Sonifex S2 - Page 125

S2 User Handbook
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S2ODAF/S2ODA DIGITAL OUTPUT AUD CHANNEL WITH & WITHOUT MASTER FADER VERSION 1
S2ODAF/S2ODA DIGITAL OUTPUT
AUD CHANNEL WITH & WITHOUT
MASTER FADER VERSION 1
Output Bit Depth J7 J8
16 bits Not Fitted Not Fitted
20 bits Fitted Not Fitted
24 bits Not Fitted Fitted
Reserved Fitted Fitted
Channel Status Bits J9
Consumer Not Fitted
Professional Fitted
Sync Select
The pair of jumpers, J10 and J11, select the sync source between AES, pins 1 & 2, and S/
PDIF, pins 2 & 3. The default is AES/EBU. Both jumpers need to be altered for this to work
correctly.
Digital Output Mode
Jumper J12 selects the digital output mode between AES/EBU, pins 1 & 2, and S/PDIF, pins
2 & 3. The default is AES/EBU.
Presets
Presets P1 & P2 are for altering the audio waveform symmetry (i.e. distortion) through the
VCA stage. They are factory set on nal test and should not be adjusted further.
Preset P3 sets the VCA fader gain to 0dB when the fader is fully open. This is preset on
nal test and should not require further adjustment, unless it has been found necessary to
replace the fader or other VCA components.
Presets, P5 (left) and P4 (right), set the peak digits through the conditioning circuits to
the analogue to digital converter. This is preset on nal test and should not require
urther adjustment.
Preset P8 sets the gain through the limiter that feeds the analogue to digital converters.
Preset P9 sets the threshold. Presets P6 & P7 are for altering the audio waveform symmetry
(i.e. distortion) through the limiting stage. They are all factory set on nal test and should
not be adjusted further.
Gain can be altered using P4 and P5 on board versions S2-OP-04 and above, as P8 is no
longer tted on these boards.
ADC Calibration
For optimum performance, the module should be calibrated when it has been powered up
for approximately 10-15 minutes. The circuitry and chipsets contained in the module will
warm up during this time and the performance will deteriorate unless calibrated (the noise
oor and dynamic range will be 1-2dB down on their best). The calibration cycle calibrates
the gain and the zero reference of the A/D converter.