ADX-1852 HD/SD 4 AES Disembedder w. Analog Audio Monitor
ADX-1842 HD/SD 4 AES Disembedder
Guide to Installation and Operation
M682-9400-101
February 2005
ADX-1842/1852
Page 1 of 10
ADX-1842/1852
Description
The ADX-1842 is a high-quality disembedder designed to
extract up to four AES 24-bit 48kHz digital audio signals
from a single HD/SD serial digital video signal. A unique
feature is its ability to extract time code, a serial RS-422
data signal and two GPI status signals from the video
signal. The module supports signal presence detection,
remote reporting, and local or remote configuration and
control, and features a built-in audio tone test signal.
The ADX-1852 has all of the features of the ADX-1842,
excluding the HD/SD-SDI loop through outputs, plus it
provides an analog audio monitor output for one selectable
stereo pair of signals.
The ADX-1842 and ADX-1852 are designed for use in the
DENSITÉ frame, with the appropriate double-width rear
panel.
Video - Features
•
Serial HD/SD-SDI input with automatic equalization for
up to 110m/250m of cable
•
Automatic detection of video input format
•
Two pass-through HD/SD-SDI video outputs (ADX-
1842 only)
Audio - Features
•
AES outputs: either 110
Ω
balanced or 75
Ω
unbalanced, depending on rear panel in use
•
Selectable audio delay of up to 3 frames in ½ frame
steps
•
24-bit digital audio disembedding
•
Audio silence output on loss of video input
•
Left/Right channels swappable for each AES output
•
Selectable routing of audio groups to AES outputs
•
Co-phased audio outputs
•
Dolby-E
compatible
•
Monitor selector for Densité frame monitoring switch
bridge (MSB) and analog, stereo audio output (ADX-
1852 only)
•
Analog monitor output muting for non-linear PCM AES
signals
Disembedding Other Signals - Features
•
Linear Time Code (LTC) output translated from
Ancillary Time Code (ATC) data or Digital Vertical
Interval Time Code (DVITC)
•
RS-422 serial data output signal reconstructed from
ANC data inserted by the embedder
•
Two opto-isolated GPI data output signals
reconstructed from ANC data inserted by the embedder
FUNCTIONAL BLOCK DIAGRAM
SPECIFICATIONS
VIDEO INPUT
Video Signal:
HD/SD-SDI SMPTE 292M/SMPTE
259M (see list of supported formats
below)
Embedded audio as per SMPTE
299M/SMPTE 272M
Embedded ATC/DVITC as per SMPTE
RP 188/SMPTE 266M
Embedded RS-422 & GPI as per
SMPTE 291M (with proprietary Type-1
DID)
Cable Length:
up to 110m/250m of Belden 1694A
Return Loss:
>15 dB, 5 MHz to 1.5 GHz/270MHz
AUDIO AES-3id OUTPUT
Signal:
AES-3id (SMPTE 276M)
Level:
1.0 Vp-p ±10%
Impedance:
75
Ω
unbalanced
AUDIO AES3 OUTPUT
Signal: AES3
Level:
3.0 Vp-p ±10%
