Digital audio adda 2402 User Manual Download Page 2

IMPORTANT SAFETY AND INSTALLATION INSTRUCTION

SAVE THESE INSTRUCTIONS

INSTRUCTIONS PERTAINING TO RISK OF FIRE, ELECTRIC SHOCK, OR INJURY TO PERSONS

WARNING – when using electric products, basic precautions should be followed, including the following:

1. Read all of the safety and installations instructions and explanation of graphic symbols before using the product.

2. The product must be grounded. If it should malfunction or breakdown, grounding provides a path of least resistance or
electric current to reduce the risk of electric chock. This product is equipped with a power supply cord having an equipment-
grounding conductor and a grounding plug. The plug must be plugged into an appropriate outlet which is properly installed
and grounded in accordance with all local codes and ordinances.

DANGER – Improper connection of the equipment-grounding can result in a risk of electric shock. Do not modify the plug
provided with the product – if it will not fit the outlet have a proper outlet installed by a qualified electrician. Do not use an
adapter which defeats the function of the equipment-grounding conductor. If you are in doubt as to whether the product is
properly grounded, check with a qualified serviceman or electrician.

3. Do not use this product near water – for example, near a bathtub, washbowl, kitchen sink, in a wet basement, or near a
swimming pool, or the like.

4. This product should only be used with a stand or cart that is recommended by the manufacture.

5. This product, either alone or in combination with an amplifier and speakers or headphones, may be capable of producing
sound levels that could cause permanent hearing loss. Do not operate at a high volume level or at a level that is uncomfortable.
If you experience any hearing loss or ringing in the ears, you should consult an audiologist.

6. The product should be located so that its location or position does not interfere with its proper ventilation.

7. The product should be located away from heat sources such as radiators, heat registers, or other products that produce heat.

8. The product should be connected to a power supply only of the type described in the operating instructions or as marked on
the product.

9. The power-supply cord of the product should be unplugged from the outlet when left unused for a long period of time.
When unplugging the power supply, do not pull on the cord, but grasp it by the plug.

10. Care should be taken so that objects do not fall and liquids are not spilled into the enclosure through openings.

11. The product should be serviced by qualified service personnel when:

A. The power supply cord or plug has been damaged, or
B. Objects have fallen, or liquid has spilled into the product, or
C. The product has been exposed to rain, or
D. The product does not appear to be operating normally or exhibits a marked change in preformance, or
E. The product has been dropped, or the enclosure damaged.

12. Do not attempt to service the product beyond that described in the user maintenance instructions. All other servicing
should be referred to qualified service personnel.

13. WARNING - Do not place objects on the power supply cord, or place the product in a position where anyone could trip over,
walk on, or roll anything over cords of any type. Do not allow the product to rest on or be installed over cords of any type.
Improper installations of this type create the possibility of a fire hazard and/or personal injury.

ATTENTION

:  RISQUE DE CHOCK ELECTRIQUE NE PAS OUVRIR

CAUTION

RISK OF ELECTRIC SHOCK

DO NOT OPEN

CAUTION:

  TO REDUCE THE RISK OF ELECTRIC SHOCK

DO NOT REMOVE COVER (OR BACK).

NO USER-SERVICEABLE PARTS INSIDE.

REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

The lightning flash with arrowhead symbol, 
within an equilateral triangle,  is intended to 
alert the user to the presence of uninsulated 
"dangerous voltage" within the product's 
enclosure that may be of sufficient magnitude 
to constitute a risk of electric shock to persons.

The exclamation point within an equilateral 
triangle is intended to alert the user to the 
presence of important operating and 
maintenance (servicing) instructions in the 
literature accompanying the product.

Summary of Contents for adda 2402

Page 1: ...ADDA 2402 User manual...

Page 2: ...sources such as radiators heat registers or other products that produce heat 8 The product should be connected to a power supply only of the type described in the operating instructions or as marked...

Page 3: ...e without notice Digital Audio Denmark a s shall not be liable for technical or editorial errors contained herein nor for incidental or consequential damages resulting from the furnishing performance...

Page 4: ...ync input 10 USE THE ADDA 2402 AS A SMALL ANALOG DIGITAL CROSS FIELD 10 3 OPERATION 11 FRONT PANEL CONTROLS 11 Analog Input 11 Digital Input 11 Digital Output Source 11 Sample Rate 12 Dither 12 Sync 1...

Page 5: ...6...

Page 6: ...ias components in the digital signal eliminates the risk of generation of Alias Intermodulation Distortion AID 4 The D A converter converts a digital audio signal to a high quality analog signal havin...

Page 7: ...8...

Page 8: ...correctly shielded cable of good quality for all external connections when installing the ADDA 2402 For the power connection a normal un shielded cable can be used Make sure that the XLR Phono and Ja...

Page 9: ...ll of them to the digital output on your DAT recorder your CD player or and your harddisk recording system and use the front panel to switch between the input sources You will also find a Digital Outp...

Page 10: ...nt panel control the mode of operation of the ADDA 2402 All settings are shown by light diode indicators LEDs Each time a button is activated the corresponding mode will change between the possible se...

Page 11: ...to Int Sync If the signal is re established the ADDA 2402 will automatically switch to the selected source unless the synchronisation mode has been changed It is possible to detect the sample rate of...

Page 12: ...m the noise floor will thus be below 104 dBrel A to the nominal level of 6dBu 0dBrel 24 bit ADC XLR Amp in in Amp in Jack 18dBFs Fast Peak data clock Input level L R 4dBFs Analog Input Source XLR inpu...

Page 13: ...14...

Page 14: ...onse has a Stop band attenuation of 117 dB at half the sampling fre quency thus eliminating high frequency aliasing Dynamic range The Dynamic Range is better than 117 dB A weighted at 44 1 kHz samplin...

Page 15: ...50 20 40 30 20 10 0 10 dBu Residual noise The residual noise floor is better than 140 dB Digital Audio Denmark A D Residual Noise 160 0 150 140 130 120 110 100 90 80 70 60 50 40 30 20 10 d B F S 20 20...

Page 16: ...n 140 dB measured as a FFT Digital Audio Denmark level 60 dBFS 150 0 140 130 120 110 100 90 80 70 60 50 40 30 20 10 d B u 0 20k 2k 4k 6k 8k 10k 12k 14k 16k 18k Hz D A Dynamic range 17 Processing delay...

Page 17: ...z sampling 120 40 115 110 105 100 95 90 85 80 75 70 65 60 55 50 45 d B r A 50 0 45 40 35 30 25 20 15 10 5 dBFS Linearity Linearity better than 0 5 dB down to 105 dB The output level is relative to 18...

Page 18: ...o Digital Audio Conversion 19 Dynamic range When measured A weighted the dynamic range is bet ter than 112 dB Linearity Linearity better than 0 5 dB down to 110 dB Insertion gain At sample rates from...

Page 19: ...20...

Page 20: ...20 k Ohm Max Input Level Balanced 18 dBu Max Input Level Un balanced 4 dBu ANALOG OUTPUTS Connectors XLR pin 2 hot pin 3 cold pin 1 ground Jack Impedance Balanced 40 Ohm Impedance Un balanced 20 Ohm...

Page 21: ...22...

Page 22: ...se of this as a convenient reference signal EN50082 EN 50082 1 Electromagnetic compatibility generic immunity standard part 2 Residential commercial and light industry Published by CENELEC 1992 Note t...

Page 23: ...s now that when new a tonal frequencies are added to the signal due to aliasing distortion such signals will mix very badly with the rest of the program and thus be audiable The important fact of this...

Page 24: ...existing frequencies fim f1 f2 If two frequencies are denominated f1 and f2 where f2 f1 and assuming f2 2f1 the modulation frequencies generated are as shown in Table 1 IM distortion will appear up to...

Page 25: ...d loudspeakers have lower distortion but most hi fi speakers will have IM distortion thus giving audible AID The only way to eliminate the problem with AID is to apply stop band filtering on the A D c...

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