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Drake
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SCT2x4 BBT
User Manual
18 pgs1.2 Mb0

Drake SCT2x4 BBT User Manual

SCT2x4 Headend Transcoder - 2 Sat / 4 QAM
Instruction Manual
is a registered trademark of the R.L. Drake Holdings LLC
© Copyright 2012 R. L. Drake Holdings, LLC P/N: 651229200A Printed in the USA.
Rev: 20121112 1002550
2
Table of Contents, Caution, & Important Safety Instructions
IMPORTANT SAFETY INSTRUCTIONS ..............................................................................................................2
SPECIFICATIONS ................................................................................................................................................4
INSTALLATION AND MOUNTING / FRONT PANEL CONTROLS .......................................................................6
SETUP AND PROGRAMMING .............................................................................................................................8
ADDITIONAL INFORMATION ...............................................................................................................................10
CHANNEL FREQUENCY CHARTS ..................................................................................................................... 11
SERVICE/IF YOU NEED TO CALL FOR HELP ...................................................................................................15
WARRANTY ..........................................................................................................................................................17
Caution Statements:
WARNING: TO PREVENT FIRE OR
ELECTRICAL SHOCK, DO NOT
EXPOSE TO RAIN OR MOISTURE
WARNING: TO REDUCE THE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE THIS PRODUCT TO
RAIN OR MOISTURE. DO NOT OPEN THE CABINET, REFER SERVICING TO QUALIFIED PERSONNEL ONLY.
CAUTION: TO PREVENT ELECTRIC SHOCK, DO NOT USE THIS (POLARIZED) PLUG WITH AN EXTENSION
CORD RECEPTACLE OR OTHER OUTLET UNLESS THE BLADES CAN BE FULLY INSERTED TO PREVENT BLADE EXPOSURE.
A product and cart combination should be moved with care. Quick stops, excessive force and uneven surfaces may cause the product and cart combination to overturn.
The lightning flash with arrow head symbol, within an equilateral triangle, is intended to alert the user to the presence of uninsulated "dangerous voltage" within the product's enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons.
The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the product.
ATTENTION: POUR PREVENIR LES CHOCS ELECTRIQUES, NE PAS UTILISER CETTE FICHE POLARISEE
AVEC UN PROLONGATEUR, UNE PRISE DE COURANT OU UNE AUTRE SORTIE DE COURANT, SAUF SI LES LAMES PEUVENT ETRE INSEREES A FOND SANS EN LAISSER AUCUNE PARTIE A DECOUVERT.
Important Safety Instructions:
1. Read Instructions: All the safety and operating instructions should be read before the product is operated.
2. Retain Instructions: The safety and operating instructions should be retained for future reference.
3. Heed Warnings: All warnings on the product and in the operating instructions should be adhered to.
4. Follow Instructions: All operating and use instructions should be followed.
5. Cleaning: Unplug this product from the wall outlet before cleaning. Do not use liquid cleaners or aerosol cleansers. Use a damp cloth for cleaning.
6. Attachments: Do not use attachments that are not recommended by the product manufacturer as they may cause hazards.
7. Water and Moisture: Do not use this product near water—for example, near a bathtub, wash bowl, kitchen sink or laundry tub; in a wet basement;
or near a swimming pool; and the like.
Important Safety Instructions (continued)
8. Accessories: Do not place this product on an unstable cart, stand, tripod, bracket, or table. The product may fall, causing serious injury to a child
or adult, and serious damage to the product. Use only with a cart, stand, tripod, bracket, or table recommended by the manufacturer, or sold with the product. Any mounting of the product should follow the manufacturer's instructions, and should use a mounting accessory recommended by the manufacturer.
9. A product and cart combination should be moved with care. Quick stops, excessive force, and uneven surfaces may cause the product and cart
combination to overturn.
10. Ventilation: Slots and openings in the cabinet are provided for ventilation and to ensure reliable operation of the product and to protect it from
overheating, and these openings must not be blocked or covered. The openings should never be blocked by placing the product on a bed, sofa, rug, or similar surface. This product should not be placed in a built-in installation such as bookcase or rack unless proper ventilation is provided or the manufacturer's instructions have been adhered to.
11. Power Sources: This product should be operated only from the type of power source indicated on the marking label. If you are not sure of the type
of power supplied to your home, consult your product dealer or local power company. For products intended to operate from battery power, or other sources, refer to the operating instructions.
12. Grounding or Polarization: This product may be equipped with a polarized alternating-current line plug (a plug having one blade wider than the
other). This plug will fit into the power outlet only one way. This is a safety feature. If you are unable to insert the plug fully into the outlet, try reversing the plug. If the plug should still fail to fit, contact your electrician to replace your obsolete outlet. Do not defeat the safety purpose of the polarized plug. Alternate Warnings – If this product is equipped with a three-wire grounding- type plug, a plug having a third (grounding) pin, the plug will only fit into a grounding-type power outlet. This is a safety feature. If you are unable to insert the plug into the outlet, contact your electrician to replace your obsolete outlet. Do not defeat the safety purpose of the grounding-type plug.
13. Mise à la terre ou Polarisation: Cet appareil est équipé avec un cordon d'alimentation à trois fils. Il est a brancher sur une prise ayant un connecteur
a la terre. Assurez-vous que la connection a la terre ne manque pas.
14. Power-Cord Protection: Power-supply cords should be routed so that they are not likely to be walked on or pinched by items placed upon or against
them, paying particular attention to cords at plugs, convenience receptacles, and the point where they exit from the product.
15. Lightning: For added protection for this product during a lightning storm, or when it is left unattended and unused for long periods of time, unplug it
from the wall outlet and disconnect the antenna or cable system. This will prevent damage to the product due to lightning and power-line surges.
16. Power Lines: An outside antenna system should not be located in the vicinity of overhead power lines, other electric light or power circuits, where it
can fall into such power lines or circuits. When installing an outside antenna system, extreme care should be taken to keep from touching such power lines or circuits as contact with them may be fatal.
17. Overloading: Do not overload wall outlets, extension cords, or integral convenience receptacles as this can result in a risk of fire or electric shock.
18. Object and Liquid Entry: Never push objects of any kind into this product through openings as they may touch dangerous voltage points or short-out
parts that could result in a fire or electric shock. Never spill liquid of any kind on the product.
19. Servicing: Do not attempt to service this product yourself as opening or removing covers may expose you to dangerous voltage or other hazards.
Refer all servicing to qualified service personnel.
20. Damage Requiring Service: Unplug this product from the wall outlet and refer servicing to qualified service personnel under the following conditions:
a) When the power-supply cord or plug is damaged, b) If liquid has been spilled, or objects have fallen into the product, c) If the product has been exposed to rain or water, d) If the product does not operate normally by following the operating instructions.
Adjust only those controls that are covered by the operating instructions as an improper adjustment of other controls may result in damage and will
often require extensive work by a qualified technician to restore the product to its normal operation, e. If the product has been dropped or damaged in any way, and f. When the product exhibits a distinct change in performance—this indicates a need for service.
21. Replacement Parts: When replacement parts are required, be sure the service technician has used replacement parts specified by the manufacturer
or have the same characteristics as the original part. Unauthorized substitutes may result in fire, electric shock or other hazards.
22. Safety Check: Upon completion of any service or repairs to this product, ask the service technician to perform safety checks to determine that the
product is in proper operating condition.
23. Wall or Ceiling Mounting: The product should be mounted to a wall or ceiling only as recommended by the manufacturer.
24. Heat: The product should be situated away from heat sources such as radiators, heat registers, stoves, or other products (including amplifiers) that
produce heat.
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4
Specications
RF OUTPUT
Frequency range: 54 MHz to 1002 MHz. Standard CATV, HRC, IRC, or Broadcast channel plans are supported.
Frequency stability: ± 5ppm
Phase noise: - 101 dBc/Hz @ 10 kHz offset
Output level: + 55 dBmV / channel
Output level display accuracy: ± 1 dB
Output level stability: ± 1 dB
Output level adjustment range: + 45 dBmV to + 56 dBmV nominal output level.
Output impedance: 75 ohm, return loss = 14 dB
Modulation modes: CW, QAM - 16A, 32A, 64A, 128A, 256A, 512A, 1024A, 64B, 256B, 1024B
QAM symbol rate: 1 MS/s to 7 MS/s
Spurious: - 60 dBc, 5 MHz to 1002 MHz
Broadband noise: - 69 dBc @ 6 MHz bandwidth, equivalent to - 75 dBc for a single channel.
QAM I/Q phase error: < 1 degree.
Channel amplitude error: < 1 dB
Carrier suppression: > 45 dB
MER: > 40 dB with blind equalizer
SATELLITE INPUTS
Frequency range: 950 MHz to 2150 MHz
Input impedance: 75 ohm, return loss = 10 dB
Input level range: - 25 dBm to - 65 dBm / transponder.
Input level matching: Input levels between the two inputs should be within 15 dB for optimum performance
Mode: QPSK, 8PSK
FEC: DVB-S2
Symbol Rate: 2 MS/s to 30 MS/s
LNB Power: +18V ± 10%, 500 mA maximum total of both inputs
ASI OUTPUTS
ASI INPUT
RS232
Maximum loop length: 10 units
GENERAL
Operating Temperature: 0 to + 50 degrees Celsius
Impedance: 75 ohms
Data Rate: 270 Mb/s
Impedance: 75 ohm
Data Rate: 270 Mb/s
Cable Length: 1000 ft. maximum
Data Rate: 2400, 4800, 9600, or 19200 baud.
Power: 90 to 132 VAC / 60 Hz, 85 Watts
Size: 19" W x 3.5" Hx 21.5" D
Weight: 16 pounds
Specifications subject to change without notice or obligation.
General Description
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2 SATELLITE DEMODS
The SCT2X4 is a Satellite to Cable Transcoder that includes two satellite tuners and demodulators that are independently tuned and demodulate two satellite transponders. Each tuner has its own L band input so that choices are not limited to one polarity or satellite.
The SCT2X4 is designed mainly to recover MPEG2 or H.264 video from the satellite downlinked transmissions. This model is configured to receive 8PSK modulation with DVB-S2 FEC.
3 MULTIPLEXING AND GROOMING
After demodulation, the correct programs will be directed to the correct QAM channels automatically based upon the transponder selection. SAT 1 programs are directed to QAM1 and QAM 2 while SAT 2 programs are directed to QAM3 and QAM 4.
4 QAM MODULATORS
The data rates are such that when the satellite transmissions are 8PSK with DVB-S2 FEC, the programs from two transponders will usually require four QAM output channels if all programs are selected. Four high performance QAM modulators, with up to + 55 dBmV output level per QAM, after combining of the 4 QAMs, are included.
The SCT2X4 does not alter the scrambling that is likely to be in place on the program streams. The scrambled streams pass intact through the transcoder and are delivered to the set top box where the descrambling will occur.
The SCT2X4 does provide a data output that can be used to direct satellite delivered data, such as EMM streams, to the local headend. This output is active only if your system is designed to use this feature.
The SCT2X4 also provides an ASI input where additional locally generated programs can be input. This input is only usable if your system is designed to use this feature. The SCT2X4 may be remotely monitored and controlled via its RS232 interface.
6
Installation and Mounting / Front Panel Controls
INSTALLATION AND MOUNTING NOTES
This equipment is designed to be installed in a standard 19” rack. When the unit is mounted above or below other rack mounted equipment, a 1U space (1.75”) should be left between the unit and the other equipment to allow ambient air flow between the units. No space is needed between adjacent SCT2x4 units themselves due to the ventilation provided by their built in fans.
Connect the AC line cord to an appropriate source of 120 volt, 50/60 Hz AC power. The SCT2x4 is always on once the AC power cord is connected to its power source.
F1, LCD Display - This display presents the selected menu screen and the parameter settings. The backlight in the display is on when power is applied.
F2, Left and Right Buttons – Use the left and right arrow buttons to navigate from screen to screen to view a parameter setting within a particular program group. These buttons are operational in the view mode or the adjust mode. Using only these buttons will not change any parameter setting.
F3, Up and Down Buttons – Use the up and down arrow buttons to change the value of a viewed parameter setting. The unit must be in the adjust mode in order for these buttons to become active for changing a parameter setting. If the unit is not in the adjust mode and program group ‘INPUTS’ has been selected using the ‘SELECT Left and Right Buttons (F5), pressing the UP button will toggle between the ‘SAT 1 SAT 2’ screen and the ‘FW Version’ screen. Pressing the DOWN button will toggle between the ‘SAT 1 SAT 2’ screen and the ‘STAT2 STAT3’
screens. If QAM 1 through QAM 4 have been selected, pressing the UP button will display the rmware version
number, but pressing DOWN button will display the Buffer screen showing the percentage of current buffer usage on the left and maximum buffer usage on the right for that particular QAM output.
F4, ENTER Button - Use the ENTER button to enter the adjust mode or to save and load a new setting or
settings after adjustment. Hold for approximately 2 seconds until the bottom line of the display starts to ash to
enter the adjust mode. After entering the adjust mode, momentarily pressing the ENTER button again will load and save any settings that may have been changed using the Up and Down buttons.
F5, Left and Right SETUP SELECT Buttons - Use the left and right SETUP SELECT buttons to navigate through the 7 available programming groups. The selection of the desired parameters within each of these groups can then be made using the LEFT and RIGHT (F2), UP and DOWN (F3), and ENTER (F4) buttons These groups are as follows:
INPUTS - Allows observation and selection of several parameters for the SAT 1 and SAT 2 inputs.
QAM 1, QAM 2, QAM 3, & QAM 4 - Allows observation and selection of parameters for each of the four QAM
outputs.
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