Grass valley 8925EMB-U DATASHEET

8925EMB-U SD/HD Unbalanced Audio Embedder 21

Key Features

•Eight-channel (four stream) SD/HD digital audio embedder (multiplexer)

•Four unbalanced AES inputs

•Accepts asynchronous PCM audio

•Supports Dolby E

•Three SD/HD SDI outputs with embedded audio

•Sample rate conversion accepts 32 kHz, 44.1 kHz, 48 kHz, or 96 kHz

•Embeds 20 or 24 bits

•Fiber-ready option for receiving or transmitting over fiber

Applications

•Embedding audio into an HD-SDI stream

•Embedding asynchronous PCM digital audio

•Embedding audio channels and sending an HD-SDI signal over fiber

•Suitable for use where existing embedded audio needs to be combined with incoming embedded audio

Specifications

Supported Frame Types

GeckoFlex with 8900NET (Net Card) for configuration

Power Rating

7.7 Watts – single slot

Video Inputs

SD/HD-SDI:

•Input equalization: HD up to 125m, SD up to 330m

•Auto-sensing: yes

Optical: Single-mode (optional)

Formats supported: 1080i @ 59.94, 50, 720p @ 59.94, 50, 480i @ 59.94, 576i @ 50, 1080p @ 23.98, 1080sF @ 23.98

Audio Inputs

AES: Four inputs

•Signal type – unbalanced:AES-3id-2001

•Common mode range: N/A

•Sampling rate: 32, 44.1, 48, or 96 kHz

•Resolution: 20or 24-bit

•Input return loss: > –25 dB (100 kHz to 12 MHz)

•Input impedance: 75Ω

•Connector type: BNC

Video Outputs

SD/HD-SDI: Four outputs

•Return loss: >15 dB, 5 to 270 MHz; >15 dB typical, to 1.5 GHz

The 8925EMB-U is a compact eight-channel SD/HD digital audio embedder (multiplexer) module. It provides three distributed SDI outputs with embedded audio and one output acting as an input reclocked loop-through. This module is ideal for building dense SD/HD and audio infrastructure for production and playout applications.

The module automatically detects the audio format, and Dolby E streams are also detected and passed transparently. The AES inputs can handle asynchronous audio and sampling rates from 32 kHz to 96 kHz, which are converted to synchronous 48 kHz embedded within the video stream.

With its fiber-ready architecture, the 8925EMB U can be configured to support up to two fiber inputs and two fiber outputs. With the fiber transmitter or transceiver option, it can take video from copper or fiber, embed audio, and transmit over fiber in one single slot. The receiver option makes it ideal for receiving incoming feeds from longer distances and locally embedding audio.

8900UVF-R

Audio	J1	J2	Audio
Input			Input
Audio	J3	J4	Audio
Input			Input
SD/HD	J5	J6	SD/HD
SDI Out			SDI Out
SD/HD	J7	J8	SD/HD
SDI Out
Reclocked			SDI Out
Output			Fiber In/Out
SD/HD	J9
			Connector
SDI In
		FIBER

All parameters can be adjusted via standard HTML Web browsers or via the Newton Control Panel. In addition NetConfig and NetCentral can be used for remote configuration and signal health monitoring.

SD/HD	Fiber RX		Option		Fiber TX	SD/HD
Optical In						Optical Out
		Option	Only one fiber	Option
	Fiber RX		option may be		Fiber TX
2X SD/HD						2X SD/HD
			selected
Optical In	Fiber RX				Fiber TX	Optical Out
						SD/HD
						Reclocked
		Equalizer and	Delay			SDI Out
SD/HD		Reclocker	Block
SDI In						3X SD/HD
			Bypass	MUX
4X		Sample Rate				SDI Out
AES		Converter
In
		Bypass

•Signal level: SDI 800 mVp-p ±10%

•Rise/fall time (20-80%): 140 ps typical for HD,

640 ps typical for SD

•Output jitter, low jitter applied:

<0.2 UI HD > 100 kHz

<1.0 UI HD 10 Hz > 100 kHz

<0.2 UI SD > 1 kHz

<0.2 UI SD 10 Hz > 1 kHz

Optical: Single-mode (optional)

Electrical Length (delay)

Minimum SDI Video Delay Mode:

HD input: <19 µs, SD input: <13 µs

Minimum SDI Audio/Video Offset Mode:

HD input: <84 µs, SD input: <525 µs

PCM Audio with SRC (at 48 kHz): HD input: 3.04 ms, SD input: 3.45 ms

Non-PCM audio or PCM with SRC off: HD input: 0.15 ms, SD input: 0.56 ms

Minimum Audio/Video Output Offset:

SD: 40 µs, HD: 62 µs

Embedding

Delete individual embedded audio group: Yes/no Embedded audio stream: Silence, any incoming group or any audio input

Output audio resolution: 20-, 24-bit, or auto as input

Ordering Information

This module can be mounted in a GeckoFlex frame but not in other 8900 series frames, including Gecko-A or Gecko-V frames. As this module has no card-edge controls, an 8900NET (Net Card) Network Interface card is required to configure this module.

8925EMB-U

SD/HD embedder, front and rear, four unbalanced audio inputs, front and rear module set

SFP-13103G-M1TRX

Fiber transceiver. Low-power 1310 nm single-mode optical transceiver

SFP-13103G-M1DTX

Dual fiber transmitter. Dual low-power 1310 nm singlemode optical transmitter

SFP-13103G-M1DRX

Dual fiber receiver. Dual low-power 1310 nm singlemode optical receiver

For detailed specifications, installation, and setup instructions see: www.grassvalley.com/docs/modular