The CM1 FM Cable Modulator is a high-quality audio modulator designed for use in private and franchised cable systems, and permits retransmission of audio broadcasts over cable.
The frequency is adjustable from 87.5 to 108 MHz from internal direct reading switches or from the front panel graphics display control system. Setting the frequency internally disables the menu system from changing the frequency ensuring no unauthorised frequency changes.
The front panel of the CM1 has an LCD display that indicates frequency and PLL locked status. The rear panel contains XLR balanced inputs with input level controls, BNC for multiplex output from the internal digital stereo generator, BNC for multiplex input to the exciter for loop through operation and external processor input. RF output is via an N-Type socket. The power supply section has a fused switchable IEC power connector and a universal input voltage range from 85-260 volts AC ensuring computability of any mains system WORLD-WIDE.
The transmitter is fully configurable and the limiter and stereo encoder can be switched in and out of circuit. Jumpers available on board for pre emphasis, clipping, processing mode (clarity/loud), stereo/mono, and limiter on/off. The 'Virtual VFO' dual loop PLL system allows perfect audio flatness to below 10 Hz. AFC bounce and modulator overshoot are a thing of the past. You now can pass that low bass without distortion and overshoots and obtain that extra low frequency stereo separation. As well as this, internal harmonic filtering keeps your RF signal clean and compliant to FCC/EU standards.
The CM1 is an attractive all in one broadcast solution for small scale cable headends. Because the exciter, amplifier, power supply, stereo encoder and limiter are all in one case the price is less than half that of other comparable systems.
