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Professional Headend Solutions VMB 191 Agile A/V Modulator A/V Þ analog TV
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The VMB 191 is a premium A/V Modulator of the B-LINE headend series. It allows processing of any Audio/Video signal from satellite receivers, TV demodulators, TV cameras, videotape recorders or any other A/V sources into an analog-TV program (45...862 MHz). This module is idially suited for cable operators, private networks, community networks, hotels, resorts etc. for transmitting A/V signals in analog-TV (PAL, SECAM, NTSC) to their network where it is relevant to have excellent RF output performance. The VMB 191 can be easily operated & managed manually and remotely via the unique central control unit (HCB 100).
Modulation of any A/V source into an analog TV
(45...862 MHz)
Modular design allows installation into 19” cabinets High professional technology provides flexible program selection and exceptional RF performance Easy local and remote operation via central control unit HCB 100 / SNMP capable Additional TV-IF Output and IF-loop optionally available
VMB 191
Audio/Video
Analog TV 45...862 MHz
Technical Specifications VMB 191 Video-Input Input voltage with AGC Input voltage without AGC Impedance Connectors Input filter (disconnectable) Clamping (switchable) AGC Audio-Input Input level Input resistance (switchable) Connector Configuration (switchable) TV-Output TV standard Sound procedure Sound carrier frequencies
A/V Modulator VMB 191
Sound operation modes
gile
Sound deviation 1 mono-carrier Sound deviation 2 mono-carrier Sound deviation dual tone Output frequency range Tuning grid Output level Level adjustment range Channel allocation Connector Impedance Return loss
managed by
SNMP
Operating parameter Voltage/current
0.8…1.3 Vpp 1 Vpp 75 W BNC socket 5 MHz lowpass soft/hard disconnectable - 8...+ 7 dBV 0.6/12 kW 8-poles according to DIN 45326 (IEC 130-9-20) balanced/unbalanced B/G (M,D/K,L, I upon request) FM-dual carrier processing 5.5/5.742 MHz (above picture carrier) mono/stereo/dual/ auto/external 30/50 kHz 30 kHz 30 kHz 45…862 MHz 10 kHz max. 116 dBìV 0...31.5 dB (0.5 dB steps) adjacent channel ability F socket 75 ? ³ 18 dB 45 MHz - 1.5 dB/Octave 12 V (± 0.2 V)/470 mA
