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AMX-1842 HD/SD 4 AES Embedder

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.

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 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.

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, 75 ohm
AMX-1842-110-DRP AMX-1842-110-DRP-3RU Double rear connector panel, 110 ohm
 
Remote control iControl, iControl Solo, RCP-200

DOCUMENTS & DOWNLOADS

DATASHEETS

AMX-1842: HD/SD 4 AES Embedder Datasheet

The AMX-1842 from Grass Valley, a Belden Brand, 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

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