Miranda DENSITE Series Manual To Installation And Operation

(DENSITÉ) SERIES
Description
The ADX-1121 is a high-quality disembedder designed to extract
up to two AES/EBU 24-bit 48kHz digital audio signals from a
single SMPTE 259M component serial digital video signal. The
module supports signal presence detection and remote reporting,
and local or remote configuration and control. The card has built-
in audio tone test signals.
The ADX-1121 is designed for use in the DENSITÉ frame, and
uses either a single or double-width rear panel.
Video Features
•
Isolated serial SDI input with automatic equalization for up
to 350m of cable.
•
Automatic detection of loss of SDI input and switchover to
audio silence
•
Auto-detects video input format (525 or 625 lines)
•
Three SDI pass-through outputs when using double rear
panel
FUNCTIONAL BLOCK DIAGRAM
V I D E O
E Q
IN
Test
Processor
Signals
R E M O T E
µController
C O N T R O L
SPECIFICATIONS SPECIFICATIONS SPECIFICATIONS SPECIFICATIONS
VIDEO INPUT
Video Signal: SDI SMPTE 259M-C (270 Mbps)
Cable Length: up to 350m of Belden 1694A
Return Loss: >15 dB, 5 MHz to 270 MHz
AUDIO AES-3id OUTPUT
Signal: AES-3id (SMPTE 276M)
Level: 1.0 Vp-p ±10%
75 Ω unbalanced
Impedance:
AUDIO AES3 OUTPUT
Signal: AES3
Level: 3.0 Vp-p ±10%
110 Ω   b alanced
Impedance:
ADX-1121
Data Selectable
Delay
ADX-1121 2- AES/EBU Digital Audio Disembedder (SDI)
Audio
Features
• AES/EBU outputs: either 110 Ω balanced or 75 Ω
unbalanced, depending on rear panel in use
•
Selectable audio delay up to 6 fields
•
20 or 24-bit digital audio disembedding
•
Outputs audio silence if SDI input is lost
•
Left/Right channels may be swapped on each of the
AES/EBU output signals
•
Selectable routing of audio groups to AES audio outputs
•
All audio outputs are co-phased
•
Dolby-E compatible
•
Up to 48 AES/EBU signals can be disembedded from the
active data area using multiple disembedders
Other Features
•
Linear Time Code (LTC) output reconstructed from ANC
data inserted by the embedder
SPECIFICATIONS(cont'd) SPECIFICATIONS(cont'd)
SPECIFICATIONS(cont'd) SPECIFICATIONS(cont'd)
AUDIO AES SIGNAL
Sampling Rate:
Bits:
V I D E O
O U T
LTC SIGNAL
Signal:
1
A E S
O U T
Impedance:
2
Level:
L T C O U T
VIDEO OUTPUT (Input active loop-through)
Video Signal:
Return Loss:
Wideband Jitter:
PROCESSING PERFORMANCE
Signal Path:
Audio Processing
Delay:
Audio Delay:
LTC Processing
Delay:
LTC Delay:
Test Signals:
Power:
Note ‡‡: Applicable to combinations of AMX-1121/1141 &
ADX-1121/1141
ADX-1121
Guide to Installation and Operation
M678-9900-100
September 2003
48kHz synchronous
20 or 24-bit (other bit resolutions padded to
20 or 24-bit)
Reconstructed LTC from sampled input
to Embedder
< 55 ohm source for Hi-Z termination
1.0 Vp-p
SDI SMPTE 259M-C
>15 dB up to 270 MHz
< 0.2 UI p-p
10-bit video / 20/24 bit audio
600 µs audio insertion delay (combined
embedding and extraction ‡‡)
Up to 6 video fields (one field steps)
8 video lines (combined embedding
and extraction ‡‡)
None or tracking of audio delay
Audio - 1 kHz tone (R steady, L pulsed)
-18dBFS (EBU R49, R68)
5 W
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