DD HD channel in the packet DD Doordarshan India_MPEG-4/HD/FTA_1920x1080 : first uncoded HDTV broadcast in the C band of satellite Insat 4B - 93.5°E and results of measurements of the central European zone
DD HD channel in the packet DD Doordarshan India_MPEG-4/HD_1920x1080 :
first uncoded HDTV broadcast in the C band of satellite Insat 4B - 93.5°E and results of
measurements of the central European zone
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a,Insat 4B at 93.5°E - DD HD in the packet DD Doordarshan : installed system,elevation limit,footprint,coverage area
b,Insat 4B at 93.5°E - DD HD in the packet DD Doordarshan : spectral analysis of the horizontal vector+full range
c,Insat 4B at 93.5°E - DD HD in the packet DD Doordarshan : results of quality measurement and reception conditions
d,Insat 4B at 93.5°E - DD HD in the packet DD Doordarshan : 3 725 H-QPSK constellation diagram
e,Insat 4B at 93.5°E - DD HD in the packet DD Doordarshan : video recording of spectrum analysis and carrier lock with DD HD
f,Insat 4B at 93.5°E - DD HD in the packet DD Doordarshan : analysis of the spectrum and quality of the antenna assembly
g,Insat 4B at 93.5°E - DD HD in the packet DD Doordarshan : snapshots of HD video broadcasting
h,Insat 4B at 93.5°E - DD HD in the packet DD Doordarshan : video preview of HD broadcasts from India
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a,DD HD in the packet DD Doordarshan : installed system,elevation limit,footprint,coverage area
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Insat 4B at 93.5°E - 4B wide footprint : measurements at the center Lučenec_central Slovakia
geographical location : Latitude: 48.33° _ Longitude: 19.72°
measurement results are derived from the 3.7 m diameter antenna
date of measurement : 2.10.2010
elevation angle : only 2.0°
Insat 4B : wide footprint Insat 4B : installed system Insat 4B : research & measurement
coverage area PF Prodelin 3.7 m town Lučenec / Slovakia
Asia , Middle East , Europe LNB Norsat 8215 48.33° _ 19.72°
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--- Insat 4B at 93.5°E : geographical limit for the possibility of receiving satellite the size of the elevation angle ---
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b,DD HD in the packet DD Doordarshan : spectral analysis of the horizontal vector+full range
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--- Insat 4B at 93.5°E: 3 725 H DD HD in the packet DD Doordarshan-spectral analysis _ 2.10.2010 ---
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--- Insat 4B at 93.5°E:3 725>3 841>3 885>3 925 H active carriers in the range of H vector at 9.30 o'clock ---
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c,DD HD in the packet DD Doordarshan : results of quality measurement and reception conditions
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--- DD HD channel in the packet DD Doordarshan India : MER=11.9 dB - N.MAR=+5.5 dB ---
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DD HD : XIX Commonwealth games DD HD : quality analysis DD HD : NIT
current reception status in Central Europe, after a significant decline in transmission power of 7.7.2010:
___ reception status of 2.10.2010 ___
3 725 H : Cyclically changing amplitude of quality ranging from 10.5 to 12.5 dB with a three-hour peak in quality to
the level of MER=14 dB,with full detection stability.Twenty-minute time frame defined cyclically recurring changes from
peak-high/MER=12.5 dB to peak-low/MER=10.5 dB.After the inclusion of HD transmission of the packet I have not
identified even once the ideal status of quality at bBER<10-6 and level of quality measurements in place fell on average
by 2 dB.In the last analysis that I have performed on 24.7.2010,the time frame of twenty minutes, often occurring
situation that lasted several minutes during which the error rate bBER did not fall below the bBER = <10-6.
In contrast with the second packet from the network DD Doordarshan at f=3 925 H I also currently identified
several ideal status of quality in bBER = <10-6 _ MERp=16.5 dB .
___ reception status of 27.7.2010 ___
3 725 H : constantly alternating gain margin in a wide range of amplitudes from 5 dB_MER=10 dB
to 13 dB_MER=18+ dB.In the field of measurement and analysis of the quality is regularly repeated qualitative state
of absolute zero error rate BER before Viterbi decoder >>> MER=15 + dB direct link to bBER=0 .
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d,DD HD in the packet DD Doordarshan : 3 725 H-QPSK constellation diagram
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--- DD HD channel in the packet DD Doordarshan India : QPSK constellation diagram ---
QPSK constellation diagram of the date of 3.10.2010 QPSK constellation diagram of the date of 27.7.2010
typical error rate bBER : < 1 - 4x10-4 typical error rate bBER : < 1 - 2x10-6
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e,DD HD in the packet DD Doordarshan : video recording of spectrum analysis and carrier lock
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--- 3 725 H : DD HD India _ LIVE spectral analysis,carrier lock,NIT with the analyzer Unaohm AP 201 S ---
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--- 3 725 H : DD HD India _ LIVE spectral analysis,carrier lock,NIT with the analyzer ROVER DM16 4HD Digimax ---
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f,DD HD in the packet DD Doordarshan : analysis of the spectrum of the antenna assembly
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___ Mr. Roman Dávid as the founder of the dxsatcs.com think-tank in action ___
--- 3 725 H DD HD India : analysis of the spectrum and quality of the antenna assembly ---
! only one carrier of the spectrum !
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--- 3 725 H DD Doordarshan , 3 885 H SUN Network , 3 925 H DD Doordarshan ---
analysis of the spectrum and quality of the antenna assembly
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Of course, the scalar rings and the quality of reception there is no relationship and the same results
I achieved without ring / this holds true for this type of antenna .
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g,DD HD in the packet DD Doordarshan : snapshots of HD video broadcasting
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--- Commonwealth Games India 2010 : last action before the start ---
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h,DD HD in the packet DD Doordarshan : video preview of HD broadcasts from India
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Roman Dávid - author & founder
mail : roman.david@dxsatcs.com