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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.
€281.06
| Price | Disc. | Quantity | Validity |
|---|---|---|---|
| €281.06 | 0 % | from 1 piece |
Available
MULTISWITCH MR908 9 in/8 out multiswitch with power supply and active/ passive terrestrial TV path dedicated for small and medium installations with distribution of RTV/SAT signals.
• 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)
• Passive terrestrial TV path (5-862 MHz)
• Built-in power supply
• 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)
• Passive terrestrial TV path (5-862 MHz)
• Built-in power supply
• Die-cast housing guarantying high screening efficiency (class A)
Details
Radial multiswitches of MR series are dedicated for small and medium (4-70 outlets) SMATV systems with distribution of the first SAT IF and terrestrial TV signals. The multiswitches have to work inside buildings. In the case of larger systems with multiple multiswitches, it is necessary to use splitters and taps of SD-9XX series to extend the signal lines.
The multiswitches of MR series are intended for systems wholly or partly based on star topology in which the cables to the terminal outlets go from one multiswitch or a group of multiswitches. This solution is optimal for single-family homes and many multifamily houses. In more complex systems the power supplies built into MR multiswitches can power other system components.
The MR-908L R70808 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. Additionally, the MR-908L R70808 multiswitch has been equipped with passive terrestrial path that should be applied in systems with return channel (the passive and active paths cannot be used simultaneously).
The active DVB-T terrestrial signal path has a built-in filter for LTE signals to eliminate unwanted signals in the 800MHz band (791-862 MHz frequencies) for data services (LTE).
The die-cast housing provides high screening efficiency by preventing the penetration of interfering signals to the unit.
The input SAT signals to multiswitch systems should be provided by QUATRO LNBs.
Key features:
- radial multiswitch
- built-in cable pre-correction
- grouping of outputs according to output level
- separation between inputs greater than 30 dB
- possibility to supply preamplifier for terrestrial antenna
- active terrestrial signal path equipped with LTE filter (47-790 MHz)
- passive TV signal path (5-862 MHz)
- built-in power supply
- cast casing guaranteeing a high level of shielding - class A
A device from the well known Terra company that specializes in producing professional multiswitches for SMATV systems. Excellent workmanship, stable parameters and very low failure rate make TERRA multiswitches universally recommended.
An unquestionable advantage of MR-9XX multiswitches is the differentiation of output levels for different outputs. This guarantees similar signal levels in outlets located at different distances from the device. Additionally, the designer has used here pre-correction of the attenuation characteristics of the coaxial cable - signals of higher frequencies have higher levels, thanks to which the attenuation of the cable is properly compensated.
The device is powered with 230 VAC power network. All obligatory precautions for working with dangerous live voltages should be obeyed.
Recommended Library titles:
Specifications
| Product type | Multiswitch | ||
| Number of LNBs | 2 × quatro | ||
| Series | MR-9xx | ||
| Model | MR-908L | ||
| Brand | TERRA | ||
| type | final | ||
| type | classic | ||
| Applications | Indoor | ||
| Type of cooperating converter | Quatro | Yes | |
| Type of cooperating converter | Wideband | No | |
| No. of inputs | 9 | ||
| No. of outputs | Legacy | 8 | |
| RF path | Active | Yes | |
| RF path | Preamplifier power supply | Yes | |
| voltage | V | DC 12 | |
| Current capacity | A | 0.1 | |
| passive | Yes | ||
| Device specifications | |||
| Input | RF band | MHz | 47-790 (active path), 5-862 (passive path) |
| Input | 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 (active path), 5-862 (passive path) |
| Output | SAT IF band | MHz | 950-2150 |
| RTV signal level at outputs 1-4 | dBµV | 85 | |
| RTV signal level at output 5-8 | dBµV | 85 | |
| 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 |
| SAT IF path gain – built-in pre-correction of cable attenuation characteristics | outputs 5-8 | dB | 8...12 |
| RF path amplification – built-in pre-correction of cable attenuation characteristics | outputs 1-4 | dB | -28 (passive path), 1...5 (active path) |
| RF path amplification – built-in pre-correction of cable attenuation characteristics | outputs 5-8 | dB | -28 (passive path), 0.5...4 (active path) |
| Input separation | SAT IF | dB | >30 |
| Output separation | FM TV | dB | >35 |
| Output separation | SAT IF | dB | >30 |
| Return loss | TV/SAT | dB | >30 |
| Return loss | SAT/RF | dB | >40 |
| Power on RF inputs | H/Lo, H/Hi | V | 18 |
| Power on RF inputs | V/Lo, V/Hi | V | 14 |
| FM TV | V | 12 | |
| Current on RF inputs | 18 V & +14 V & +12 V | A | <1 |
| Current on RF inputs | 14V@12 V | A | <0.5 |
| 12V | A | ≤0.1 | |
| Current drawn | from receiver | A | 0.06 |
| Control signals | 14/18 V, 0/22 kHz, tone burst, DiSEqC 1.0, DiSEqC 2.0 or related | ||
| Die-cast enclosure | Yes | ||
| Remotely powered | No | ||
| Built-in power supply | Yes | ||
| Screening efficiency class | A | ||
| Compliance with relevant national legislation | Yes | ||
| Power supply | V/Hz | AC 230/50-60 | |
| Power consumption | W | 4 | |
| Operating temperature | °C | -20...+50 | |
| Dimensions | mm | 253 × 135 × 52 | |
| Weight | kg | 1.44 | |
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.
