474-Add-on Modules
Technical Data
61
Configuration of the Sample Rate
The sample rate of the balanced audio interface can be configured individually.
•
The default sample rate is 48.0 kHz.
•
The sample rate can be configured in the
Config.txt
file of the extender module with the balanced audio CPU
module. Therefore, the respective parameter
SRC
has to be entered into a new line. If there is not entered any
parameter, the sample rate 48.0 kHz will be used. The following additional sample rates can be configured:
−
32.0 kHz (enter
SRC32000
in
Config.txt
file)
−
44.1 kHz (enter
SRC44100
in
Config.txt
file)
−
88.2 kHz (enter
SRC88200
in
Config.txt
file)
−
96.0 kHz (enter
SRC96000
in
Config.txt
file)
−
176.4 kHz (enter
SRC176400
in
Config.txt
file)
−
192.0 kHz (enter
SRC192000
in
Config.txt
file)
Compatibility
Extender modules with balanced audio interface are compatible to extender modules with digital audio interface
regarding the transmission of the audio standard 2-channel PCM.
•
The compatibility shall be applied to the add-on module digital audio and the extender modules of the 481/491
and 483/493 Serie.
•
The compatibility is regardless of the input or output side, this means that a digital audio input is compatible to a
balanced audio output and vice versa.
Specification Balanced Audio
Parameter
Value
Bit depth
24 bit
Sample rate
32 to 192 kHz
Input signal level
Max. 6.4 dBu balanced (Gain: 0 dB)
Max. 0.4 dBu unbalanced (Gain: 0 dB)
Output signal level
8.1 dBu (balanced)
2.1 dBu (unbalanced)
Phantom power
48 V DC
Pre-amplification
10 to 65 dB
CPU Unit (Inputs)
1x 6-pole Phoenix terminal block
2x 6.,35 mm stereo jack plug (until 12/2021)
CON Unit (Outputs)
1x 6-pole Phoenix terminal block
2x 6.35 mm stereo jack plug (until 12/2021)
