minimum sensitivity-77 dBm connected to a coaxial cable with an impedance
75. fixed receiving antenna.
For standard receiving equipment for terrestrial analogue or digital
television broadcast and television receiver connected to the
cabling system ^ 2) ensuring a common reception of television
the broadcast,
(g) the broadcasting of the radio transmitter) a device designed for the distribution of the Earth's
analog tv broadcasts (hereinafter referred to as "analog transmitter") or
regional digital television broadcasting (hereinafter referred to as "digital
the transmitter "),
h) where the measuring point is measured the intensity of the electromagnetic
field and possible additional parameters of the tv signals and subjectively
evaluated the quality of the tv signal; measuring point is determined by the geographical
in the system of coordinates of the world geodetic reference system
1984 (WGS84) under a special legal regulation ^ 3), more detailed
description of the location and address, if it is for this place to be established
I) measuring Kit for measuring the intensity of the electromagnetic field
the set formed by the antenna the antenna factor is known (hereinafter referred to as "the measuring
antenna "), a measuring receiver or spectrum analyser (hereinafter referred to as
"measuring instrument") and coaxial cable with an impedance customized
the measuring antenna measuring instrument,
j) antenna factor constant given in dB, which is used to recalculate the
the values of the voltage measured at the terminal of a measuring instrument measuring antenna,
in dbµv, the intensity of the electromagnetic field, reported in
DB µV/m.
The intensity of the electromagnetic field
§ 2
(1) cover the territory of television broadcasting shall be assessed on the basis of
the identified values of the intensity of the electromagnetic field (hereinafter referred to as
"intensity") of the Earth's television broadcast signal.
(2) the signal strength of the regional broadcasters shall be determined in
the case of the
a) analogue broadcasting on the basis of the calculation, under the conditions referred to in article 4 and in
If the result of the calculation by measurements made in accordance with § 9, 10 and 11,
b) digital broadcasting on the basis of the calculation under the conditions of section 5 and the
If the result of the calculation by measurements made in accordance with § 9, 10 and 12.
§ 3
(1) for the purposes of calculation of the digital terrain model is used in the
100 x 100 m grid with triangle interpolation without thinking
morphology in particular buildings and crops.
(2) the calculation of the intensity of the signals transmitters, which honors are listed in
database of the Czech Telecommunications Office and whose traffic increases
the level of interference of the received signal over the territory (hereinafter referred to as the "known
interfering signals "). The famous interfering signals for the calculation are given by
technical parameters of the transmitters operated on the territory of the Czech Republic and
Foreign internationally coordinated analog or digital
the transmitters. In the calculation shall be considered only troposférické interference.
§ 4
Method of determining the intensity on the territory covered by the signal of the Earth
analog tv broadcasts by calculating the
The intensity calculation is performed with the following parameters
and the intensity values) the minimum useful signal Earth's analog
broadcasters are:
------------------------------------------------------------------------------
TV band radio frequencies Emin Range (dbµv/m)
------------------------------------------------------------------------------
I. 48.5-66 MHz 48
------------------------------------------------------------------------------
III. 174-230 MHz 55
------------------------------------------------------------------------------
IV. 470-65 582 MHz
------------------------------------------------------------------------------
In 582-862 MHz. 70
------------------------------------------------------------------------------
(b) the propagation of electromagnetic waves) curves are relative to the 50% of the seats,
50% of the time for the useful signal and for 50% of the seats, 10% of the time for cancellation
signal,
(c) fixed-income) of the receiving antenna,
(d)) with a correction factor on the characteristics of the terrain in the receive location
(clearance angle) (hereinafter referred to as "the correction factor for CA"); the correction factor
the CA must be included in the calculation method,
(e) the conditions for the calculation) and the analog tv signal interference
due to the digital tv signal are:
--------------------------------------------------------------------------------------------
Useful signal jamming signal radio channel Protection ratio (dB)
--------------------------------------------------------------------------------------------
analog digital the same 34
--------------------------------------------------------------------------------------------
analog digital neighbouring top-8
--------------------------------------------------------------------------------------------
analog digital adjacent bottom-9
--------------------------------------------------------------------------------------------
(f)) for calculating the interference protection ratios of analog television signal
caused by the analog tv signal are:
1. for the same radio channel:
--------------------------------------------------------------------------------------------------------------
Offset (in multiples of 1/12 of the line frequency) 0 1 2 3 4 5 6 7 8 9 10 11 12
--------------------------------------------------------------------------------------------------------------
Normal offset (stability +-500 Hz) 45 44 40 34 30 28 27 28 30 34 40 44 45
--------------------------------------------------------------------------------------------------------------
The exact offset (stability +-1 Hz) 32 34 30 26 22 22 24 22 22 26 30 34 38
--------------------------------------------------------------------------------------------------------------
2. for the adjacent radio channels:
--------------------------------------------------------------------------------------------
The neighbouring top-6 dB
--------------------------------------------------------------------------------------------
The adjacent bottom-9 dB
--------------------------------------------------------------------------------------------
§ 5
Method of determining the intensity on the territory covered by the signal of the Earth
digital television broadcasting by calculating the
The intensity calculation is performed with the following parameters
and the intensity values) the minimum useful signal Earth's digital
broadcasters are:
--------------------------------------------------------------------------
The range of radio channels Emin strength (dbµv/m)
--------------------------------------------------------------------------
5 - 6 48
--------------------------------------------------------------------------
7 - 9 49
--------------------------------------------------------------------------
10-12 50
--------------------------------------------------------------------------
21-22 52
--------------------------------------------------------------------------
23-30 53
--------------------------------------------------------------------------
31-38 54
--------------------------------------------------------------------------
39-47 55
--------------------------------------------------------------------------
48-58 56
--------------------------------------------------------------------------
59-69 57
--------------------------------------------------------------------------
(b) the propagation of electromagnetic waves) curves are relative to the 50% of the seats,
50% of the time for the useful signal and for 50% of the seats, 1% of the time for cancellation
signal,
(c) fixed-income) of the receiving antenna,
(d)) with a correction factor to the CA; the correction factor for the CA must be present in the
the method of calculation,
e) system variant of the regional digital television broadcasting is with
modulačním schema šedesátičtyřstavové quadrature amplitude
modulation (64-QAM), mode of operation with the number 6 817 bearing frequencies
(8 k), a code value indicative of the level of security transmission system
tolerance value of 2/3 and a guard interval for income
quiet multipath (unwanted reflections) and allowing
the use of the jednofrekvenčních networks of 1/4,
(f)) for calculating the interference protection ratios are:
------------------------------------------------------- --------------------
Useful signal jamming signal radio channel Protection ratio (dB)
------------------------------------------------------- --------------------
Digital digital the same 20
------------------------------------------------------- --------------------
Digital digital adjacent-30
------------------------------------------------------- --------------------
digital analog same 4.5
------------------------------------------------------- --------------------
digital analogue adjacent upper-38
------------------------------------------------------- --------------------
digital analogue adjacent bottom-35
------------------------------------------------------- --------------------
§ 6
Determining the coverage of the territory of the regional television broadcast signal
(1) the coverage of the territory, shall be determined on the basis of the calculation of intensity in the area,
whose boundaries correspond to the territorial subdivisions of the Czech Republic ^ 4) or
the borders of the geographical area ^ 5) (hereinafter referred to as "representative of the territory").
(2) the Interest of the territory is covered by the provincial television broadcasting if the signal
from one or more transmitters achieves
of the Earth) for the signal to analog tv broadcasts to greater intensity
or equal to the minimum intensity for income on fixed receiving antenna
pursuant to section 4 (b). and) and is respected the protective value of the ratio referred to in paragraph 4 of the
(a). e) and (f)),
(b)) for the Earth's digital tv signal intensity more
or equal to the minimum intensity for income on fixed receiving antenna
pursuant to section 5 (b). and) and is respected the protective value of the ratio according to § 5
(a). (f)).
(3) cover the territory of the regional television broadcast signal is given for the
the individual interest of the territory as the ratio of surface area covered by the
the surface of the tv and the total area of this area of interest
expressed as a percentage.
§ 7
Coverage of the population of the Earth-derived signal tv
(1) the assessment of the population covered by the signal of the Earth tv
the broadcast is carried out for each of the municipalities of the Czech Republic, taking
is based on the population of individual municipalities according to the Czech
the Statistical Office arising from the last census carried out by the
people ^ 6). In case of availability of up-to-date statistical data of the Czech
Statistical Office of the evaluation may be based on both of these
the current data.
(2) the assessment of the coverage of the population of the Earth's television signal
in the village of broadcast is carried out for each of the basic residential unit ^ 7)
assigned to the respective municipality. The population covered by the signal of the Earth
tv in the basic residential unit is determined by multiplying the
the proportion of the territory of the base settlement units covered by the signal of the Earth
tv to the total area of the territory of the base residential units and
the total population of the core residential units. The population of the
covered by the signal of the provincial tv in the village is determined as
the sum of the population covered by the provincial television broadcasting in
each of the basic settlement units in the village. The population of the
covered by the signal of the provincial tv in the village is usually
given as the ratio of the observed population covered by the signal of the Earth
tv in the village to the total population of the municipality, expressed in
percentage.
(3) the number of inhabitants covered by the Earth's television broadcast signal for
the entire Czech Republic, or a selected portion of the territory of the municipality is greater than
given the sum of the population covered by the signal of the provincial tv in
each municipality of selected parts of the territory. The population covered by the
the Earth's television broadcast signal is usually stated as a percentage
the observed population covered by the signal of the Earth tv
posting to the total population of the United States, or selected parts of the
the territory, expressed in percentage.
§ 8
Verify the results of the calculation of the measurement
(1) measurement to verify the result of the calculation shall be carried out in particular in the case of
and the signal from one assessment) transmitters in particular in marginal areas
the territory covered by the signal of the transmitter,
(b) assessment of the signal from multiple) transmitters especially in the rugged mountain
terrain, on parts of the territory of the shaded terrain obstacles, high
the buildings and the like.
(2) in cases in which the measurement was taken, are to assess the coverage of the
the territory of television signal standard signal strength measurement results
regional tv and subjective assessment of its quality.
§ 9
Measurement of the intensity and subjective assessment of the quality of the signal
(1) the measurement is done by measuring Kit with a measuring antenna and
a subjective rating of the quality of the signal shall be assessed on the tv
the receiver connected to the antenna for the evaluation of the quality of the signal.
(2) the minimum requirements on technical characteristics of measuring Kit and
setting gauges for measuring the signal strength of the Earth's
television broadcasts are listed in annex 1 of this order.
(3) the minimum requirements on the technical characteristics of television receivers
for a subjective rating of the quality of the signal of the Earth tv
are listed in Appendix 2 of this order.
(4) the procedure for making a subjective assessment of the quality of the signal
regional television broadcast is shown in annex 3 of this order.
(5) the measurement of subjective rating of the quality and intensity of the received
the Earth's television broadcast signals is carried out at the points of measurement.
(6) measuring points for the measurement of the intensity and a subjective rating of the quality of
the signal is selected with regard to the topography of the terrain and buildings in the village on the
places that are not in close proximity to obstacles or objects,
Sun screening direction to the transmitter, the signal of which is measured, and are not
influenced by the leadership of the 2nd metallic and other influences.
(7) the measurement of the intensity and subjective assessment of the quality of the signal is carried out
and at a height of 10 m) above ground level, if this Decree is not provided for
otherwise,
(b)) on the roofs of buildings in cases where high rise buildings border
exceeds a height of 10 m above ground level.
(8) in cases where the value of the measured intensity:
and for terrestrial analogue tv) broadcast less than the value of the intensity of
referred to in paragraph 4 (b). a), or
(b)) for terrestrial digital television is less than the value of the intensity of
referred to in paragraph 5 (b). and)
is to avoid measuring in a local minimum of the under the influence
multipath propagation of tv signals, should determine the maximum
the value of the horizontal positioning of the measuring antenna on the
at least 1 m. by directing the measuring antenna to the transmitter measured analog
tv or the signal with the best subjective quality evaluation
DVB-T signal is found by dependency on the intensity of the change the height measuring
antennas ranging from 5 m to 10 m from established values, the maximum
the value of the intensity.
(9) for each measuring point shall be the weight that
represents an estimate of the number of inhabitants of the municipality, expressed in percentage,
that a given measuring point represents. The weight for each measuring
point sets the measuring techniques during the measurement in the village; When determining the
weighting coefficient taking into account the data on population in
the basic residential unit assigned to the village. The sum of the
weightings of all measuring points in the village must be equal to 100%.
(10) information about the measuring point, date, time and other conditions of measurement shall
together with the measured values of the intensity data and data on subjective evaluation
the quality of the received signals of the Earth tv record
to a table a record of the measurements. The pattern of the table, the method of filling and
the format of the data is given in annex 4 of this order.
§ 10
Procedure for determining the number of measuring points
(1) the award shall be at least 5 measurement points to the selected measuring points
they represented the worst and the best projections for the receiving unit
for the measured signal. At the points of measurement measurements shall be taken
the intensity and the measured values shall be determined from the difference of the intensities according to the
formula:
Delta E = Enmax. -Enmin.
where is:
Delta E difference of intensity,
ENMAX. the maximum value of the measured intensity,
Enmin. the minimum value of the measured intensity.
(2) if the procedure laid down in paragraph 1, the value
a) delta E = 5 dB 5 dB, you have to choose the number of measurement points as follows:
1. If there is a delta E of 0 to 5 dB, is the number of measuring points
at least 5,
2. If there is a delta E 6 to 10 dB, is the number of measuring points
at least 7,
3. If there is a delta E 11 to 15 dB, is the number of measuring points
at least 15,
4. If there is a delta E of 16 to 20 dB, is the number of measuring points
at least 27.
In the case that is a delta E greater than 21 dB, it should be considered the territory of the
divide into smaller, independently adjudicated under.
§ 11
Measurement and evaluation of the coverage of the territory covered by the signal of the Earth
analog tv broadcasts
(1) for the purposes of the measurement is usually the territory of one of those involved in the territory of the community,
part of the base unit or the territory of the settlement.
(2) Measuring antenna is set up in the direction of maximum intensity of the measured
signal and antenna for a subjective quality evaluation is set up in
the direction of the best image.
(3) the Subjective assessment of the quality of the signal is carried out according to the procedure and under the
the scale set out in annex No 3 points and 2.
(4) the area around the measuring point is considered as covered if
the measured intensity reaches the minimum intensity values according to annex No.
3 points and 1. and the subjective assessment of the quality of the signal is in the range of degrees
Q3-Q5 according to annex No 3 points and 2. of this order.
(5) in the case that this is a measurement on the roofs of buildings in accordance with § 9 para.
7 (b). (b)), is an area in the vicinity of the measuring point regarded as covered,
If the measured intensity reaches the minimum intensity according to the
Annex No. 3 point and 1. and the subjective assessment of the quality of the signal is
and for the purposes of Group income) rated the least degree of Q4,
(b)) for the purposes of individual income rated the least degree of Q3
According to annex No 3 points and 2. of this order.
(6) the resulting coverage area is given as a percentage of each
covered by the measuring points of the total number of measuring points.
§ 12
Measurement and evaluation of the coverage of the territory covered by the signal of the Earth
digital television broadcasting
(1) for the purposes of the measurement is usually the territory of one of those involved in the territory of the community,
part of the base unit or the territory of the settlement.
(2) Measuring antenna is set up in the direction from which the signal is received
regional digital tv with the best subjective
the evaluation of quality.
(3) on the measuring point is checked on the Spectrum Analyzer, the shape of the spectrum
the received signal. In the case that measured measuring
the receiver, the measurement of the modulation error rate (MER), where appropriate
bit error rate (BER).
(4) the area around the measuring point is considered as covered if
the measured intensity reaches the minimum intensity values under section 5 (b).
and subjective rating) and the quality of the signal is in the range of degrees up to Q3 Q5
According to annex No 3 point (B) 1. of this order.
(5) in the case that this is a measurement on the roofs of buildings in accordance with § 9 para.
7 (b). (b)), is an area in the vicinity of the measuring point regarded as covered,
If the measured intensity reaches the minimum intensity according to § 5
(a). and subjective rating) and the signal quality is
and for the purposes of Group income) rated the degree of Q5,
(b)) for the purposes of individual income rated the least degree of Q3
According to annex No 3 point (B) 1. of this order.
(6) the resulting coverage area is given as a percentage of each
covered by the measuring points of the total number of measuring points.
section 13 of the
Evaluation of the population covered by the signal of the Earth tv
broadcast
(1) the population of the area covered by the signal of the Earth
television broadcasts from the measured values of the intensity and subjective
evaluation of the quality of the signal determines according to the formula:
P = sum (vi). PI [%],
I = 1 ... n
where is:
P the number of inhabitants of the area covered by a regional television broadcast signal
(n) the number of sampling points,
(vi) the weight determined in accordance with § 9 para. 9,
PI value expressing the coverage of the area represented by the measuring point of the Earth's stanovenápro
analog television broadcasts according to § 11 para. 4 and 5, or for terrestrial digital tv
broadcasting pursuant to § 12 para. 4 and 5. This value is equal to the
and for measuring site) 0 uncovered, or
(b)) 1 for the location of the Earth's coverage of television broadcasting.
(2) the number of inhabitants covered by the provincial television broadcasting in
the territory of greater than the interest of the territory, is given by the sum of the number of inhabitants
covered in the individual interest areas.
§ 14
The effectiveness of the
This Decree shall enter into force on the fifteenth day following the date of its publication.
The President of the Council of the Czech Telecommunications Office:
PhDr. Dvorak, CSc. v. r.
Annex 1
The minimum requirements for the technical characteristics of measuring Kit and settings
of measuring instruments for measuring the signal strength of the Earth tv
broadcast
1. The measuring set for measurement signal analog tv broadcasts
must comply with the following parameters.
1.1 measuring instrument
------------------------------------ -------------------------
frequency range of 47-862 MHz
------------------------------------ -------------------------
the level of measurement accuracy +/-2.0 dB
------------------------------------ -------------------------
level measurement range 0-120 dBmikroV
------------------------------------ -------------------------
An optional minimally IFBW in the range of 100-300 kHz
------------------------------------ -------------------------
PK, AV detector
------------------------------------ -------------------------
Suppression of mirror frequencies > 70dB
------------------------------------ -------------------------
Suppression of intermediate frequency signal > 70 dB
------------------------------------ -------------------------
input impedance 50 (75) omega
------------------------------------ -------------------------
operating temperature 5-45th. (C)
------------------------------------ -------------------------
1.2 Measuring antenna
-------------------- --------------
frequency range of 47-862 MHz
-------------------- --------------
output impedance 50 (75) omega
-------------------- --------------
operating temperature-15-45th. (C)
-------------------- --------------
For the measurement of the measuring point is it's directional antenna.
2. The measuring set for measuring digital tv signal
must comply with the following parameters.
2.1 measurement device
--------------------------- -----------------------------
frequency range 174-862 MHz
--------------------------- -----------------------------
the level of measurement accuracy +/-2.0 dB
--------------------------- -----------------------------
level measurement range 20-100 dBmV
--------------------------- -----------------------------
intermediate frequency bandwidth automatically optional according to the
channel spacing grid 7/8 MHz
--------------------------- -----------------------------
RMS Detector
--------------------------- -----------------------------
Suppression of mirror > 70 dB
frequencies
--------------------------- -----------------------------
Suppression of intermediate frequency > 70 dB
signal
--------------------------- -----------------------------
input impedance 50 (75) omega
--------------------------- -----------------------------
operating temperature 5-45th. (C)
--------------------------- -----------------------------
2.2 Measuring antenna
-------------------- ---------------
frequency range 174-862 MHz
-------------------- ---------------
output impedance 50 (75) omega
-------------------- ---------------
operating temperature-15-45th. (C)
-------------------- ---------------
For the measurement of the measuring point is it's directional antenna.
3. Set the measuring instrument for measuring the intensity of the
3.1 Measurement signals to analog tv broadcasts (AM-VSB)
3.1.1 setting the basic parameters of the Spectrum Analyzer:
--------------- ---------------------------
the bandwidth of 300 kHz
RBW resolution
--------------- ---------------------------
detector PK
--------------- ---------------------------
the track max. tribute
--------------- ---------------------------
span 10 MHz
--------------- ---------------------------
SWP 200 ms
--------------- ---------------------------
correction value of attenuation of antenna
coaxial cable
--------------- ---------------------------
3.1.2 Setting the basic parameters of the measuring receiver:
Set the peak detector-PK
Intermediate frequency bandwidth IFBW-100-300 kHz
The above listed parameters the measuring receiver is usually automatically sets the
When you select the analog tv function measure (AM-VSB).
3.2 Measurement signals digital tv DVB-T
3.2.1 the measurement is performed as an integration measure, i.e. measurement in
the entire bandwidth of the DVB-T signal for spectral analyzers "performance
at channel "or other measuring instruments corresponding settings in the
parameters. You use this function, the parameters of the measuring apparatus
as a rule, are set automatically. In the case that you are not automatically
setting the parameters of the measuring apparatus must be set manually
the following parameters:
--------------- -----------------------------------
7.61 MHz bandwidth
RBW resolution
--------------- -----------------------------------
RMS Detector
--------------- -----------------------------------
track C/W or AVG
--------------- -----------------------------------
span 10 MHz recommended
--------------- -----------------------------------
SWP 200 ms (for a more stable record
You can even 500 ms)
--------------- -----------------------------------
correction value of attenuation of antenna
coaxial cable
--------------- -----------------------------------
3.2.2 when using measuring devices, which allow only measurements with
resolution bandwidth (RBW) (hereinafter referred to as "RBW") or low-
band intermediate frequency (IFBW), must be the parameters of the measuring apparatus
set as follows:
------------ ---------------------------------
RMS Detector
------------ ---------------------------------
track C/W or AVG
------------ ---------------------------------
span 10 MHz recommended
------------ ---------------------------------
SWP 200 ms (for a more stable record
You can even 500 ms)
------------ ---------------------------------
correction value of attenuation of antenna
coaxial cable
------------ ---------------------------------
To ensure maximum measurement accuracy must be RBW is set to
the highest value that the measuring device enables you to. Medium frequency, on the
where the measurement is carried out, must be determined having regard to the shape of the spectrum
throughout the radio channel, especially when rozvlnění signal due to the Crown
reflections so that measurement of the mean value of the measured signal represented.
The resulting intensity is determined depending on the correction for the RBW
According to the relation:
EDVB-T = Enam K1 K2 [dBmV/m, dBmV/m, dB, dB]
where is:
Enam measured intensity [dBmV/m]
K1 = 10. log (7.61/RBW) [dB]
K2 = 0.3 [dB] correction for the conversion of noise measuring bandwidth
the appliance
Note: the value of the RBW must be specified in MHz.
List of abbreviations:
and throughput width IFBW)-intermediate frequency selective filter
the measuring receiver,
(b)) has a throughput-the width of the RBW filter sweeps
the parser,
(c)) swp-positioning time range at which the spectral Analyzer set from
the lowest to the highest frequency display (sweep time),
(d))-frequency range setting span a Spectrum Analyzer,
the difference between the lowest and the highest frequency of the display,
e) detector PK-tv signal peak value detection,
f) detector AV-detection of the mean values of the tv signal,
g) RMS Detector-RMS detection in the tv signal,
h) C/W track-record of the current course of the transcript of the previous signal
After each time the overrun (erasing/writing-Clear/Write),
I) track-record digitally AVG průměrovaného signal (Averaging)
j) max. hold-record maximum values of the signal for all the time
measurement,
to the resolution of SDTV-marking) the image quality of digital television, which
corresponds to the quality of the broadcast analog television PAL D, K.
Annex 2
The minimum requirements for the technical characteristics of television receivers for
a subjective rating of the quality of the signal of the Earth tv
The minimum requirements for the technical characteristics of television receivers are
for
1. the evaluation of analog tv signals (AM-VSB)
1.1 tv receiver
--------------------- --------------
frequency range of 47-862 MHz
--------------------- --------------
sensitivity VHF band-61 dBm
--------------------- --------------
the sensitivity of the UHF band-58 dBm
--------------------- --------------
diagonal display > 14 "
--------------------- --------------
> contrast 500:1
--------------------- --------------
brightness 300 cd/m2 >
--------------------- --------------
response (LCD) = < 8 ms
--------------------- --------------
resolution SDTV
--------------------- --------------
shows Teletext on OSD
---------------------- -------------
SCART connector
---------------------- -------------
Note: for a subjective evaluation of the monitor can also be used with the internal
or external PC cards, which ensures compliance with these requirements.
1.2 the receiving antenna
The receiving antenna for a subjective rating of the quality of the signal of the Earth
analog tv broadcasts is the directional antenna with a gain of at least:
------------- ------------------- ----------
antenna gain frequency range TV zone
------------- ------------------- ----------
3.5 dB 48.5-66 MHz.
------------- ------------------- ----------
7 174-230 MHz dB III.
------------- ------------------- ----------
10 dB 470-582 MHz (IV).
------------- ------------------- ----------
12 dB 582-862 MHz.
------------- ------------------- ----------
Receiving antenna must be connected to tv coax
low impedance matching cable attenuation and high-quality shielding.
2. evaluation of digital television signals (DVB-T)
2.1 television receiver
For subjective assessment of the quality of the signals of the digital earth
the television broadcast for the purposes of measurement, you can use the standard coverage
a television receiver that meets basic technical parameters
standard ČSN EN 62216-1.
2.2 receiving antenna
The receiving antenna for a subjective rating of the quality of the signal of the Earth
digital tv antenna with the characteristics referred to in point
1.2.
Annex 3
A subjective rating of the quality of the signal of the Earth tv
Subjective assessment of the quality of the signal analog tv broadcasts
is based on the measured values of the intensity and the detected interference.
A. the minimum signal analog tv broadcasts
1. for the purpose of measuring the coverage of the Earth's analog tv
the broadcast are the minimum intensity protected against interference and minimum
effort for the space without the interference of the following:
---------------------- -------------------
TV zone i. III. IV. IN.
---------------------- -------------------
Emin (dBmV/m) 48 55 65 70
---------------------- -------------------
Ebez interference (dBmV/m) 40 43 55 58
---------------------- -------------------
2. The Subjective assessment of the quality of the signal
When the subjective assessment of the quality of the Earth's analog signals
broadcasters shall take account of the vulnerability of this signal on the
degradation, depending to a large extent on the antenna gain (distance c/n) and
its directionality (interference, multipath signals, interference from
other high-frequency signals). For these reasons, must be used
antenna with a minimum of parameters according to § 1 (1). 1 (b). d) Admissions
antenna measuring Kit is the azimuth to the maximum intensity.
In the event that the signal is degraded by interference, the azimuth of the receiving
antenna to a minimum of interference. This observation is recorded in the form of
Notes to the tables of measured values.
For the subjective assessment of the quality of the signal, it's a five-
Reviews:
------- --------------------- --------------------------------
the degree of the quality evaluation of the degradation of the quality of
------- --------------------- --------------------------------
Q5 excellent unobservable
------- --------------------- --------------------------------
Q4 good observable, but non-intrusive
------- --------------------- --------------------------------
Q3 good slightly annoying
------- --------------------- --------------------------------
Q2 poor annoying
------- --------------------- --------------------------------
Q1 poor very annoying
------- --------------------- --------------------------------
The degree of interference is evaluated according to the following degrees:
-------------------------------------------
the degree of degradation of the quality of
interference
-------------------------------------------
R1 observable, but non-intrusive
-------------------------------------------
R2 slightly annoying
-------------------------------------------
R3 annoying and very annoying
-------------------------------------------
The degree of disturbance shall be supplemented by the following indication type of degradation:
----------------------------------------
0 reflections
----------------------------------------
w noise
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and interference
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(d) interference signal of digital television
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p industrial interference
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of distortion
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n other degradation (write in notes)
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For the overall assessment of the quality of the signal of the measuring point is based on the
the intensity and effects (degradation). The coherence between the degree of
a subjective assessment of the quality, intensity and interference is defined
in the following table:
-------- --------------------------------------------
the degree of intensity of interference
-------- --------------------------------------------
Q5 E > = Emin no interference
-------- --------------------------------------------
Q4 E > = Emin interference R1
-------- --------------------------------------------
Q3 E > = Emin interference R2
-------- --------------------------------------------
Q3 E = Ebez > interference no interference or R1
-------- --------------------------------------------
Q2 E > = Emin interference R3
-------- --------------------------------------------
Q2 E = Ebez > disturbance R2
-------- --------------------------------------------
Q2 E < Emin no interference, R1 or R2----------------------------------------------------Q1 E > = Ebez disturbance R3
-------- --------------------------------------------
Q1 E < Ebez disturbance R2
-------- --------------------------------------------
Q1 E < Ebez no < disturbance
-------- --------------------------------------------
(B). The minimum values of signal digital television broadcasting
1. for the purpose of measuring the Earth's digital tv coverage
broadcast shall apply minimum intensity values listed in section 5 (b). and)
of this order.
2. subjective quality evaluation For signal shall apply the following
3-tier rating:
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Q1 quality poor, frequent outages,
receiver nezasynchronizuje
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Q3 quality good, single instantaneous
failure (see text)
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Q5 quality excellent, unobservable
defects in the quality of image and sound
---------------------------------------
Time monitoring the quality of video and audio on the program of the measured
Multiplex is a minimum of 3 minutes. In the case of an individual
mžikového failure it is necessary to focus on the findings of its resources (on the
increased error rate has the effect of low intensity, pulse or other interference
the high-frequency signal, etc.). When you record this phenomenon on more
points in the measured site without logical explanation of the low c/n apart
they must make a detailed analysis of the causes of the degradation of the digital signal
the television broadcast.
3. When assessing the quality of digital tv signal
According to the options used measuring devices measure one of the parameters
the defining quality of a decoded x.509 OFDM signal objectively.
3.1 Measurement error rate BER before the Viterbi decoder is carried out where the
measures the error rate streaming prior to correction, or for
Viterbi decoder, where the measured error rate after correction of isolated errors
in the data flow. For the purposes of measuring the quality of the digital signal
tv is usually measured BER for the Viterbi decoder, where
the reference value for trouble-free reception is BER < 02 E-04 Modulation error rate MER 3.2 is the parameter that comprehensively evaluates the quality of the received signal (peak modulation DVB-T signal error). Recommended value for trouble-free reception is MER > = 22 dB.
Annex 4
The pattern table to record measurements
1) § 2 (2). 2 Act No. 348/2005 Coll., on radio and television
fees and amendment to certain laws.
2) § 2 (2). 1 (b). in) of Act No. 231/2001 Coll., on the operation of
radio and television broadcasting, and amending other laws, as amended by
amended.
3) Government Regulation No. 430/2006 Coll., on the establishment of surveying
reference systems and the national map works on the territory of the State and mandatory
the principles of their use.
4) Act No. 36/1960 Coll. on territorial subdivisions of the State, as amended
regulations.
5) section 3 of Decree-Law No 157/2008 Coll., on the technical transition plan
the Earth's analog tv broadcasts on digital terrestrial television
(Government regulation on the technical transition plan).
6) section 12 of Act No. 89/1995 Coll., on State statistical service, as amended by
amended.
7) § 2 (b). s) Act No. 89/1995 Coll., as amended.
