Instruction manual

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Section I

INTRODUCTION

MODEL 716 PRODUCT DESCRIPTION

General Inovonics introduced the first “DAVID” (as in David vs. Goliath) FM-

Stereo Processor/Generator in 1992. The original Model 715 was the

hallmark of simplicity, and was intended to answer the more basic of

FM radio broadcasting needs.

The “DAVID-II,” Model 716, includes a redesigned pulse-width-

modulation audio processing section. This improved processing

circuitry extends the applicability of the DAVID-II into broadcast

environments where perceived loudness and modulation density are

considered germane to the broadcaster’s success.

Features Features of the Inovonics DAVID-II include:

• Comprehensive stereo audio processing: slow, “gain-

riding” AGC — Wideband Compression and Peak

Limiting — Independent High Frequency Limiting.

• Exclusive “Bass Enhance” equalizer (defeatable).

• Extended-response low-pass filtering with proprietary

overshoot compensation.

• Digital synthesis of pilot and subcarrier for unexcelled

performance and freedom from drift and routine

adjustment.

• Internal combining for RDS or SCA subcarriers.

• Built-in, adjustable Composite Processor.

MODEL 716 TECHNICAL SPECIFICATIONS

Frequency Response (through

appropriate de-emphasis network):

±0.5dB, 20Hz–15kHz; –1dB or

less at 16kHz, –60dB or better at

19kHz.

Stereo Separation (LàR or RàL):

Processing OUT: >65dB,

20Hz–16kHz.

Processing IN: >60dB,

20Hz–16kHz.

Distortion (with full Compression,

1dB below 100% modulation):

<0.25% THD in demodulated

audio above 200Hz.

Noise:

Better than 80dB below 100%

modulation in demodulated audio,

20Hz–16kHz. 38kHz residual and

“digital” noise above 54kHz,

–70dB or better.