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Tv Modulators Mini Modular Headend Mmh3000 Channel Processing Equipment

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Channel processing equipment Mini modular headend MMH3000 TV modulators Modulating analogue video/audio signals into VSB RF channel with mono, stereo A2 sound or stereo NICAM 728 sound.  output level stabilization  carriers crystal stabilization  low level harmonics and intermodulation products  connectors: video/audio, input - 15 Sub-D socket mt310 VSB modulator, standard B/G/D/K/I/L mt310C VSB modulator, standard B/G/D/K/stereo A2 mt310N VSB modulator, standard B/G/D/K/stereo NICAM 728 Technical specifications T Y P E mt310 mt310C mt310N Ordering number TV standard 13819 13820 13869 pr. Frequency range B/G/D/K/I/L B/G/D/K/stereo A2 B/G/D/K/stereo NICAM 110-862 MHz Video input frequency range 20 Hz - 6 MHz level/impedance 1 V ± 3 dB/75 Ω Audio input frequency range 20 Hz - 15 kHz level/impedance 775 mV/10 kΩ RF output level/impedance 100 dBµV/75 Ω Sound subcarrier frequency 5.5 MHz, 6.0 MHz, 6.5 MHz stereo A2* stereo NICAM 728** ≥ 14 dB Return loss Output level adjustment range 0 ÷ -10 dB S/N ratio, weighted > 57 dB A/V ratio pr. 12/16 dB Audio level adjustment pr. + 6 ÷ -6 dB by 2 dB step IMD2/IMD3 spurious level Current consumption < -60 dB 5.5 V 0.63 A 5.5 V 0.67 A Operating temperature range 0o ÷ +50o C Dimensions/Weight (packed) 45x115x220.5 mm/0.38 kg * second sound subcarrier frequency 5.742 MHz B/G/stereo A2; 6.257 MHz D/K/stereo A2 ** second sound subcarrier frequency 5.85 MHz B/G, D/K/stereo NICAM 728 pr. software control 5.5 V 0.85 A