specifications
audio performance
Note
Wherever dB values are specified, the following conventions apply:
0 dBu
0.775 V r.m.s. reference
0 dBm
1 mW (0.775 V r.m.s.) into 600
Ω
dBfs
referenced to digital full scale
dBr
referenced to max. analogue operating level
dB
referenced to unity gain
* Noise figures are measured with a bandwidth from 20 Hz to 20 kHz
Sample Rates
44.1 kHz to 48 kHz ± 12.5%
(The OXF-R3 always requires an external BNC audio word clock)
DMBK-R3001/R3002/R3003/R3004
DMBK-R3001 (4-ch ADC)
DMBK-R3003 (8-ch ADC)
Gain Control
Mic: -20 dB to +80 dB relative to op level in 1 dB steps
Mic: -20 dB to +80 dB relative to op level in 1 dB steps
Line: -30 dB to +20 dB relative to op level in 1 dB steps
Line: -30 dB to +20 dB relative to op level in 1 dB steps
Input Impedance
Mic: 1.5 k
Ω
or 100 k switchable
Mic: 100 k
Ω
Line: 16 k
Ω
Line: 16 k
Ω
Frequency Response
20 Hz to 20 kHz ±0.2 dB
20 Hz to 20 kHz ± 0.2 dB
Distortion
0 dBfs: <-96 dBfs (0.005% THD+N)
0 dBfs: <-96 dBfs (0.005% THD+N)
-20 dBfs: Harmonic content -115 dBfs
-20 dBfs: Harmonic content -115 dBfs
-50 dBfs: Harmonic content <-135 dBfs
-50 dBfs: Harmonic content <-120 dBfs
Noise Floor
Mic: <-125 dBu Equivalent Input Noise
Mic: <-125 dBu Equivalent Input Noise
(Zin = 200
Ω
, Gain = 80 dB)
(Zin = 200
Ω
, Gain = 80 dB)
Line: -108 dBfs Gain Control at 0 dB
Line: -105 dBfs Gain Control at 0 dB
Crosstalk
<-90 dBfs, 20 Hz to 20 kHz
<-90 dBfs, 20 Hz to 20 kHz
CMRR
Mic: 45 dB, 20 Hz to 20 kHz (Gain = 0 dB)
Mic: 45 dB, 20 Hz to 20 kHz (Gain = 0 dB)
110 dB, 20 Hz to 20 kHz (Gain = 80 dB)
110 dB, 20 Hz to 20 kHz (Gain = 80 dB)
Line: 50 dB, 20 Hz to 20 kHz (Gain = 0 dB)
Line: 50 dB, 20 Hz to 20 kHz (Gain = 0 dB)
Phantom Power Supply
Mic: DC 48 V individually switched
Mic: DC 48 V individually switched
DMBK-R3002 (4-ch DAC)
DMBK-R3004 (8-ch DAC)
Output Type
Electronically floating
Electronically balanced
Performance identical in bal.and unbal. modes
Maximum Output
+24 dBu
+24 dBu into balanced load
+20 dBu into unbalanced load
Output Level Control
-16 dBu to +24 dBu set by console menu
+14 dBu to +24 dBu set by trimmer on module
Equivalent Source Impedance
<10
Ω
<100
Ω
Output Balance
20 Hz to 20 kHz, 60 dB (0.1%)
20 Hz to 20 kHz, 46dB (0.5%)
Minimum Load
300
Ω
300
Ω
Frequency Response
@ Fs 48 kHz
20 Hz to 20 kHz ±0.2 dB
20 Hz to 20 kHz ±0.2 dB
Output Noise
<109 dB (ref +24 dBu)
<104 dB (ref +24 dBu)
Crosstalk
<-100 dBfs, 20 Hz to 20 kHz
<-100 dBfs, 20 Hz to 20 kHz
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