Page 1
Contents
1Introduction
2
2Installation
4
2.1Selecting a rear connector
4
3Configuration
3.1Setting reference options6
3.2Configuring the AES reference7
3.3Configuring Video/Wordclock references7
3.4Setting the sample rate8
3.5Setting Full Scale Digital level8
3.6Setting the reference oscillator 9
4Trouble shooting10
5COSMOS Status Monitoring12
6Specification14
7Ordering information16
44101
Technical Manual
Page 2
1 Introduction
The 4410 module is an audio analogue to digital converter which may be fitted with
one or two stereo ADC sub-boards, each providing four balanced or unbalanced
digital outputs to AES3-1992.
The digital outputs can be configured to lock to one of three references, video,
wordclock or any valid balanced or unbalanced AES signal. 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 4410 module are:
•
one or two stereo ADCs per module
• four balanced or unblanced AES outputs per ADC
•
full 20 bit conversion
• AES 11, video and wordclock reference inputs or free-run on internal crystal
oscillator
•
digital peak level adjustable for EBU or SMPTE standards
•
32, 44.1 and 48 kHz sample rates
•
compatible with COSMOS, Pro-Bel status monitoring
2
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Audio Analogue to Digital Converter
DC POWER
AND COSMOS
STATUS DATA
SAMPLE
CLOCK
GEN
POWER
REG
STATUS
MON
ADC
ADC
ADC
ADC
AES/EBU
ENCODER
ANALOGUE
AUDIO INPUTS
STEREO 1
L1
R1
CRYSTAL
OSC
REFERENCE INPUT
AES II
VIDEO/
WORDCLOCK
AES/EBU
OUTPUTS
STEREO 1
AES/EBU
ENCODER
ANALOGUE
AUDIO INPUTS
STEREO 2
L2
R2
AES/EBU
OUTPUTS
STEREO 2
The 4410 audio analogue to digital converter
Page 3
44103
Technical Manual
Page 4
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 provided. The K4410.3B is used for
balanced signals, whilst the K4410.3U is used for unbalanced signals. Both occupy
30mm of rack width in the 1050 3U Icon rack frame.
4
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Audio Analogue to Digital Converter
AES
OUT
+
AES
REF
IN
K4410
.3B
VID REF
IN
AN AUD
IN
K4410
.3U
AES REF IN
VID REF IN
AES 1
OUT
AN AUD IN
AES 2
OUT
Page 5
44105
Technical Manual
Analogue audio in
PinFunctionPinFunction
1
AUDL1+
9
AUDL1-
2
GND
10
AUDR1+
3
AUDR1-
11
GND
4
Not used
12
Not used
5
GND
13
AUDL2+
6
AUDL2-
14
GND
7
AUDR2+
15
AUDR2-
8
GND
AES out/AES ref in
PinFunctionPinFunction
1
OP1-
14
OP2-
2
0P1-+
15
OP2+
3
GND
16
GND
4
OP1-
17
OP2-
5
0P1+
18
OP2+
6
Not used
19
AES REF IP -
7
Not used
20
AES REF IP+
8
GND
21
OP2-
9
OP1-
22
OP2+
10
OP1+
23
GND
11
GND
24
OP2-
12
OP1-
25
OP2+
13
OP1+
Page 6
3 Configuration
3.1Setting reference options
The 4410 digital audio encoder may be locked to one of three types of reference
signal, analogue video, wordclock or any valid AES 11 signal. When locked to video,
the line standard may be selected for 525 or 625 lines. In addition, the sample rate
may be selected as 32kHz, 44.1kHz and 48kHz. The selections are made using SW1
and SW2 on the front edge of the module.
SW2-4 takes precedence over SW1-4
Only one of the three possible references should be connected at any one time. In
the absence of a reference the module will free-run from an on-board crystal
oscillator.
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Audio Analogue to Digital Converter
Setting reference options
Dip SwitchSettingFunction
SW1-4
0
1
Wordclock reference on VID REF input
AES reference on AES REF input
SW2-4
0
1
AES/wordclock reference
Video reference
SW2-3
0
1
525/60 line standard
625/50 line standard
POLL
48K
44K
32K
SAMPLE
RATE
CH12
SW1-1
SW1-2
SW1-3
SW1-4
SW2-1
SW2
RV1
SW1
SW2-2
SW2-3
SW2-4
001
1
Page 7
3.2Configuring the AES reference
Jumper block PL5 is provided to set the AES reference termination value and select
balanced or unbalanced operation.
3.3Configuring Video/Wordclock
references
The analogue video reference input also doubles as an input for a wordclock
reference. Jumper PL7 is used to terminate this input with 75 W, however this
termination will need to be removed for bridging or looping purposes.
44107
Technical Manual
Example termination for
unbalanced 75 W AES reference
PL 5
PL 5
Example termination for
balanced 110 W AES reference
PL7
2
10
HI-Z TERM
I/P1
Set PL7 to Term for 75W termination
Set PL7 to Hi-Z for looping or bridging
reference configuration
Page 8
3.4Setting the sample rate
The sample rate may be selected as 32kHz, 44.1kHz or 48kHz by using front edge
mounted switch SW2. The appropriate card edge sample rate LEDs will illuminate
(green) to confirm the selection.
3.5Setting Full Scale Digital Level
Full Scale Digital is the analogue audio level which corresponds to the largest
possible digital value after conversion. Sufficient gain adjustment is provided to
more than meet international recommendations. The adjustment range is +15dBu to
+24dBu = 0dB,FSD. Standard factory setup is +18dBu=0dB, FSD for Europe and
+24dBu=0dB, FSD for the US. See ‘Ordering information’ for the appropriate order
codes for the two setup options.
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Audio Analogue to Digital Converter
Setting the sample rate
Jumper
SW2-1 SW2-2
Function
0
0
44.1 kHz
01
32 kHz
10
48 kHz
11
48 kHz
RV2
RV1
RIGHT
5634
LEFT
P
FSD adjustments
Page 9
3.6Setting the reference oscillator
The free-run speed of the reference oscillator may be set with RV1 on the 4410
module.
Adjust RV1 as follows:
•
set the card to operate from a video reference
•
pull the reference from the module, and use it to trigger an oscilloscope
•
display pin 74 of IC10, the large 208 pin EPF6106 chip on one channel of the
scope
• adjust RV1 so that the display locks relative to the video reference trigger
44109
Technical Manual
POLL
POWER
12 LOCK
13 LOCK
LOSS OF I/P
INVALID
48K
44K
32K
SAMPLE
RATE
CH12
9792898683807673706764595653162
167
170
173
176
179
186
189
192
195
198
203
206
SW1-1
SW1-2
SW1-3
SW1-4
SW2-1
SW2
RV1
SW1
SW2-2
SW2-3
SW2-4
0011PL 5
IC10 pin 74
Page 10
4 Trouble shooting
There is no output signal
•
ensure that the green power LED on the front of the card is lit
If not:
•
check the resettable fuses protecting the card - do this by removing the power
to the card for about 30 seconds then restore the power
• check the PSU indicators to confirm that there is power to the frame
• check that the inputs are connected to the rear panel and valid signals are
present
Note: The card edge green power LED will only illuminate if all voltage rails
regulated on the module are present.
The output signal is corrupted
•
check the quality of the input signal
• check that only one reference is present at the rear connector and that SW1 and
SW2 are selected correctly for the chosen reference
•
check that the green audio PLL lock LED is lit (12 LOCK)
• if an analogue video reference is used check that the green video PLL lock LED
(13 LOCK) is lit
• check that the red loss of reference LED (Loss Of Input) is not lit
•
if an AES 11 reference is used check that the red Invalid LED is not lit
• check that the appropriate termination has been set
•
check that the appropriate line rate has been selected
•
check that the appropriate sample rate has been selected
The output signal causes pops and clicks in downstream equipment
• check that the reference used has the correct phase and frequency as all other
digital audio equipment used in the system
Note: It is recommended to employ a common station video reference or a common
AES11 reference for all digital audio equipment if accurate phasing to station signals
is required throughout a facility. The 4410 should meet the timing requirements of
AES11 under these conditions.
10
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Audio Analogue to Digital Converter
Page 11
Status indicators
441011
Technical Manual
Status indicators
LED label4410 functionMeaning when lit
12 LOCK
Audio PLL lock
Lights green to show that audio clocks are locked to either,
video, AES11 or wordclock
13 LOCK
Video PLL lockLights green to show that audio clocks locked to video
LOSS OF I/P
Loss of reference
Lights red for loss of reference (video, AES 11 or wordclock
depending on switch setting)
INVALID
Invalid referenceLights red to Indicate invalid AES 11 reference
POWER
Power OKLights green if all voltage rails present
SAMPLE
RATE
48K
44K
32K
48kHz sample rate selected
44.1kHz sample rate selected
32kHz sample rate selected
POLL
POWER
12 LOCK
13 LOCK
LOSS OF I/P
INVALID
48K
44K
32K
SAMPLE
RATE
CH12
70
67
64
59
56
53
189
192
195
198
203
206
SW1-1
SW1-2
SW1-3
SW1-4
SW2-1
SW2
RV1
SW1
SW2-2
SW2-3
SW2-4
001
1
4410 status indicator assignments
Page 12
5 COSMOS Status Monitoring
If the frame is equipped with a COSMOS controller card, the following parameters
will be reported back to the COSMOS status monitoring system.
• module present
•
reference video present
•
reference video not locked
•
AES 11 reference present
• AES 11 reference locked
•
reference set up
•
sample rate selected
• audio and video PLL lock status
•
power OK
In addition, the module is programmed with the following information, which can be
read by the status monitoring controller:
• Module type
•
Module bar code
•
Module issue no
For further details of the Pro-Bel status monitoring system please refer to the
COSMOS status monitoring manual.
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Audio Analogue to Digital Converter
Page 13
441013
Technical Manual
Page 14
6 Specification
Inputs (per sub-module)
Number and type: 2, balanced, floating, analogue audio
Impedance:
20kW, 20Hz to 20 kHz (as per 5124)
Level for 0dB FSD: +15dBu to +24dBu
Reference: AES 11 1997, balanced or unbalanced or
Analogue video, 525/626 1V pp
or Wordclock 1V pp
Outputs (per sub-module)
Number and type:4, transformer coupled, balanced AES3-1992 or
unbalanced AES3-id, 75W
Channel status: AES3, standard implementation, embedded
Performance
Sample rate: 48, 44.1 or 32kHz
Frequency response:
± 0.05dB 50Hz to 15kHz,
± 0.2dB 40Hz to 20kHz
THD+N: <0.007% at 1kHz and -1dB FSD
<0.1%, 50Hz to 15kHz, -28dB FSD
Noise (idle channel): -96dB quasi-peak weighted
(-78dBu for 0dB FSD=+18dBu)
Common mode rejection: >60dB@ 1kHz, >46dB to 10kHz
Dynamic range: 107dB (measured)
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Audio Analogue to Digital Converter
Page 15
Indicators
Power on: Green LED
Loss of input: Red LED
Reference video present: Green LED
Video not locked: Red LED
AES 11 presentGreen LED
AES locked: Green LED
Sample rate: Yellow LEDs, 48, 44.1 and 32KHz
Temperature range
Operating:0° to +40°C
Storage:-10°C to +70°C
441015
Technical Manual
Page 16
7 Ordering information
ICO-4410-3BHS:Audio ADC with 30mm rear panel, balanced AES3 outputs,
peak level +24dBu, single stereo converter
ICO-4410-3BHD:Audio ADC with 30mm rear panel, balanced AES3 outputs,
peak level +24dBu, dual stereo converter
ICO-4410-3BLS:Audio ADC with 30mm rear panel, balanced AES3 outputs,
peak level +18dBu, single stereo converter
ICO-4410-3BLD:Audio ADC with 30mm rear panel, balanced AES3 outputs,
peak level +18dBu, dual stereo converter
ICO-4410-3UHS:Audio ADC with 30mm rear panel, unbalanced AES3
outputs, peak level +24dBu, single stereo converter
ICO-4410-3UHD:Audio ADC with 30mm rear panel, unbalanced AES3
outputs, peak level +24dBu, dual stereo converter
ICO-4410-3ULS:Audio ADC with 30mm rear panel, unbalanced AES3
outputs, peak level +18dBu, single stereo converter
ICO-4410-3ULD:Audio ADC with 30mm rear panel, unbalanced AES3
outputs, peak level +18dBu, dual stereo converter
16
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Audio Analogue to Digital Converter
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