Miranda DENSITE Series Manual To Installation And Operation

SÉRIE DENSITÉ
DDA-1111
Introduction
The Digital Audio Distribution Amplifier DDA-1111 supports
AES-3id 75 Ω and 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.
AUDIO
INPUT
Eq
Man. Auto
Specifications
Input
Signal: ...................... AES-3id (SMPTE 276M)
Level:........................ 0.1 to 7.0 Vpp
Impedance:............... 75 Ω unbalanced
Equalization:............. 0 to >1000 m
Outputs
Signal: ...................... AES-3id (SMPTE 276M)
Level:........................ 1 Vpp
Impedance:............... 75 Ω unbalanced
Return loss: .............. 15 dB
Jitter reduction: ........ >15 dB (@ 100 kHz)
Specific jitter: ............ <0.005 UI pp (700 Hz to 100 kHz)
Specifications are subject to change without notice.
Reclocker
Select
Microcontroller
Status
DDA-1111 Functional Block Diagram
DDA-1111 - Digital Audio Distribution Amplifier
Guide to Installation and Operation
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
detection
Rem Control
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
M453-9900-100
January 2002
1
2
3
4
AUDIO
OUTPUTS
5
6
7
8
9