June 2011

June 20, 2011

SDI LEVEL CONVERSION TABLE

The SDI (Serial Digital Interface) signals used in the Broadcasting Industry and the CCTV Industry have a set of standards that dictate the levels, frequency bandwidth data rate and many other requirements for good data delivery.

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June 10, 2011

WHY ARE MY PICTURES FUZZY ON LONG CABLE RUNS?

The culprit is the cable connecting the Camera to the Recorder. It is just that simple, but an actual description of the process that introduces this loss is a little more complex. This loss of picture detail or picture fuzziness is actually caused by four

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fuzzy camera fuzzy pictures gb-60

June 4, 2011

AUDIO DE-EMPHASIS RESPONSE TABLE

In the transmission of FM modulation there is more noise at the higher audio frequencies than there is at the lower audio frequencies. To compensate for this unbalance and make the noise more uniform over the audio spectrum, the Broadcasting industry developed some standards for

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audio de-emphasis audio pre-emphasis audio volume meter avm emphasis

June 4, 2011

HOW TO GROW YOUR BUISINESS IN A DOWN ECONOMY

When I ask them what they are doing to boost their sales, some say they are just doing a lot more of the usual sales activities, but complain that it is not delivering the level of sales they need. Others I have spoken to have

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grow your business

June 4, 2011

BESSEL NULL FM DEVIATION MEASUREMENT

The BESSEL NULL FM deviation measurement is an extremely accurate way to obtain a precise deviation setting on any FM modulator operating at any RF frequency. This test requires a Spectrum Analyzer, Sine-Wave Generator, Audio Frequency Counter, and an accurate dBm meter to verify audio

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bessul null fm deviation measurement fm radio

June 3, 2011

FDNR Filter Design

This design process enables designers to build Low Pass Filters that exhibit much higher accuracy than can be done with 10% inductors and 5% capacitors, using only 1% resistors as the required active components. At the same time, inductors created by the FDNR have very

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fdnr fdnr filter

June 1, 2011

Checking Laptops for Real-Time Audio and Video Capability

A recording engineer friend recommended a free utility called “DPC Latency Checker” that you can download from www.thesycon.de/deu/latency_check.shtml. It shows delays due to improper device driver handling of Deferred Procedure Calls on Windows machines, to check if your computer is suitable for real-time audio or

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checking laptops real-time audio

June 2011

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