The noise generator card is designed to provide pink or white noise for use in masking or alignment of audio systems.

Typical applications are public address systems, sound reinforcement systems, and sound masking systems. The actual application of the noise generator card is found in such buildings as airports, factories, courthouses, casinos, convention centers, hotels, racetracks, training systems, corporate boardrooms, and office buildings.

The model 586 consists of two separate circuits. The first section is a digital noise generator. The output of the noise generator circuit is standard white noise.

The white noise is fed to a push-on jumper area of the card, and to a filter, the output of which is standard pink noise. The pink noise is also fed to the push-on jumper area. By placing the push-on jumper on the desired pins, the user may select either white or pink noise. The card is shipped from the factory strapped for pink noise. To select white noise, simply move the red push-on jumper to the other set of pins. The jumpers are located in the middle of the PC board assembly, next to the output section.

The second circuit consists of a balanced line output, with adjustable gain. The gain is adjusted via the trimpot mounted on the front of the PC board assembly. The maximum output level for the pink noise is -5dB into 600 ohms. The maximum output of the white noise is +15dB into 600 ohms. The output section of the card is transformer isolated, and should be terminated into a 600-15K ohm load.

The Model 586 may be mixed or matched with other INTEGRA III SYSTEM components, within the same card frame, without degradation in performance. For larger installations, the output of the Model 586 may be fed into the audio distribution amplifier cards, to serve more areas.