GeckoFlex 8925DMB-B HD/SD Balanced Audio De-Embedder

The 8925DMB-B is a compact HD/SD digital audio de-embedder (audio demultiplexer) module. It provides four balanced AES outputs and supports both PCM audio and Dolby E. This module is ideal for building dense audio/video infrastructure for production and playout applications. The 8925DMB-B provides four HD/SD-SDI outputs, one of which is a direct re-clocked feed of the input. The four AES outputs are synchronous to the video. Output PCM audio sample resolution can be forced to 20 or 24 bits.

With its fiber-ready architecture, the 8925DMB-B can be configured to support up to two fiber inputs or up to two fiber outputs. Configured as a fiber transceiver it can take SDI from fiber, de-embed audio, and provide SDI output over fiber and discrete AES outputs. The dual-receiver option makes it ideal for receiving incoming feeds from longer distances with fiber input selection, and locally de-embedding audio for providing audio and SDI over copper.

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

Where to Buy

Eight-channel HD/SD audio de-embedder (demultiplexer) with AES outputs
Any embedded audio stream can be passed and distributed to any discrete output
Choice of four balanced AES outputs
Four HD-SDI/SDI outputs (one active loop-through)
Support 48 kHz audio sample rate and 20-bit or 24-bit audio sample resolution
Handles Dolby E
Fiber-ready option for receiving or transmitting over fiber
Remote control and monitoring via Ethernet frame interface

Supported Frame Types
GeckoFlex with 8900NET (Net Card) for configuration

Power Rating
7.4 Watts – single slot

Video Inputs
HD/SD-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 Outputs
AES: Four outputs

Signal type – balanced: AES-3id-1992
Common mode range: 10 Vp-p DC 20 kHz
Sampling rate: 48 kHz
Resolution: 20- or 24-bit
Output return loss: >15 dB (100 kHz to 12 MHz)
Input impedance – balanced: 110Ω
Connector type – balanced: mini-screw terminal block

Video Outputs
HD/SD-SDI: Four outputs

Return loss: >15 dB, 5 to 270 MHz; >15 dB typical, to 1.5 GHz
Signal level: SDI 800 mV/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)
SDI: HD input <400 ns, SD input <1.2 µs
AES (@48 kHz): HD input 410 ns, SD input 0.83 s

De-embedding
Output audio stream: Silence or any embedded pair
Output audio resolution: 20-, 24-bit, or auto as input

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		GeckoFlex 8925DMB-B HD/SD Balanced Audio De-Embedder Data Sheet Posted Nov 17 2010 (MOD-4017M-5 8925DMB-B) File Size: 225.3 KB Read more »

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