technical. installation winegards system topics for training how to put three satellites on one...
TRANSCRIPT
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Technical
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Installation
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Winegard’s
SystemTopics for training
How to put three satellites on one cableHow to distribute a wide band signal
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The three satellites we are using
101° 110° 119°
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101°Satellite
• Has 32 transponders• Each 24 MHz wide• Circular polarity• 16 right hand 13Volt Odd Transponders• 16 left hand 18 Volt Even Transponders• Transmit at 12.1 GHz to 12.7 GHz
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110°Satellite
• Has 3 transponders numbers 8, 10, and 12• Each 24 MHz wide• Circular polarity• 3 left hand 18 Volt Even Transponders• Transmit at 12.1 GHz to 12.7 GHz
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• Has 11 transponders numbers 22-32• Each 24 MHz wide• Circular polarity• 5 right hand 13Volt Odd Transponders• 6 left hand 18 Volt Even Transponders• Transmit at 12.1 GHz to 12.7 GHz
119°Satellite
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The LNB
• Dual output LNB
• Down converted frequency 950 MHz to 1450 MHz
• Polarity selected by13 or 18 volts
• One needed per satellite (no Sat C Kit or LNB)
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Frequency Lineup
Numbers are in MHz
5 30/54 250 830/862/950 1450/1525 2025
(----------------L-Band------------)(----CATV Band----)(Sub-
Band)
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5 30/54 250 830/862/950 1450/1525 2025
Location of each Satellite and other services
(-----------------101°---------------)(110° / 119°)Digital Broadcast& Data
Data Return Path
The 101°bird is located from 950 MHz to 2025 MHz which includes both polarities
The 110° & 119° birds are located between 250 MHz & 830 MHz
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Local Digital Broadcast
5 30/54 250 830/862/950 1450/1525 2025
Channels 2-6 54 to 90 MHz
Channels 7-13 174 to 216 MHz
That gives us room for 12 local digital broadcast channels
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Satellite Usage for DirecTV®
• Ku-band 10.7GHz to 14.5GHz
• Ka-band 17.3GHz to 31.0GHz
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Tools of the Trade
MetersMDU Meter by Applied Instruments
Has full bandwidth from 5 MHz to 2150 MHz
Has special Triad® Menu to read transponders in the Cable bandwidth
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Tools of the Trade
MetersFSM 400 by Televes
Has full bandwidth from 5 MHz to 2150 MHz
Full spectrum Analyzer
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Tools of the Trade
ConnectorsUse Compression only
Maintains our integrity through the entire frequency spectrum from 5 MHz to 2150 MHz.
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Formulas
• dBm to dBmv 0 dBm = 48.75 dBmv• Input threshold of IRD- -55 to –35 dBm• RG-6 cable loss-9.34dB per 100 feet at 2Ghz• RG-59 cable loss-11.67dB per 100 feet at 2
Ghz• RG-11 cable loss –6.36dB per 100 feet at 2
Ghz
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FormulasLoop resistance
E=I x RE=voltage loss through cable runI=current being drawn through cable (in Amperes)R=loop resistance x cable length (in feet)
Example: Loop resistance of RG6 cable is .04 ohms per foot. RG11 is .02 ohms per ft. LNB uses .3 amp of current.
Operating voltage of LNB is 11-14V for right hand polarity 15.5-21V for left hand polarity
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Formulas• Loop resistance exercise• How much voltage is lost through 300 feet of RG6? • I=.3 Amp draw of LNB (300 mA)• R=.04 (loop resistance of RG6)x300 (length of cable
in feet)• E= (.3) x (.04 x 300) or E=3.6 volts• If we start with 18 volts for the left hand polarity and
we lose 3.6 volts, the result is 14.4 volts reaching the LNB. We need 15.5 volts for the left hand polarity to work, so the 18 volt side will only deliver the right hand polarity. NO LEFT HAND POLARITY!!!
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Cable Facts
DC voltage
50 MHz
450 MHz
950 MHz
1450 MHz
2050 MHz
Things that affect signal in cable are sharp bends, staples, cable ties, etc.
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Amplification
General rules
One of the most often mistakes is overloading the input to a amplifier. To figure out how much signal you can put into a amplifier you do the following:
Output – gain = input
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Amplification
Typically you can find the output and gain for the amplifier from the manufacturers specifications.
By overloading the input to a amplifier you will corrupt the data and the entire system will be down.
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The components
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101 110 119
To Distribution
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101 110 119
To Distribution
Local Digital Broadcast added
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Internet added
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Input and Output levels
Input 13 volt port
Input 18 volt port
Combined output
101° Satellite
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Input and Output levels110° & 119° Satellites
Input 110° 18 volt port
Input 119° 18 volt port
Input 119° 13 volt port
Input Off-air port
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Distribution
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Distribution W/Video, Voice & Data 5 MHz – 2150 MHz
5-225 MHz
250-2150 MHz
950-1450 MHz
5-225 MHz
950-1450 MHz
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Distribution just Video5 MHz – 2150 MHz
950-1450 MHz
950-1450 MHz