DMA2
2 Channel Digital Microphone Amplifier

The ADR DMA2 has two independent low noise microphone inputs which can be routed through to a single AES output. The unit can be locked to an external AES sync input. Analogue gain for each input channel is set by front panel push button switches. LEDs indicate digital headroom. Front panel switches also set 48v phantom powering, phase reverse and high pass filters for each channel. Full remote control of the front panel functions can be accessed via RS232 or optional RS485 port.

Inputs and outputs on XLR connectors. 1U Rack mounting. 24bit 120dB dynamic range ADC E.I.N. Source resistance 150R -128dBu. Front panel controls for easy access. Output ‘shuffle’ switch. Switchable high pass filter on each input. AES/EBU digital output at 44.1,48,88.2 & 96KHz. AES external Sync 30KHz - 100KHz RS232 Remote Control - RS485 Option.
All the panel controls can be set in tamper-proof mode.

 
 

 

ADR Price List
DMA-2 Data Sheet


 
 
 
 
 
 

 

  
 
The DMA2 has been developed as a direct result of our experience in installing turn-key radio solutions. This device has been designed to take advantage of digital technology that has now become common practice in this industry.
SPECIFICATION:

Analogue Input Section:
Electronically Balanced Inputs(XLR-F)
Input Impedance: >10K
Input gainRange: 80dB variable from -70dButo +10dBu (Mic to Line levels)
HighPass Filtering: 3rd order -3dB@100HZ
THD+N: 0.003% @ -20dBu mic operating level.
Phantom: Internally generated 48Volts
Channel Metering: 3 led Bar: -18dBF (set-up for ppm 4), 10dBF (ppm 6 normal operating), 0dBF (max clip level)

AES DIGITAL Section:
1 balanced External AES3 Sync input (XLR-F) 110imp
1balanced AES3 Transformer output (XLR-M) 110imp
Output level (loaded to 110): 5volts p-to-p
Output jitter: <0.5nS@32kHz,44.1,48,96KHz. RemoteControl RS232: 9-PinD-Sub for PC full remote control.
Optional RS485 control port

POWER: 90-250V/45 65Hz, IEC fused inlet with on/off rocker switch Fusetype:T3A

SIZE: 482.60mm (19") wide x 44.45mm (1U) high x 153mm deep

WEIGHT: 1.0Kg