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8925EMB-U SD/HD Unbalanced Audio Embedder
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: 20- or 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.
SD/HD
Fiber RX
Optical In
Option
Fiber RX
2X SD/HD
Optical In
Fiber RX
Equalizer and
Reclocker
SD/HD
SDI In
4X
Sample Rate
Converter
AES
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
8900UVF-R
J1
J2
Audio
Input
J3
J4
Audio
Input
J5
J6
SD/HD
SDI Out
SD/HD
J7
J8
SDI Out
Reclocked
Output
J9
SD/HD
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.
Option
Fiber TX
Only one fiber
Option
option may be
Fiber TX
selected
Fiber TX
Delay
Block
Bypass
MUX
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 single-
mode optical transmitter
SFP-13103G-M1DRX
Dual fiber receiver. Dual low-power 1310 nm single-
mode optical receiver
For detailed specifications, installation, and setup
instructions see:
www.grassvalley.com/docs/modular
21
Audio
Input
Audio
Input
SD/HD
SDI Out
SD/HD
SDI Out
Fiber In/Out
Connector
SD/HD
Optical Out
2X SD/HD
Optical Out
SD/HD
Reclocked
SDI Out
3X SD/HD
SDI Out
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