.gif "Headend modules")
.gif "TV modulatos for cable TV network MT-400")
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- Automatic gain control (AGC) in every channel.
- Signal receptions from different directions and polarizations feature.
- MMDS TV signal reception feature
- Max number of channels is 22 (without MMDS signals).
- Built-in variable attenuator in every input.
- Built-in signal level display in every channel.
- Injectors for the antenna amplifier supply in every input.
- Injectors for the MMDS converter supply (in MMDS amplifier module).
- Output level and flatness control.
- “F”-connectors.
- Low cost.
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- Vestigial sideband modulation
- Operation with A2 stereo audio signal (М03 and М04 modulators)
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The Central Processor Module is used to program and control headend tuning and diagnostics. The software can be updated at Planar website. Supplied complete with COM port cable (optional).
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- Used to viewing, setting, editing configurable parameters of “PLANAR-SG24” head-end modules.
- Control is made by 16 buttons
- Information is presented on LCD display.
- There is the sound effect of button pressing.
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K1 and K2 Channel Amplifiers are used to amplify RF signal of one TV channel.
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- Head-end modules are made as fix channel modules under customer’s demand such as programmable modules
- High selectivity of channel amplifiers and converters
- High linearity and noise-immunity of head-end inputs
- 30dB-depth automatic gain control (AGC)
- High reliability of the head-end is provided by modern electronic components
- High selective converters allow to adjacent channel working while input level differences between any one and the nearest adjacent channels at least 40 dB
- 2/3/4/8-input combiners are used to divide and sum input signals
- Combiners allow the manual tuning of the signal level
- Built-in output combiner –30 dB test port
- Head-end is designed for round-the-clock working
- “F”-type input/output connectors
- SG24 modulators match with the conditional access system for terrestrial analogue broadcasting of “Cripton” company
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- Easily modified modular design
- Up to 16 modules in a compact chasse (19", 3U)
- Modules type:
- K01 RF → RF Converter Module is a frequency converter of digital (DVB-T2, DVB-T, DVB-C) and analog broadcast television signals with the ability to work in the adjacent channels
- A/V → RF modulator M01 ... M04 module is vestigial sideband TV modulators (mono and stereo)
- SG32 Headend is compatible with M01 ... M04 modules from the composition of the MT-500 multi-channel modulator
- Automatic output level control of each channel
- Control via Ethernet (10/100 Mbit)
- Remote software update
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KS1 Converter is used to transform RF signal in reception channel to RF signal in distribution channel. The converter includes input-to-intermediate frequency converter, two SAW filters, intermediate-to-output frequency converter, amplifier, automatic gain control unit.
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