Quantization Steps

 

 

 

 

 

U (Voltage)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8

 

 

 

 

 

0111

Continuous

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Analog Signal

 

 

 

 

 

 

 

 

7

 

 

 

 

0110

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6

 

 

 

0101

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

 

 

0100

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

0011

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

0010

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0001

 

 

 

 

 

 

 

 

 

 

 

 

 

 

0000

 

 

 

 

 

 

 

 

-8

-7

-6

-5

-4

-3

-2

1111

1

2

3

4

5

6

7

t (Time)

8

 

 

 

 

 

 

1110

 

-1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1101

 

 

-2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Quantization Errors

 

 

 

 

 

1100

 

-3

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(Noise)

 

 

 

 

1011

 

 

-4

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1010

 

 

 

-5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1001

 

 

 

 

 

 

-6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1000

 

 

 

 

 

 

 

-7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

-8

 

 

 

 

 

 

 

 

 

 

Digital Words

 

 

 

 

 

 

 

Conversation Rate

Fig. 4.4: Transfer diagram for an ideal linear ADC (2’s complement representation)

Digital distortion is quite different, as illustrated by this simplified example. If we take the situation where a 4 bit word has the positive maximum value of 0111, and add to it the smallest possible value of 0001 (in other words, the smallest increase in amplitude possible), the addition of the two results in 1000 - the value of the “negative” maximum. The value is turned on its head, going instantly from positive max to negative max, resulting in the very noticeable onset of extreme signal distortion.

5. INSTALLATION

Your BEHRINGER FEEDBACK DESTROYER PRO was carefully packed in the factory and the packaging was designed to protect the unit from rough handling. Nevertheless, we recommend that you carefully examine the packaging and its contents for any signs of physical damage, which may have occurred in transit.

+If the unit is damaged, please do not return it to us, but notify your dealer and the shipping company immediately, otherwise claims for damage or replacement may not be granted. Shipping claims must be made by the consignee.

5.1 Rack mounting

The BEHRINGER FEEDBACK DESTROYER PRO fits into one standard 19" rack unit of space (1 3/4"). Please allow at least an additional 4" depth for the connectors on the back panel. Be sure that there is enough air space around the unit for cooling and please do not place the FEEDBACK DESTROYER PRO on high tem- perature devices such as power amplifiers etc. to avoid overheating.

5.2 Mains connection

The mains connection of the FEEDBACK DESTROYER PRO is made by using a mains cable and a standard IEC receptacle. It meets all of the international safety certification requirements.

+Please make sure that all units have a proper ground connection. For your own safety, do not remove the ground connection within the units or at the supply, or fail to make this connection at all.

Before you switch on the unit, check that it is configured to match your AC mains voltage requirements. If it

E

5. INSTALLATION

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Behringer DSP1100P user manual Installation, Rack mounting, Mains connection