Descriptions of the satellite LNB outputs and the multiswitch inputs depend on their manufacturers. To avoid confusion, our movie illustrates the differences and clarifies the issue.
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Multiswitch designed for cooperation with two Quatro LNBs and terrestrial TV antenna, for applications in medium and large 9-cable SMATV systems, also in multi-staircase buildings (with division into subnetworks).
• 9/8 multiswitch for systems with radial topology
• Built-in cable loss correction
• Groups of outputs with different output levels
• Isolation between inputs better than 30 dB
• Powering of optional terrestrial TV preamplifier
• Active terrestrial TV path with LTE filter (47-790 MHz)
• Die-cast housing guarantying high screening efficiency (class A)
• Built-in cable loss correction
• Groups of outputs with different output levels
• Isolation between inputs better than 30 dB
• Powering of optional terrestrial TV preamplifier
• Active terrestrial TV path with LTE filter (47-790 MHz)
• Die-cast housing guarantying high screening efficiency (class A)
Details
Terra multiswitches of MV series have been designed for medium and large 9-cable SMATV systems, also in multi-staircase buildings (with division into subnetworks).
The MV-908L R70858 multiswitch has built-in amplifiers for terrestrial and satellite TV. The adjustment of the SAT IF and DVB-T (47-790 MHz) gain is made with dedicated switches. In comparison with potentiometers, this solution increases stability of the adjustments.
The DVB-T path has LTE filter for eliminating unwanted signals in 800 MHz band (791-862 MHz) coming from LTE services.
The die-cast housing provides high screening efficiency by preventing the penetration of interfering signals to the unit. High output levels and built-in compensation of the increased loss of signals at higher frequencies in the distribution cables allow for building large SMATV systems with subscriber lines up to 80 meters.
Distinguishing features
- 9/8 multiswitch for systems with radial topology
- Built-in cable loss correction
- Groups of outputs with different output levels
- Isolation between inputs better than 30 dB
- Powering of optional terrestrial TV preamplifier
- Active terrestrial TV path with LTE filter (47-790 MHz)
- Die-cast housing guarantying high screening efficiency (class A)
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Specifications
Product type | Multiswitch | ||
Number of LNBs | 2 × quatro | ||
Series | MV-9xx | ||
Model | MV-908L | ||
Brand | TERRA | ||
type | final | ||
classic | |||
Applications | Indoor | ||
Type of cooperating converter | Quatro | Yes | |
Wideband | No | ||
No. of inputs | 9 | ||
No. of outputs | Legacy | 8 | |
RF path | Active | Yes | |
Preamplifier power supply | No | ||
Device specifications | |||
Input | RF band | MHz | 47-790 |
SAT IF band | MHz | 950-2150 | |
Gain control in RF path | dB | 0...-15 with step 1 | |
gain control in SAT IF path | dB | 0...-12 with step 4 | |
Output | RF band | MHz | 47-790 |
SAT IF band | MHz | 950-2150 | |
poziom sygnału RTV na wyj. 1-4 | dBµV | 88 | |
poziom sygnału RTV na wyj. 5-8 | dBµV | 88 | |
SAT IF signal level on outputs 1-8 | dBµV | 93 | |
SAT IF path gain – built-in pre-correction of cable attenuation characteristics | outputs 1-4 | dB | 9...14 |
outputs 5-8 | dB | 8...12 | |
RF path amplification – built-in pre-correction of cable attenuation characteristics | outputs 1-4 | dB | 4...9 |
outputs 5-8 | dB | 3.5...8 | |
Output separation | FM TV | dB | >35 |
SAT IF | dB | >30 | |
Return loss | TV/SAT | dB | >30 |
SAT/RF | dB | >40 | |
Power on RF inputs | H/Lo, H/Hi | V | 18 |
V/Lo, V/Hi | V | 14 | |
Current drawn | from receiver | A | 0.06 |
from H line or external power supply 18 VDC | A | <0.16 | |
Control signals | 14/18 V, 0/22 kHz, tone burst, DiSEqC 1.0, DiSEqC 2.0 or related | ||
Die-cast enclosure | Yes | ||
Remotely powered | Yes | ||
Built-in power supply | No | ||
Screening efficiency class | A | ||
Compliance with relevant national legislation | Yes | ||
Power supply | V/Hz | DC 18 | |
Operating temperature | °C | -20...+50 | |
Dimensions | mm | 187 × 135 × 52 | |
Weight | kg | 1.26 |
Videos
Designing antenna systems with the use of free software from TERRA - SatNet application. The program allows to prepare the project in graphical form, to determine signal levels in all outlets and verify if they are compliant with standards, and to decide whether to use equalization function of the amplifiers. The program enables the user to archive the designs.