Specifications Ordering Information
LEDs
Out 1
Out 2
Out 3
Out 4
Out 5
Out 6
Out 7
Out 8
T1
Input
Unbalanced
Balanced
Reclocker
Microprocessor
J1
J2
J3
J4
J5
J6
J7
J8
J9
J10
J11
J13
J12
J14
8900A-R
Pin 3
Pin 2
Pin 1
Pin 1
Pin 2
Pin 3
AES
Outputs
AES
Input
AES
Input
AES
Outputs
Not Used
Not Used
Not Used
Not Used
+
_
G
G
_
+
7
The 8912RDA brings balanced digital audio
distribution to the 8900 family of products.
This module complements the 8911 AES
reclocking DA by offering terminal-screw
connectors for those facilities requiring
balanced I/O. With built-in impedance
conversion, you can select either 75Ω or
110Ω inputs. In addition, we’ve added a
powerful remote monitoring capability to
enable you to keep track of all your conversion
and distribution assets using our NetCentral
SNMP-based remote monitoring software.
Key Features
75Ω AES3 or 110Ω AES3 input•
Eight 110Ω AES3 outputs•
Autodetect data rate and reclock sample•
rates from 32 kHz to 96 kHz
Lock indicator LED•
Remote monitoring via Ethernet•
Supported Frame Types
GeckoFlex with 8900A-R GeckoFlex Audio rear
module, Gecko Audio frames: 8900TX-A, 8900TF-A,
8900TFN-A
Power Rating
4 Watts – single slot
Input
Signal type: AES-3id-1992 or AES3 transformer
coupled
Number of inputs: One
Impedance: 75Ω, 110Ω, or High Z
Connectors: BNC or terminal block
Sample rate: 32 kHz to 96 kHz
Input return loss: (100 kHz to 10 MHz) >15 dB
balanced, >25 dB unbalanced
Balanced input common mode voltage range:
±10V 50 Hz to 20 kHz
Output
Signal type: AES3 AC coupled
Number of outputs: Eight
Impedance: 110Ω
Connectors: Terminal block
Sample rate: 32 to 96 kHz
Output return loss: >15 dB (100 kHz, 10 MHz)
Performance
Reclocking: Yes
DC offset: <±1 mV
Ability to lock jitter: .2 UI
Intrinsic jitter: 0.025 UI
Electrical length: 135 µs @ 48 kHz (or ~6.5X
sample rate period)
Other
User controls: Input impedance
Operating temperature: 0° to 45°C
Humidity range: 0% to 90% non-condensing
Non-operating temperature: –10° to 70°C
Remote – SNMP alarm
8912RDA AES Reclocking Digital Audio Distribution Amplifier
This module can be mounted in a GeckoFlex
frame when ordered with the 8900A-R GeckoFlex
Audio rear module.
8912RDA
AES reclocking digital audio distribution amplifier
8900-A-CBL (Gecko Frames only)
Package of four three-terminal to dual BNC cables,
used for unbalanced outputs on modules in a Gecko
frame
8900-GFA-CBL (GeckoFlex Frames only)
Package of four three-terminal to dual BNC cables,
used for unbalanced outputs on 8900A-R modules in a
GeckoFlex frame
For detailed specifications, installation, and setup
instructions see:
www.grassvalley.com/docs/modular
