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Main / Audio ADC, DAC, delay lines / PADA-3104
PADA-3104 series 2-channel audio DAC/delay line |
PROFLEX™ PADA-3104 series 2-channel audio DAC/delay lines accept the AES/EBU digital audio signals to convert into analog domain with 24-bits accuracy. Two balanced analog outputs are provided. Manual audio delay adjustment or automatic "audio follows video" mode (available if controlled by "PROFITT"s network).
Features
- 24-bits Delta-Sigma convertion (with 16- to 24-bits data words capability
- 32kHz, 44.1kHz, 48kHz and 96kHz sampling rates
- audio delay adjustment up to 1.3s
- user-presettable 0dB or +6dB output level (+18dB or +24dB maximum output level)
- audio gain presets in the -12dB...+12dB range
- AES/EBU signal presence and CRC indication
- two balanced analog outputs (one stereo pair
- built-in test signal generator (1kHz and "mute")
Technical specifications
| frequency response |
0.1dB from 20Hz to 20kHz |
| THD |
less than 0.01% at 1kHz |
| SNR |
better than 85dB |
| sampling rates |
32kHz, 44.1kHz, 48kHz, 96kHz |
audio delay time adjustment
(20ms coarse, 2ms fine increments) |
1,3ms minimum |
| 1.3s maximum |
| indication |
input signal CRC errors |
| input signal parity errors |
| AES/EBU input signal detected |
| input signal sampling rate |
| test signal generator |
1kHz at -20dB |
| "mute" signal |
| audio gain presets |
from -12dB to +12dB with 0.5dB steps |
PADA-3104 simplified schematic
PADA-3104 rear panel view
- Inputs
- balanced digital
| signal type |
AES/EBU or S/PDIF |
| input amplitude |
0.2~7.0V p-p at 110 Ohm |
| connector type |
DB-25 |
| input impedance |
110 Ohm |
| sampling rate |
32kHz, 44.1kHx, 48kHz, 96kHz |
- unbalanced digital
| signal type |
AES/EBU or S/PDIF |
| input amplitude |
0.5V p-p at 75 Ohm |
| connector type |
BNC |
| input impedance |
75 Ohm |
| sampling rate |
32kHz, 44.1kHx, 48kHz, 96kHz |
- Output
- analog audio
| number of outputs |
two balanced (one stareo pair) |
| output amplitude |
0dB (1.096V) nominal |
| +24dB (17.6V) maximum |
| output impedance |
less than 50 Ohm |
| DAC |
24-bits Delta-Sigma |
| connector type |
DB-25 |
Controls and indicators
PADA-3104 frontal panel view
Controls
The MODE button toggles through all the modes, the "-" and "+" buttons edit them. The simultaneous depression of the "+" and "-" buttons resets a currently selected parameter to it's default value.
- DELAY FIELD – audio delay coarse adjustment (20ms increments). The main display shows the current setting in "units", the "unit" equals to 20ms.
- DELAY FINE – audio delay fine adjustment (1ms increments). The main display shows the current setting in milliseconds. Incrementing (or decrementing) beyond the 20ms boundary will increment (or decrement respectively) the coarse setting by one "coarse unit".
- TEST – an audio test signal selection. The main display shows the currently selected test as follows:
- 00 – test signal is OFF
- 01 – the MUTE test signal
- 02 – 1kHz sine wave at -18dBFs (0dBu)
- 03 – "Left" channel only 1kHz sine wave at -18dBFs (0dBu)
- 04 – "Right" channel only 1kHz sine wave at -18dBFs (0dBu)
- +6dB – fixed +6dB output level ON/OFF
- GAIN – manual audio gain presets within the –12dB to +12dB range in 0,5dB increments. The “<0dB” and “0dB>” LEDs display positive and negative levels respectively. The main display shows the actual level in deciBells
Indicators
- OVER L/R – the "Left" and "Right" input overload indication
- 32kHz, 44,1kHz, 48kHz, 96kHz - the currently used AES sample rate indicators
- LOSS – lit when the input AES/EBU signal is lost
- BICODE – lit when the biphase encoding error is detected in the input AES/EBU signal
- PARITY – lit when the parity error is detected in the input AES/EBU signal
- CRC – lit when the CRC error is detected in the input AES/EBU signal
The remote control and management from a PC
All the “PROFLEX” modules are remote controllable from a PC. This facility is available if a rack is fitted with a CPU module (ordered separately).
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