• Double sideband TV modulation, mono sound
• Outout TV channel freely set in UHF range (channels.21 to ch.69)
• Standard TV - PAL or SECAM L
• Up sounder - 6,5 MHz lub 5,5 MHz
• Sound and vision stabilizer (PLL)
• A/V regulation
• Input summing with other TV signals
• Possibility of placing many modulators in a serie
• Local or remote power supply
• Power supply for TV camera or antenna preamplifier
• Microprocesor driver
• Micro dimensions

Usage

• Individual (apartment, house)
• Collective (a block of flats, hotels, pensions, etc..)
• Cable TV network (final part). For this purpose, the signals A / V sources must be listed on the wymodulowane carrier frequencies selected (free) TV channels and then summing the signals from the antenna installation RTV at a point which will be jointly distributed to a particular group TV receivers.
  Construction

  
  modulator MAW-810 is designed for all those uses thanks to the extensive fitting of improving the quality of systems and ensuring economic and easy installation and use.
  These include:

  • Test pattern generator - helps to identify the signal, for example, when programming the TV
  • Entry "looping" - "INPUT (ANT) - for the signals to be summed with the signal modulator.
  • LED state modulator:
    - shining continuously - Normal,
    - fast flashing - set the correct TV channel number,
    - free flashing - the image signal is a test.
  • Controllers - Video signal and audio signal - to adjust the modulator to the levels of signals brought the A / V
  • Carrier frequency stabilization circuits (PLL), both video and audio. With the modulator is not odstraja and does not cause distortion of receipt.
  • Two standard modulation in PAL or SECAM (switch).
  • Selection system audio subcarrier frequencies - 6.5 MHz or 5.5 MHz.
  • System enables remote power modulator through a coaxial cable connected to the output "OUTPUT (TV) and crossover-type mains ZZ-3.
  • = 12V socket for powering external devices with the modulator, such as camera, antenna preamplifier (required crossover-type power supply ZZ-3) or another modulator MAW-810, voltage is available at both local and remote power modulator.
  • Microprocessor controller to control the modulator.
  • 10 - piece, miniature switch for easy and reliable channel selection and the number of ON / OFF test signal. Entry "looping" with the remote power system allows for serial compilation of several modulators and their power supply from one source (either locally or remotely).
    

    Selecting and setting the TV channel number
    modulator used in the MAW-810 dwuwstęgowa modulation requires that the antenna installation are not used in relation to adjacent TV channels in the selected channel modulator, eg if the antenna installation k.37 channel is used it should not be set on the channel modulator or k.38 k.36, while the channel may or k.39 k.35.
    

    Power Modulator
    modulator MAW-810 requires a constant voltage of +12 V with a tolerance of + / -0.6 V, for example, the AC plug in ~ 230 V / = 12 V stabilization voltage and maximum current consumption of 100 mA.
    power can be released locally - through socket 'Power supply 12 V / 100 mA.
    It is also possible to remotely power through co-axial cable connected to the output modulator (OUTPUT (TV)). Introduction to the power supply cable must be made using the crossover (type SO-3).
    Cord from the power supply should be completed mini jack connector (mono), with pole "+" at the tip of the plug. Plug should stick to a wall at the bottom of the modulator (local power) or to the corresponding socket on the wall switch (remote power).
    In the case of power through the modulator devices cooperating (with the socket "Camera 12V supply), power supply should be appropriately adapted to increased power consumption.
    

    Technical characteristics
    
    

    Parameter	Value
    Output level	470 - 862MHz (k.21 - 69)
    Frequency stability of vision	± 75 kHz max.
    Frequency stability of soundi	± 5 kHz max.
    Exit level of TV (w.cz.)	75 ÷ 80 dBmV
    The differance of levels in channels 21 - 69	max. 3 dB
    Modulation tye	amplitude, Dual SideBand; mono sound
    Standard TV (switch)	- PAL or SECAM* - K, G (negative modulation, sound modulation FM) - SECAM L (positivve modulation, sound modulation AM)
    Audio subcarrier frequency differential	6,5 MHZ lub 5,5 MHz (switch)
    The level of audio subcarrier against supporting the vision	- 12 pl/min 2 dB
    Audio Frequency Deviation	pl/min 50kHz max.
    Sound Preemphasis	50 ms
    Vision modulation deepness	80 % pl/min 5 % nominal
    Required level of input video signal	0,5 ÷ 1 Vpp (regulacja)
    Required video signal polarization on the input	positive
    Required levels of the audio signal input (deviation pl/min 50 kHz)	0,5 ÷ 2,0 Vpp (regulationable)
    Audio Frequencyband	30 - 15000 Hz
    Nonlinear Audio Distortion	1,5 % max.
    Attenuation of mismatched in INPUT outlets (ANT) i OUTPUT (TV)	min. 18 dB (dla) 75 W
    Impedance INPUT (ANT) i OUTPUT (TV)	75W
    Attenuation between signals INPUT (ANT) a OUTPUT (TV)	2 dB max.
    Power supply	+ 12 V / 100 mA local ( "Power supply") or remote ( "OUTPUT" TV)
    Power supply of other devices (camera, preamplifier, another modulator)	12 V, from socket "Camera supply 12 V"
    Typy gniazd - INPUT (ANT)i OUTPUT (TV) - "VIDEO in" i "AUDIO in" - "Power Supply 12 V / 100 mA" i "Camera Supply 12 V"	IEC 75 W CINCH MICRO JACK ("mono")
    Working temperature range	0 ÷ +50°C
    Dimensions	72 x 62 x 30 mm