THIS PRODUCT IS NO LONGER IN PRODUCTION
The 706 is Inovonics' second-generation FM Stereo Generator which includes the FMX "Coverage Extension" Transmission System as an easily-installed plug-in option.
The 706 Generator incorporates the necessary preemphasis and low-pass filtering functions required in customary broadcasting practice, and features patented compensation cicuitry to avoid modulation sacrifices due to overshoots in the primary low-pass filter.
FM subcarrier(s) and Pilot are digitally synthesized for optimum and adjustment-free operation.
±0.25dB, 25Hz-16kHz; -25 or better at 10Hz, -60 or better at 19kHz.
<60dB, 10kHz-16kHz (L/R, or R/L)
Main-to-Sub, -70dB or better;
Sub-to-Main, -65dB or better.
<0.05% THD in demodulated audio 1dB or more below 100% modulation; Mono or Stereo mode, 22Hz-16kHz
Better than 85dB below 100% modulation in demodulated audio, Mono or Stereo; “spectral” noise components in composite output better than 75dB below 100% modulation, 25Hz-1MHz.
50µs or 75µs, user-selectable; ±0.5dB over curve.
19kHz, ±1Hz; injection level adjustable between 6% and 12% relative to 100% modulation. Pilot distortion <0.5% THD.
“Main” Left and Right program inputs are active-balanced, bridging; accept line input levels between -10 and +15dBu. (OdBu=0.775V r.m.s.) Alternate, single-ended inputs bypass preemphasis and input conditioning circuits.
7-pole, phase-corrected, active-elliptic “FDNR” low-pass; third-order Chebyshev high pass.
Integral part of input filter overshoot control circuit; defeatable with same.
Single-ended; accept input levels between -5 and +10dBu for 10% modulation.
Two independent single-ended “zero impedance” outputs; adjustable between -5 and -12dBu (0.5 to 3 V r.m.s. or 1.2 to 8V p-p).
TTL-level symmetrical squarewave in phase with 19kHz Stereo Pilot.
Requires momentary contact closures to ground to switch FMX™ System ON or OFF, or to switch to MONO operation from Left or Right or L=R, or to return to STEREO mode. Generator defaults or “wakes up” to STEREO mode with FMX™ System ON.
608kHz (16X subcarrier oversampling).
105-130VAC or 210-255 VAC, 50/60Hz; 8 Watts.
3-1/2”H x 19”W x 10”D (2U); 10 lbs.