Scientific Atlanta 4647 IF/Baseband Analyzer

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The Scientific Atlanta 4647 IF/Baseband Analyzer product has been replaced by a new product.

The Scientific-Atlanta 4647 IF Noise Test Set is designed to be inserted in the 70 MHz IF section of a digital or FM radio, where it will add calibrated levels of white noise. By this means, it facilitates measurement of noise dependent parameters such as FM S/N and bit error rate. A built-in power meter and microprocessor control enable constant carrier-to-noise ratios to be maintained at the 4647 output, regardless of variations in input carrier power caused by fades, path reflections, etc. An additional internal fast AGC amplifier allows for rapid fades (up to 100 dB/sec) over a nominal 12 dB range of input levels and may be employed or bypassed as required.

The Scientific-Atlanta 4647 also contains a calibrated 0 dBm 70 MHz crystal reference oscillator for use in AGC curve measurements and as a general purpose reference source.