GRASS VALLEY 8914 Datasheet

8914 Dual AES/EBU Digital Audio Delay Distribution Amplifier

Key Features

• Two full-function digital delays on a single
board
• Up to 0.5 second delay in 2 ms increments
per channel
• Four outputs on channel 1, three outputs
on channel 2
• Up to 20 AES/EBU delays in a 2 RU 8900-V
frame
• Accepts 32, 44.1, and 48 kHz audio signals
Note: for balanced 110Ω requirements see
the 8912 series digital audio distribution
amplifiers
Specifications
Supported Frame Types
GeckoFlex with 8900V-R GeckoFlex Video rear module,
Gecko video frames: 8900TX-V, 8900TF-V
Power Rating
3.5 Watts – single slot
Input
Number of inputs:
• Channel 1: one loopthrough
• Channel 2: one terminated
Connectors: 75Ω BNC
Standard: AES-3id-1995 and SMPTE 276M
AES frame rates: 32, 44.1, or 48 kHz
Return loss: >25 dB (0.1 to 6 MHz)
Outputs
Number of outputs:
• Channel 1: four
• Channel 2: three
Connectors: 75Ω BNC
Standard: AES-3id-1995 and SMPTE 276M
Return loss: >25 dB (0.1 to 6 MHz)
Intrinsic jitter: <6 ns
As the transition to digital video and audio
accelerates, there is an increased need to
delay the audio associated with broadcast
video due to the relatively large processing
times associated with DVEs and video
production switchers. The 8914 provides a
low-cost and easy-to-use solution to the lip
sync errors associated with these large delays.
We've included two fully controllable delay
paths on a single board allowing up to 20
digital audio delays and distribution in a 2 RU
frame. If you want more distribution instead,
the first channel can be passively looped to the
second channel for seven outputs. The 8914
is also a full-featured reclocking distribution
amplifier.
AES 1
RX
Loopthrough
AES 2
RX
Delay
Controls
Performance
Sample rates: 32, 44.1, or 48 kHz
Delayed outputs:
• Minimum: 1.2 ms
• Maximum: 510 ms (127.5 AES blocks)
Delay increments: One AES block (2 ms)
Indicators and Controls
Indicators: Input video present, input data rate, power
Controls: Delay – two 16-position rotary switches
8900V-R
J1
J3
AES 2
Outputs
J5
J7
AES 2
Input
J9
Loopthru
Delay
Serial
to
Parallel
Delay
Serial
to
Parallel
FPGA
Ordering Information
This module can be mounted in a GeckoFlex
frame when ordered with the 8900V-R GeckoFlex
Video rear module.
8914
Dual AES/EBU digital audio delay distribution amplifier
For detailed specifications, installation, and setup
instructions see:
www.grassvalley.com/docs/modular
9
J2
J4
AES 1
Outputs
J6
J8
J10
AES 1
Input
AES 1
Outputs
AES2
Outputs