background image

Operating the system 

Please push the 

power

 button on the front panel. The DAC is operational 

after about five seconds. In order to switch off, please push again the 

power

 button. 

Please turn the 

input

 switch (left knob) on the front panel to choose the 

wanted input. The numbers one to six belong to the input number on the 
rear panel. 

The DAC uses a smooth input selection. In case of switching over the 
input, first the outputs are turned off (muting), then the new input is 
switched on and finally the outputs are activated. 

Please turn the 

filter

 switch (right knob) on the front panel to choose the 

wanted filter. The numbers one to six belong to the six different filters. 
For details please refer to the next chapter.  

The DAC uses a smooth filter selection. In case of switching over the 
filter, first the outputs are turned off (muting), then the new filter 
program is loaded and finally the outputs are activated. 

Please push the 

phase invert

 button on the front panel to invert the phase 

of the output signal. This may be necessary for some compact discs. The 
activated phase inversion is indicated by the green LED next to the 
button. 

The LEDs (Light emitting diodes) in the middle of the front panel show 
the sampling frequency of the chosen signal-source and, if necessary, the 
activated de-emphasis. The DAC automatically detects the sampling 
frequency and necessary de-emphasis. 

.

.

32

44.1

48

sampling frequency  in kHz

input

filter

input selector

filter selector

front panel

  DAC

power

phase invert

.

.

.

emphasis

 

Switching on and 
off 

Input selection 

Choosing a filter 

phase inversion 

Sampling fre-
quency / Emphasis 

Содержание DAC

Страница 1: ...Audionet User s manual Digital to Analogue Converter DAC ...

Страница 2: ...ferent oversampling filters Central elements of the DAC are the digital signal processing system DSP the temperature regulation circuit decoupling the converter from the clock of the signal source a 20 bit D A converter as well as the completely discrete built up analogue section Before the first use please read this manual carefully So you will get optimized results from your DAC Nevertheless in ...

Страница 3: ... output the converted digital data will be offered to the outputs as analogue data CD Player Pre Amp DAC L R analogue digital The DAC offers inputs for up to six digital signal sources CD Player DAT 2 RCA gold plated 2 BNC 1 XLR AES EBU symmetric 1 TOSLINK or optional 1 AT T Please connect at least one digital input with the digital output of your signal source The DAC offers Coaxial RCA outputs f...

Страница 4: ...wires left and right channel The monitor input detects by itself if a signal is coming in and switches it into the processing circuit The DAC can be switched on and off automatically if connected to other Audionet components by an optical fibre cable to the Audionet link digital monitor digital input preamp CD DAT DSR DAT in Netzanschluß right left analog output MAINS Sicherung 1 A T in out link 6...

Страница 5: ...he next chapter The DAC uses a smooth filter selection In case of switching over the filter first the outputs are turned off muting then the new filter program is loaded and finally the outputs are activated Please push the phase invert button on the front panel to invert the phase of the output signal This may be necessary for some compact discs The activated phase inversion is indicated by the g...

Страница 6: ...ock The incoming data are loaded into a buffer which can store up to 0 7 seconds of music The stored data are read with an internally generated clock and converted The internal clock is generated with highest precision by two temperature regulated quartzes The clock generator is located next to the converter part in order to prevent electrical interference The temperature regulation circuit ensure...

Страница 7: ...ght attenuation for high frequency above about 17 kHz therefore shorter transient and ringing time Combined Audionet filter with adequate stop band attenuation and linear amplitude response 22 kHz Short transient time above 20 kHz because of renunciation of linear phase response Short filter according to the principle of the Lagrange polynoms therefore other weighting of the stop band attenuation ...

Страница 8: ...lters represent the latest state of filter technology The asymmetric filter developed by Audionet combines the merits of all filter types without accepting their disadvantages for the first time The DAC is completely decoupled from the clock of the signal source The internal clock is generated by two temperature regulated quartz oscillators The digital data is read out of a dynamic 2 megabit buffe...

Отзывы: