pro bel 4411 Technical Manual
Contents
1Introduction
2
2Installation
4
2.1Selecting a rear connector
4
3Configuration
6
3.1Configuring AES inputs 6
3.2Setting analogue output levels 7
4Trouble shooting
8
5COSMOS Status Monitoring 10
6Specification 12
7Ordering information
14
44111
Technical Manual
1 Introduction
The 4411 module is an audio digital to analogue converter which may be fitted with
one or two stereo DAC sub-boards, each providing electronically balanced analogue
outputs from balanced or unbalanced digital inputs.
Two rear connectors are available depending on the choice of balanced or
unbalanced digital I/O. The module is designed to fit in the 1050 3U and 1051 1U
Pro-Bel ICON modular product rackframes.
Characteristics of the 4411 module are:
• one or two stereo DACs per module
•
balanced or unblanced AES inputs
•
full 20 bit conversion
• electronically balanced outputs
•
conversion gain to match EBU or SMPTE levels
•
sample rate 32kHz to 54kHz (continuous)
• compatible with COSMOS, Pro-Bel status monitoring
2
Issue 1
Audio Digital to Analogue Converter
DC POWER
AND COSMOS
STATUS DATA
POWER
REG
STATUS
MON
AES/EBU
INPUT 1
ANALOGUE
AUDIO
OUTPUTS
DAC
DAC
AES/EBU
DE-MUX
L1
R1
DAC
DAC
AES/EBU
DE-MUX
L2
R2
AES/EBU
INPUT 2
ANALOGUE
AUDIO
OUTPUTS
The 4410 audio analogue to digital converter
44113
Technical Manual
2 Installation
For module installation instructions please refer to the appropriate ICON rack frame
section of the manual
2.1Selecting a rear connector
There are two alternative rear connectors available. The K4411.3B is used for
balanced signals, whilst the K4411.3U is used for unbalanced signals. Both occupy
30mm of rack width in the 1050 3U Icon rack frame or 1 slot in the 1051 1U rack
frame.
4
Issue 1
Audio Digital to Analogue Converter
AUX
OUT
K4411
.3U
AES 1 IN
AES 2 IN
AN AUD OUT
AES
IN
+
AUX
OUT
K4411
.3B
AN AUD
OUT
The following 5V ‘auxiliary’ signals are for Pro-Bel use only; CBL(block start), Channel
Status, User Data and Sample Rate Clock. These pins should not be grounded or
terminated.
44115
Technical Manual
Analogue audio out
PinFunctionPinFunction
1
AUDL1+
9
AUDL1-
2
GND
10
AUDR1+
3
AUDR1-
11
GND
4
N/C
12
N/C
5
GND
13
AUDL2+
6
AUDL2-
14
GND
7
AUDR2+
15
AUDR2-
8
GND
AES in + AUX out
PinFunctionPinFunction
1
N/C
14
N/C
2
Sample Rate Clock, Ch 1
15
Sample Rate Clock, Ch 2
3
GND
16
GND
4
N/C
17
N/C
5
CBL, Ch1
18
CBL, Ch 2
6
AES IP2-
19
AES IP 1 -
7
AES IP2+
20
AES IP1+
8
GND
21
N/C
9
N/C
22
Channel Status, Ch 2
10
Channel Status, Ch 1
23
GND
11
GND
24
N/C
12
N/C
25
User Data, Ch 2
13
User Data, Ch 1
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