GRASS VALLEY 8920ADC Datasheet

Key Features

• 24-bit resolution
• Wide range of output modes (swap, invert,
sum, tones)
• AES/EBU loopthrough reference input
• 48 kHz sampling rate
• Terminal block input via adapter for
balanced analog audio input
• Independent input level control from
+12 dBu to +28 dBu
• Remote control via Ethernet frame I/F
Specifications
Supported Frame Types
GeckoFlex with 8900V-R GeckoFlex Video rear module,
Gecko video frames: 8900TX-V, 8900TF-V, 8900TFN-V
Power Rating
4.2 Watts – single slot
Analog Input Signal
Number of inputs: Single stereo pair
Connector type: Terminal block 8900CTB-04
Input impedance: >10 kΩ
Input level: +12 to +28 dBu
Sampling rate: 48 kHz
AES Reference Input
Signal type: AES-3id transformer coupled (does not
support word clock or video)
Number of inputs: One loop-through
Input return loss: >15 dB (100 kHz to 10 MHz)
Maximum jitter: <200 ps RMS
8920ADC Audio A-to-D Converter
The 8920ADC converts analog audio to digital
audio. Its various modes allow you to modify
the outgoing signal such as channel swapping,
channel summing, phase inversion, and more.
The remote capability supports mode selection
and input gain control.
8900CTB-04
connects here
for balanced
analog inputs
+
Filter
Analog 1
+
Filter
Analog 2
(using the supplied balanced 8900CTB-04 audio adapter)
Mode
Controls
Output
Number of outputs: Four
Signal type: AES-3id-1992
Connector type: 75Ω BNC
Performance
Sampling rate: 48 kHz
Signal/noise ratio: >102 dB unweighted, >105 dB
"A" weighted
Frequency response: ±0.05 dB 20 Hz to 20 kHz
Interchannel crosstalk: <–100 dB, 20 Hz to 20 kHz
Operating temperature: 0° to 45°C
Humidity range: 0% to 90% non-condensing
Indicators and Controls
Indicators: Input present, ref. present, power, clipping,
fault, communication active
Controls: Operation modes (normal, channel swap,
phase invert, channel sum, tone), input gain
Remote: All controls and indicators via Ethernet
8900V-R
J1 J2
Left
Analog
Input
J3 J4
J5 J6
AES/EBU
Outputs
J7 J8
J9 J10
Loopthru
24-bit
AES
FPGA
Stereo
TX
ADC
Controller
LEDs
Remote
Ordering Information
This module can be mounted in a GeckoFlex
frame when ordered with the 8900V-R GeckoFlex
Video rear module.
8920ADC
Audio A-to-D converter supplied with one 8900CTB-04
adapter
For detailed specifications, installation, and setup
instructions see:
www.grassvalley.com/docs/modular
11
Right
Analog
Input
AES/EBU
Outputs
AES Reference
AES/EBU