The AMX-1842 is a hi-quality embedder which embeds up to 4 AES 24-bit 48kHz digital audio signals into a single HD/SD serial digital video signal. It includes audio & video signal presence detection & reporting, & local or remote configuration & control. A unique...
Miranda AMX-1842 2 AES digital audio embedder - AMX-1842
The AMX-1842 is a high-quality embedder which embeds up to four AES 24-bit 48kHz digital audio signals into a single HD/SD serial digital video signal. It includes audio and video signal presence detection and reporting, and local or remote configuration and control. A unique feature is its ability to embed timecode, a serial RS-422 data signal and two GPI status signals into the video signal. The card has built-in audio tone, timecode and video color bar test signals.
Key Features
HD-SDI or SDI input
Automatic EQ for up to 110/250m (360/820 ft.)
Automatic detection of video input format
Continuity of embedded audio on loss of video input
110 ohm balanced or 75 ohm unbalanced input
Input SRC to handle asynchronous audio
Audio channel gain selectable
Audio group insertion/bypass/delete
Selectable audio delay of up to 3 frames
Automatic mute on AES error
Selectable routing of AES signals
Left/right channels swappable
Dolby-E compatible
24-bit digital audio embedding
Linear timecode (LTC) embedding
RS-422 input for embedding as ANC data
GPI inputs for embedding as ANC data
Specifications
VIDEO INPUT
Video signal: HD/SD-SDI SMPTE 292M / SMPTE 259M-C
Cable length: Up to 110/250m (360/820 ft.) of Belden 1694A
Return loss: >15 dB, 5 MHz to 1.485 GHz
AUDIO AES-3id INPUT
Signal: AES-3id (SMPTE 276M)
Level: 0.2 to 2.0 Vp-p
Impedance: 75Ω unbalanced
Cable length: >400m (1,312 ft.)
AUDIO AES3 INPUT
Signal: AES3
Level: 0.2 to 7.0 Vp-p
Impedance: 110Ω balanced
Cable length: >200m (656 ft.)
AUDIO AES SIGNALS
Sampling rate: 48 kHz synchronous or asynchronous
Dolby-E rate: 48 kHz synchronous
Bits: 24-bit
LTC SIGNAL
Signal: LTC per SMPTE 12M
Impedance: <10 kΩ (bridging 600Ω) unbalanced
Level: 0.2 to 5 Vp-p
VIDEO OUTPUT
Video signal: HD/SD-SDI (SMPTE 292M / SMPTE 259M-C)
Audio embedded per SMPTE 299M / SMPTE 272M
LTC embedded as ATC/DVITC (SMPTE RP188/SMPTE 266M)
RS-422 and two GPIs embedded as ANC data per SMPTE 291M (Proprietary type 1 DID)
Return loss: >15 dB up to 1.485 GHz
Wideband jitter: as per SMPTE-259M-C and 292M
ANC SERIAL DATA INPUT
Signal: RS-422
Level: 200 mVp-p (min)
Rate: 38.400 or 115.200 Bd
ANC GENERAL PURPOSE INTERFACE (GPI) INPUT
Signal (2): Contact closure (opto-isolated), common ground
Level: True = 0 to 0.8 V (max.)
Maximum input voltage = ±5.5 V
Rate: DC to 250 Hz
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: 10s loop starting at 23:59:00:00
RS-422
Latency: max 500 µs*
GPI
Latency: 4 video lines*
Test signals: Video - color bars 100%
Audio - 1 kHz tone (R steady, L pulsed) -18 dBFS (EBU R49, R68)
LTC - 10s loop starting at 23:59:00:00
ELECTRICAL
Power: 6W
*Applicable to combinations of this card and ADX-1842/1852.