Date printed: 24.01.12
28
D21m System
6.2.3 Hd Mic/line In Card
(
and
)
A949.0447
Four analog microphone/line inputs, transformer-balanced, with 24 bit,
44.1/48/88.2/96 kHz delta-sigma A/D converters. Four analog split outputs,
electronically balanced. Green ‘signal present’ and yellow ‘phantom power’
indicators per channel. Mic/line sensitivity, gain setting in 1 dB steps, low-
cut filter, soft clipping and 48 V phantom power on/off are controlled by the
console software. Inputs and split outputs on a standard 25-pin D-type con-
nector (female).
Notes As opposed to the Mic/Line Input card A949.0427, the gain of the split outputs
is always unity, i.e., 0 dB.
This card does not support the Analog Insert Card A949.0428.
Gain setting: 15 dBu 0 dB
FS
, unless otherwise noted.
Input sensitivity
(for 0 dB
FS
)
–60…+26 dBu
Input impedance
2.2 k
Ω
Split out gain
0 dB
Split out impedance
100
Ω
Equivalent input noise
(Ri 200
Ω
, max. gain)
–124 dBu
Crosstalk
(1 kHz)
< –110 dB
Frequency response
(30 Hz-20 kHz)
–0.2 dB
THD&N
(1 kHz, input level –6 dBu)
< –88 dB
(40 Hz-20 kHz, input level –30 dBu)
< –100 dB
CMRR
(30 Hz-20 kHz, all gain settings)
> 60 dB
Low-cut filter
75 Hz, 12 dB/oct.
Input delay
(local)
38 samples (0.79 ms @ 48 kHz)
(remote)
45 samples (0.94 ms @ 48 kHz)
Current consumption
(7 V)
0.2 A
(±15 V)
0.25 A
Operating temperature
0-40 °C
Backplane Connector
A
D
48 V Phantom Pwr
Control Logic
Sensitivity
–60...+26 dBu
Soft
Clipping
High-Pass
Filter
Sensitivity Control
Filter Control
Soft Clipping Control
Mic/Line In 1
Mic/Line In 2
Mic/Line In 3
Mic/Line In 4
Split out 1
Split out 2
Split out 3
Split out 4