Miranda DENSITE series Instruction Manual

SÉRIE DENSITÉ
DDA-1111 -Digital Audio Distribution Amplifier
Guide to Installation and Operation
M453-9900-100
January 2002
DDA-1111
Introduction
The Digital Audio Distribution Amplifier DDA-1111 supports
AES-3id 75 Ωand provides 9 outputs. The input features
clock regeneration for reduced jitter and signal restoration. A
signal detection stage permits to control the content of the
audio signal. A multi-coloured Led, visible with the door
closed, report the card status. The DDA-1111 requires a
"single " or a "double" rear connector panel.
Features
•Digital distribution amplifier 1 input 4 or 9 outputs
•AES-3id audio unbalanced input
•Remote control of carrier quality
•Silence detect with user adjustable delay and
threshold
•Status Led and remote reporting
•Signal regeneration
•V, U, C, P bits transparency
AUDIO
OUTPUTS
AUDIO
INPUT
Microcontroller
1
2
3
4
5
6
7
8
Rem Control
Select
Status
DDA-1111 Functional Block Diagram
Eq Reclocker
Audio
detection
9
Man. Auto
Specifications
Input
Signal: ......................AES-3id (SMPTE 276M)
Level:........................0.1 to 7.0 Vpp
Impedance:............... 75 Ωunbalanced
Equalization:.............0 to >1000 m
Outputs
Signal: ......................AES-3id (SMPTE 276M)
Level:........................1 Vpp
Impedance:............... 75 Ωunbalanced
Return loss:..............15 dB
Jitter reduction: ........>15 dB (@ 100 kHz)
Specific jitter:............<0.005 UI pp (700 Hz to 100 kHz)
Signal Processing
Sampling:..................28 to 100 kHz
Processing delay: .....<12 µs @ 48kHz
Signal absence
-threshold:................-48 / -72 dBFS (6 dB step)
-delay:......................de 0 to 255 s
V, U, C, P bits transparency
Miscellaneous
Power:.......................single: 1.4 W
..................................double: 2 W
Specifications are subject to change without notice.

DDA-1111
Guide to Installation and Operation
Menu Introduction
Most parameters are accessed and changed via an easy-to-use menu. The flow chart below outlines the entire DDA-1111
menu path. Each menu is described throughout this section.
The procedure and the operation mode are described in the common paragraph of the DENSITÉManual. The menu
organisation is made out of a main menu and several sub-menus. A press on the [SELECT] front panel push button accesses to
the menu. A lack of activity turns off the display. Default values are written with bold characters.
NO SIGNAL DELAY
CONFIGURE ALARM
STATUS
FACTORY DEFAULT
NO LOCK ALARM LEVEL
ALARM REPORT
BIPHASE CODING
ALARM REPORT
ALARM LEVEL
NONE, GPI
NONE, GPI
GREEN, YELLOW, RED, FLASH RED
GREEN, YELLOW, RED, FLASH RED
0, ..., 15, ..., 255 [sec]
REAR PANEL ERROR, NO LOCK, BIPHASE CODING, PARITY, CRCC, SLIPPED, CONFIDENCE,
UNVALID,NON AUDIO, NO SIGNAL 1, NO SIGNAL 2, NO SIGNAL 1&2, All OK
RESTORE
SIGNAL THRESHOLD -72, -66, -60, -54, -48 [dBFS]
PARITY ALARM LEVEL
ALARM REPORT
CRCC ERROR
ALARM REPORT
ALARM LEVEL
NONE, GPI
NONE, GPI
GREEN, YELLOW, RED, FLASH RED
GREEN, YELLOW, RED, FLASH RED
SLIPPED SAMPLE ALARM LEVEL
ALARM REPORT
CONFIDENCE
ALARM REPORT
ALARM LEVEL
NONE, GPI
NONE, GPI
GREEN, YELLOW, RED, FLASH RED
GREEN, YELLOW, RED, FLASH RED
UNVALID ALARM LEVEL
ALARM REPORT
NON AUDIO
ALARM REPORT
ALARM LEVEL
NONE, GPI
NONE, GPI
GREEN, YELLOW, RED, FLASH RED
GREEN, YELLOW, RED, FLASH RED
NO SIGNAL 1 ALARM LEVEL
ALARM REPORT
NO SIGNAL 2
ALARM REPORT
ALARM LEVEL
NONE, GPI
NONE, GPI
GREEN, YELLOW, RED, FLASH RED
GREEN, YELLOW, RED, FLASH RED
Menu Description
{STATUS}
Displays status of the different board alarms. The higher-level
alarm is displayed, even if not configured to activate the
STATUS Led. ALL OK indicates an absence of alarm.
REAR PANEL ERROR Indicates an absence of the rear
panel or an incompatibility between
the module and the rear panel. The
STATUS led turns on flashing red.
NO LOCK Indicates that the input stage is not
locked on the incoming AES.
BIPHASE CODING Indicates a biphase coding error .
PARITY Indicates a parity error.
CRCC Indicates a CRCC error.
SLIPPED Indicates a sample slipping.
CONFIDENCE Indicates an input signal up to be low.
UNVALID Indicates an invalid sample.
NON AUDIO Indicates the audio content is not
linear PCM samples.
NO SIGNAL Indicates an internal signal level lower
than the selected threshold during a
user defined period.

DDA-1111
Guide to Installation and Operation
{NO SIGNAL DELAY}
NO SIGNAL DELAY Signal absence is declared when
the level signal is lower than the
signal threshold during the selected
period, it can be adjusted from 0 to
255 s. The default value is set to 15
s.
{SIGNAL THRESHOLD}
SIGNAL THRESHOLD The absence signal threshold can
be adjusted from –72 to –48 dBFS
by 6 dB steps. The default value is –
60 dBFS.
{CONFIGURE ALARM}
t is possible to associate the STATUS Led colour and/or a
GPI relay activation to each detected error.
Alarm relay activation depends of the ENABLE selection of
the controller board menu GPI REPORT.
ALARM LEVEL Associates to each error the STATUS
led colour: GREEN, YELLOW, RED
and FLASH RED. This selection has
no influence on the {STATUS} menu
display.
ALARM REPORT The default value NONE is assigned
to errors. Alarm relay activation will
be associated to an error when GPI is
set..
{FACTORY DEFAUT}
RESTORE Set the module with the factory
default parameters.
Status and Report
This table shows the front Led colour and the report action according to the level of a given error condition. Notice that the
“Flashing Yellow” Status LED indicates that the SELECT button on the front panel has been pushed, and the card is being
accessed via the communication protocol.
Serial
Report GPI Report Green Yellow Red Flashing Red Flashing Yellow
NO LOCK on digital input µµ-
Biphase Coding Error µµ-
Parity Error µµ-
CRCC Error µµ-
Slipped Sample µµ-
Confidence µµ-
Unvalid µµ-
Non Audio µµ-
No signal detected on Input 1 µµ-
No signal detected on Input 2 µµ-
Card accessed via the communication protocol ------Yes
Rear Panel not matching -----Yes -
Factory default: µµ
Note: The non requested message affectation to an alarm status can only be accessed by the communication protocol (serial
port)

DDA-1111
Guide to Installation and Operation
Front Edge Presentation Board Presentation
PT1
GAIN
(MANUAL)
STATUS
D1
SELECT
SW1
Push ButtonStatus Indicator
DDA-1111
Gain Adjust.
ST1
MANUAL
EQ
AUTO
Auto/Manual
Equalization
Configuration
PT1
GAIN
(MANUAL)
CABLE EQUALIZATION ADJSUTMENT
Trimmer for fine adjustment of the input signal
equalization
ST1
MANUAL
/ AUTO
MANUAL / AUTOMATIC EQULAIZATION SELECTION
When the cable length is known, best results can
be
obtained in the manual setting.
Connections
DDA-1111 is used with the single rear panel DDA-1111-SRP
that includes 1 input to 4 outputs or with the double rear panel
DDA-1111-DRP that includes 1 input to 9 outputs.
DDA-1111-DRP DDA-1111-SRP
DDA-1111
1
2
3
4
5
6
7
8
9
AUDIO OUT AUDIO OUT
AUDIO
IN
DDA-1111
1
2
3
4
AUDIO OUT
AUDIO
IN