PRODUCT DESCRIPTION
Multichannel ampliers SA51, SA51D are parts of medium or large SMATV networks.
SA51 is designed as a launch amplier and usually is installed at the begining of network. Its main purposes are:
- to equilize the power of signals in different lines;
- to make amplitude pre-correction of signal for compensation its loss in network;
- to supply voltage to LNB converters and other network elements like interstage ampliers SA51D, MV series multiswitches,
terrestrial path ampliers and so on.
SA51D is designed as interstage amplier with remote powering. Generally it is installed inside cascaded type networks to
compensate signal loss in trunk lines. It could be used as a launch amplier if additional power supply is plugged to relative
connector.
Suitable for moderate and tropical climates.
The ampliers are intended for indoor use only.
SAFETY INSTRUCTIONS
Installation of the ampliers must be done according IEC60728-11 and national safety standards.
Amplifier SA51 is powered from mains 230 V~ (this voltage is dangerous to life) and SA51D - from line
12...20 V DC via input connector.
Any repairs must be done by a qualied personnel.
Amplier SA51 is double isolated from mains 230 V~.
To avoid the electric shock follow these instructions:
Do not remove the cover of the power supply section, without disconnecting the amplier from the mains supply.
Do not plug the amplier into the mains supply if the power cord or plug is damaged.
Do not plug the amplier SA51 into the mains supply until all cables have been connected correctly.
To disconnect the amplier SA51 completely - disconnect plug from the mains socket.
The mains socket must be easily accessible.
To disconnect the amplier SA51D completely from supply voltage, disconnect the cable from input connector.
The ampliers shall not be exposed to dripping or splashing water and no objects lled with liquids, such as vases, shall be
placed on it.
Avoid placing amplier next to central heating components, near highly combustible materials and in areas of high humidity.
No naked ame sources, such as lighted candles, should be placed on ampliers.
If the amplier has been kept in cold conditions for a long time, keep it in a warm room no less than 2 hours before plugging
into the mains.
Do not insert any objects into ventilation openings.
The ventilation should not be impeded by covering the ventilation openings with items, such as newspapers, table-cloths, curtains.
Mount the amplier on not ammable wall or in not ammable installation box in vertical position with power supply unit on
the right side.
From top, front and bottom of installed amplier must be at least 10 cm free space.
MONTAGE VIEW
Mount the amplier in vertical position with power supply unit on the right side.
MULTICHANNEL AMPLIFIERS SA51, SA51D
up position
down position
Draugystes str. 22, LT-51256 Kaunas, Lithuania, tel.: +370 37 - 31 34 44, fax: +370 37 - 31 35 55
E-mail: sales@terraelectronics.com, http://www.terraelectronics.com
Vers. 1.01
TECHNICAL CHARACTERISTICS
APPLICATION DIAGRAM
Figure 1. Floor by oor installation powered from SA51.
Type SA51 SA51D
Frequency range SAT IF 950-2400 MHz
Terr. TV 47-862 MHz
Gain SAT IF, adjustable 22 dB (0 ÷ -15 dB) by 1 dB step
Terr. TV, adjustable 22 dB (0 ÷ -15 dB) by 1 dB step
Slope SAT IF, switchable 0/3/5/7 dB
Terr. TV, switchable 0/6/12/18 dB
Isolation SAT/SAT 30 dB
SAT/Terr. TV 30 dB
Noise figure, typical ≤ 9 dB
Output level IMD3=60 dB(DIN45004B) Terr. TV**** 109 dBµV
Output level IMD3=35 dB (EN50083-3) SAT IF**** 114 dBµ V
External equipment through V lines 14 V 0.5 A max. (switchable) -
powering through H lines 18 V 2 A* max. (switchable) -
through Terr line 12 V 0.1 A max. (switchable) -
DC pass through, switchable through H lines 2 A* max.
Supply voltage limit values, power consumption 198-250 V~ 50/60 Hz 5 W** DC 9-18 V 4 W***
Operating temperature range -20o ÷ + 50o C
Dimensions/Weight (packed) 284x135x52 mm/1 kg 178x135x32 mm/0.6 kg
* 1 A max. through one line
** without external DC loading; with maximal external DC load - 57 W
*** in line powering of SA51D through H lines
**** measured using 2 equal signals
OPERATING
A multichannel amplier consists of highly isolated individual ampliers for every incoming line. Gain and slope controls of
each amplier are located between input and output connectors of corresponding line.
Gain regulation is performed by two step attenuators. The rst rough control attenuator has 4 possitions with 4 dB steps
and the second ne control attenuator has 4 possitions with 1 dB steps. The gain of amplier is dened by subtracting joint
attenuation of both attenuators from maximum gain.
Slope control has 4 positions. The value of each position determines the difference of gain at highest and lowest frequencies.
Amplier SA51 provides voltages 18 V to all horizontal polarization connectors, 14 V to all vertical polarization connectors
and 12 V to Terrestrial TV input connector. The switches on the output side allows disconnect voltages of 18 V and 14 V from
output connectors. This is usefull in large networks for prevention of interference between power supply units, when several of
them are incorporated. The switch on the input side allows disconnecting of voltage 12 V from from terrestrial TV input line to
avoid short-circuiting of power supply if terrestrial amlier with remote powering is not installed. All voltage sources have short
circuit protection with LED indicators. Green light on them indicates normal operation. The red light signals that short-circuit
emerged in corresponding line or power supply is overloaded (in the case of overloading 18 V red light will be intermittent).
After that amplier SA51 must unplugged from mains and network must be repaired. Do not plug amplier to mains again until
30 sec. time will pass.
Amplier SA51D is powered from central network power supply (for example SA51) through horizontal polarization lines.
Both lines regarding DC are interconnected to minimize voltage loss in lines. It consumes up to 0.2 A from 18 V power supply.
Amplier has connector for auxilary power supply if voltage from central power supply is not accessible. If it is plugged voltage is
distributed to horizontal polarization lines in the same way as SA51. In every case presence of voltage in lines will be indicated
by green LEDs near the corresponding switch. Voltage 12 V in the input connector of Terrestrial path will be only if 18 V is
present in horizontal polarization lines.
Both ampliers SA51 and SA51D has DC through path in every Satellite TV line. It provides exibility for installation of power
supply units inside the network.
Caution.
Risk of electric shock.
This product complies with the relevant clauses of the European Directive 2002/96/EC. The unit must be recycled
or discarded according to applicable local and national regulations.
Equipment intended for indoor usage only.
Apparatus is double insulated from the mains.
Functional grounding. Connect to the main potential equalization.
TERRA conrms, that this product is in accordance to following norms of EU EMC norm
EN50083-2, safety norm EN60065, RoHS norm EN50581.
TERRA confirms, that this product is in accordance to following norms of Russian Federation: EMC
ГОСТ Р 51318.22-2006, ГОСТ Р 51318.24-99, ГОСТ Р 51317.3.2-2006, ГОСТ Р 51317.3.3-2008 and safety norm
ГОСТ IEC 60950-1-2011.
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