TERRA MV908L, MV912L, MV916L Multiswitch Instruction Manual
- June 8, 2024
- terra
Table of Contents
TERRA MV908L, MV912L, MV916L Multiswitch
PRODUCT DESCRIPTION
- This series of multi switches has 8 satellite TV IF inputs, one terrestrial TV input, and up to 16 subscriber outputs. They ensure independent access of every subscriber to any SAT IF or terrestrial input.
- Multiswitches are designed for use in large SAT and terrestrial TV distribution systems.
- Terrestrial TV input has LTE signal suppression filter.
- The housing of multi switches meets more stringent screening requirements according to EN50083-2, class A.
- The multi-switches are intended for indoor use only.
SAFETY INSTRUCTIONS
- Installation of the multi switches must be done according to IEC60728-11 and national safety standards.
- The multi switches are powered from the stabilized power supply +18V. This voltage is not dangerous to life.
- Any repairs must be done by skilled personnel.
- To avoid damaging of the multi-switch do not connect the supply voltage until all cables have been connected correctly.
- Avoid placing the multi-switch next to central heating components, near highly combustible materials and in areas of high humidity.
- If the multi-switch has been kept in cold conditions for a long time, keep it in a warm room no less than 2 hours before powering.
- The ventilation should not be impeded by covering the multi-switch with items, such as newspapers, tablecloths, and curtains.
- From top, front and bottom of the installed multi switch must be at least 5 cm free space.
WARNING! Before connecting cables to the multi-switch, be sure that the cables shield and multiswitch functional grounding clamp have common potential. Otherwise, the floating voltage can damage product.
MONTAGE VIEW
The multiswitch must be fixed with screws. The screws are not included in a
package
OPERATING
- SAT IF signals must be connected as shown on the label of multiswitch to ensure correct access to SAT TV signals. It is important to equalize average signal level from satellites. Use gain controls for each satellite line to achieve this goal.
- The purpose of the control near the terrestrial TV input is to adjust optimal level of terrestrial TV signal. Maximal level must not exceed the upper limit (see specifications), at the same time it must not be too low to avoid interference from SAT TV lines.
- The subscriber’s access to terrestrial TV line is permanent. Subscriber access to SAT TV lines is controlled by either analogue control signals or DiSEqC signals, which comes from the receiver through RF cable
Analog control signals:
- 14V/18V – polarization selection (vertical/horizontal)
- 0 kHz/22 kHz – band selection (low/high band)
- 22 kHz tone burst – satellite selection (satellite A/B)
DiSEqC control signals according to DiSEqC 2.0 protocol for specifications (see www.eutelsat.com).
- Without DiSEqC signal and tone burst only satellite A will be accessible.
- Multiswitch is powered from network central power supply through horizontal polarization lines (H,Lo; H,Hi). It also can be powered from external 18 V power supply connected to rear side connector “AUX 18V”. Such feeding is useful in small networks where amplifiers SA51, SA91L with central power supply is absent.
- To improve isolation from other SAT TV lines put 75 Ohm terminations with DC blocking on idle connectors if they are.
TECHNICAL CHARACTERISTICS
| Type | MV908L | MV912L | MV916L |
|---|---|---|---|
| Number of outputs | 8 | 12 | 16 |
| Frequency range | SAT IF | 950-2400 MHz | |
| Terr. TV | 47-790 MHz | **** |
Gain
(fixed slope pre-correction)
| SAT IF| outputs 1-4| 9 ¸ 14 dB
outputs 5-8| 8 ¸ 12 dB
outputs 9-10| –| 7 ¸ 10 dB
outputs 11-12| –| 6 ¸ 8 dB| 7 ¸ 10 dB
outputs 13-16| –| 6 ¸ 8 dB
Terr. TV| outputs 1-4| 4 ¸ 9 dB
outputs 5-8| 3.5 ¸ 8 dB
outputs 9-10| –| 3 ¸ 7 dB
outputs 11-12| –| 2.5 ¸ 6 dB| 3 ¸ 7 dB
outputs 13-16| –| 2.5 ¸ 6 dB
Gain adjustment| SAT IF| 12 dB by 4 dB step
Terr. TV| 15 dB by 1 dB step
Output level for SAT IF (IMD3=35 dB)| 93 dBµV
Output level for Terr. TV (IMD3=60 dB)| outputs 1-8| 88 dBµV
outputs 9-12| –| 86 dBµV
outputs 13-16| –| 86 dBµV
SAT inputs decoupling| > 30 dB
Outputs decoupling| > 30 dB
Current consumption from receiver| 60 mA max.
Current consumption from inputs H lines or from external power supply| 12 V ¸
18 V 160 mA max. at 18 V
DC pass through connector “Aux 18 V”| 18 V 1 A max.
Control signals| 14/18 V, 0/22 kHz, tone burst or DiSEqC 1.0, DiSEqC 2.0 or
compatible versions
Operating temperature range| -20o ¸ + 50o C
Dimensions / Weight (packed)| 187x135x52 mm / 1.26 kg
2 equal carriers; output level by DIN45004B – add 3 dB to mentioned above value
- 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.
- The device has integrated LTE filter.
- Equipment intended for indoor usage only.
- Functional grounding. Connect to the main potential equalization.
- This product is in accordance to following norms of EU: EMC norm EN50083-2, safety norm EN62368-1 and RoHS norm EN50581.
- This product is in accordance with Custom Union Technical Regulations: “Electromagnetic compatibility of technical equipment“ CU TR 020/2011,
- “On safety of low-voltage equipment“ CU TR 004/2011.
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