AMX-1842
HD/SD 4 AES Embedder
The AMX-1842 is a high-quality embedder which embeds up to four AES 24-bit 48 kHz 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.
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
- 110Ω balanced or 75Ω 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 ST 292/SMPTE ST 259-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 ST 276)
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 ST 12
Impedance: <10 kΩ (bridging 600Ω) unbalanced
Level: 0.2 to 5 Vp-p
Video Output
Video signal:
- HD/SD-SDI (SMPTE ST 292/SMPTE ST 259-C)
- Audio embedded per SMPTE ST 299/SMPTE ST 272
- LTC embedded as ATC/DVITC (SMPTE RP 188/SMPTE ST 266)
- RS-422 and two GPIs embedded as ANC data per SMPTE ST 291 (Proprietary type 1 DID)
Return loss: >15 dB up to 1.485 GHz
Wideband jitter: as per SMPTE ST 259-C and SMPTE ST 292
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.
MEDIA GALLERY
ORDERING INFORMATION
| Densité 2 frame | Densité 3 frame | Description |
| AMX-1842 | AMX-1842-3RU | HD/SD 4 AES Embedder |
| AMX-1842-75-DRP | AMX-1842-75-DRP-3RU | Double rear connector panel, 75Ω |
| AMX-1842-110-DRP | AMX-1842-110-DRP-3RU | Double rear connector panel, 110Ω |
| Remote control | GV Orbit, iControl, iControl Solo | |
