The ADX-1842 is a hi quality de-embedder designed to extract up to 4 AES 24-bit 48 kHz digital audio signals from a single HD/SD serial digital video signal. A unique feature is its ability to extract timecode, a serial RS-422 data signal & 2 GPI status signals from the...
Miranda ADX-1842 4 AES HD/SD de-embedder - ADX-1842
The ADX-1842 is a high quality de-embedder designed to extract up to four AES 24-bit 48 kHz digital audio signals from a single HD/SD serial digital video signal. A unique feature is its ability to extract timecode, 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, and it provides an analog audio monitor output for one selectable stereo pair of signals.
Key Features
HD-SDI or SDI input
Auto EQ for up to 110/250m (360/820 ft.)
Automatic detection of video input format
Two pass through HD-SDI/SDI video outputs
110 ohm balanced or 75 ohm unbalanced outputs
Selectable audio delay of up to 3 frames
24-bit digital audio de-embedding
Audio silence output on loss of video input
Left/right channels swappable
Selectable routing of AES
Co-phased audio outputs
Dolby-E compatible
Monitor output for non-PCM signals
LTC output translated from ATC data or DVITC
RS-422 serial data output
Two opto-isolated GPI outputs
Specifications
VIDEO INPUT
Video signal: HD/SD-SDI SMPTE 292M/SMPTE 259M-C (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 and GPI as per SMPTE 291M (with proprietary Type-1 DID)
Cable length: up to 110/250m (360/820 ft.) of Belden 1694A
Return loss: >15 dB up to 1.5 GHz
AUDIO AES-3id OUTPUT
Signal: AES-3id (SMPTE 276M)
Level: 1.0 Vp-p ±10 %
Impedance: 75Ω unbalanced
AUDIO AES3 OUTPUT
Signal: AES3
Level: 3.0 Vp-p ±10 %
Impedance: 110Ω balanced
ANALOG AUDIO OUTPUT (ADX-1851 only)
Quantizing: 24 bits
Level, 0 dBFS: +18 dBu, ±6 dB (1 dB steps)
Impedance: 50Ω
SNR: >92 dB (A weighting)
THD: <0,01 %
Dynamic range: >92 dB
Crosstalk: <90 dB (20 Hz to 20 kHz)
AUDIO AES SIGNAL
Sampling rate: 48 kHz synchronous
LTC SIGNAL OUTPUT
Signal: Reconstructed LTC from ATC/DVITC
Impedance: <55Ω source, unbalanced 1 kΩ load
Level: 1.0 Vp-p
RS-422 SIGNAL OUTPUT
Signal: RS-422
Rate: Reconstruction of signal input to embedder (38,400 or 115,200 Bd)
GPI SIGNAL OUTPUT (2)
Signal: Opto-isolated, common emitter
Forward voltage: 30V max
Reverse voltage: 5V max
Rate: DC to 250 Hz
VIDEO OUTPUT (Input active loop through)
Video signal: HD/SD-SDI SMPTE 292M/SMPTE 259M-C
Return loss: >15 dB up to 1.5 GHz
Wideband jitter: As per SMPTE-259M-C and 292M
PROCESSING PERFORMANCE
Signal path: 10-bit video / 24-bit audio
Audio latency: 875 μs (combined embedding and extraction*)
Audio delay: Up to 3 video frames (1/2 frame steps)
ATC/DVITC delay: None, 1, 2 or 3 frames before translation to LTC
RS-422 latency: 500 μs max. (combined embedding and extraction*)
GPI latency: 4 video lines (combined embedding and extraction*)
Test signals: Audio: 1 kHz tone (R steady, L pulsed) -18 dBFS (EBU R49, R68)
LTC: 10 s loop starting at 23:59:00:00
ELECTRICAL
Power: 9.5W
*Applicable to combinations of this card and AMX-1842/1852.