Grass valley 8914 DATASHEET

8914 Dual AES/EBU Digital Audio Delay Distribution Amplifier 9

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

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.

8900V-R

	J1	J2
AES 2	J3	J4
Outputs			AES 1
	J5	J6	Outputs
AES 2	J7	J8
Input
	J9	J10	AES 1
			Input
	Loopthru

	AES 1		Serial	Delay
		RX		AES 1
	Loopthrough		to
			Parallel	Outputs
			Serial	Delay
	AES 2			AES2
		RX	to
			Parallel	Outputs
	Delay
	Controls			FPGA

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

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

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