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6

 

                                     User's Guide 

ADI-8 PRO  © RME

 

 

5. First Usage - Quick Start 

 
The clearly structured front panel design ensures an easy start when working with the device 
for the first time. Nevertheless we recommend to study at least the chapters 'Clock Section' and 
'Copy Mode', as the extensive usage of format converter and clock options may result in some 
behaviour that may require further explanation. 
 
Connect the analog inputs with the analog signal source. Change the input sensitivity by press-
ing INPUT LEVEL until the input level is sufficient to avoid noisy operation. Try to achieve an 
optimum input level by adjusting the source itself. Raise the input level until the Over LED's 
flash at the loudest parts of the signal, then reduce the level a bit until no more overs are de-
tected. 
 
The analog line inputs of the 

ADI-8 PRO

 can be used with +4 dBu and -10 dBV signals. 

They are fitted with both D-sub (for an optional XLR multicore) and 1/4" TRS jacks. Both are 
internally connected, so not operational at the same time. The electronic input stage is built in a 
servo balanced design which handles monaural and stereo jacks correctly. When used unbal-
anced it automatically corrects the gain by 6 dB. 
 
When switched on the 

ADI-8 PRO

 starts in a default mode which should be suitable for 

most applications: 
 

• 

AD-converter in master mode (CLOCK INTERNAL) 

• 

DA-converter in slave mode (CLOCK INPUT) 

• 

Sample rate 44.1 kHz 

• 

Input ADAT optical 

 
On the DA-side you just have to choose the desired digital input by pressing DIGITAL INPUT. A 
coarse correction of the analog output level can be done by pressing OUTPUT LEVEL. 
 
The 

ADI-8 PRO

 stores all current settings and automatically activates them when the de-

vice is turned on. 
 
Transferring digital data into a PCI bus equipped computer is best done using RME's digital 
interface cards of the DIGI96

®

 and Hammerfall

®

 series. These hi-quality cards come with driv-

ers for all popular operating systems. They have a world wide reputation as ultimate solution for 
master and multitrack tasks. 
 

Summary of Contents for ADI-8 PRO

Page 1: ...s Guide SyncAlign SyncCheck Intelligent Clock Control TM Hi Precision 24 Bit 48 kHz 8 Channel AD DA Converter ADAT optical TDIF 1 Interface Digital 24 Bit Interface Format Converter 24 Bit Interface T...

Page 2: ...2 User s Guide ADI 8 PRO RME...

Page 3: ...s 6 1 Analog Inputs 7 6 2 Analog Outputs 8 6 3 Digital Inputs 9 6 4 Digital Outputs 10 6 5 Word Clock Input and Output 11 7 Clock Section 12 8 Word Clock 8 1 Operation and Technical Background 13 8 2...

Page 4: ...d op erate as remote controlled level attenuators Two switches on the front panel control all elec tronic switches of all channels for a perfect adaptation to the most often used levels 10 dBV and 4 d...

Page 5: ...HD 104 dB 0 00063 THD N 102 dB 0 0008 Crosstalk 110 dB Maximum output level DA 19 dBu Frequency response DA 0 1 dB 5 Hz 21 6 kHz Output Line 1 4 TRS and 25 pin D sub servo balanced Output impedance Li...

Page 6: ...nal XLR multicore and 1 4 TRS jacks Both are internally connected so not operational at the same time The electronic input stage is built in a servo balanced design which handles monaural and stereo j...

Page 7: ...he audio path The key INPUT LEVEL allows a perfect adaptation for all 8 channels to the most often used levels 10 dBV and 4 dBu Each analog input has a Signal Ok and Over LED so levels and Overload of...

Page 8: ...includes electronic switches of the newest technology which introduce no additional noise or distortion to the audio path The key OUTPUT LEVEL allows to change the output level of all 8 channels simul...

Page 9: ...an interface for example DA 38 and DA 88 A low jitter PLL ensures best playback sound quality and reliable operation RME s exclusive SyncCheck verifies synchronous operation when using both TDIF port...

Page 10: ...from the ADI 8 PRO Carries the channels 5 to 8 split into 16 bit and 8 bit The TDIF 1 connectors of the ADI 8 PRO are fully compatible to all devices with such an interface for example DA 38 and DA 88...

Page 11: ...osition Another push will release it again and de activate the termination Output The word clock output is constantly active and basically delivers the sample rate of the AD converter As long as it is...

Page 12: ...state of the ADI 8 PRO is indicated by a blinking error or constantly lit Ok EXT or INPUT LED in the Clock section Clock Mode D A Internal Clocking the DA converter from the internal quartz crystal i...

Page 13: ...ected together But word clock is not only the great problem solver it also has some disadvantages The word clock is based on a fraction of the really needed clock For example SPDIF 44 1 kHz word clock...

Page 14: ...ock output that can only be called unsatisfactory If the output breaks down to 3 Volts when terminating with 75 Ohms you have to take into account that a device of which the input only works from 2 8...

Page 15: ...ound When BIT SPLIT is active the analog ins are processed to the digital outs as shown below Input 1 2 3 4 5 6 7 8 Output Port 1 5 MAIN 2 6 MAIN 3 7 MAIN 4 8 MAIN 1 5 AUX 2 6 AUX 3 7 AUX 4 8 AUX As l...

Page 16: ...possible to copy the input signal directly to a device of the same format without the need of changing connectors or cables As long as BIT SPLIT isn t activated MAIN and AUX also operate simultaneous...

Page 17: ...zero would be the result This is wrong All parts of the signal which were originally below 96 dB will still be present in the 16 bit version FFT proves this but not at the original levels In the earl...

Page 18: ...Word clock signal INT Quarz 44 1 or 48 kHz Level Indication OK 40 dBFS OVR Overload Bit Split DA Converter On Off Power Select Output level Hi Gain 4 dBu 10 dBV COMBINE AUX Sync Copy Mode Signal OK 4...

Page 19: ...1 version 1 1 Signal Out 1 2 Out 3 4 Out 5 6 Out 7 8 Out LRCK Out EMPH Out FS0 Out FS1 D sub 1 2 3 4 5 18 6 19 Signal In FS1 In FS0 In EMPH In LRCK In 7 8 In 5 6 In 3 4 In 1 2 D sub 20 8 21 9 10 11 12...

Page 20: ...20 User s Guide ADI 8 PRO RME 13 Block diagram...

Page 21: ...D 09648 Mittweida Trademarks All trademarks and registered trademarks belong to their respective owners RME SyncAlign DIGI96 ZLM Hammerfall and SyncCheck are registered trademarks of RME Intelligent...

Page 22: ...s subject to the following two condi tions 1 This device may not cause harmful interference 2 This device must accept any interference received including interference that may cause undesired operatio...

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