Balanced
Input
Balanced
Outputs
Audio 1
Balanced
Monaural
Input
Audio 2
Balanced
Input
Monaural
Audio 1/
Monaural
Outputs
Audio 2/
Monaural
Outputs
Stereo
Selectable
Gain Amp Output Amps
Gain
Range >6 dB
Gain
Range >6 dB
Stepped Gain
6 dB per Step
Stepped Gain
6 dB per Step
-12
+
–
+
–
+30
-12 +30
Specifications Ordering Information
J1
J2
J3
J4
J5
J6
J7
J8
J9
J10
J11
J13
J12
J14
Pin 3
Pin 2
Pin 1
Pin 1
Pin 2
Pin 3
8900A-R
Analog
Audio 1
Outputs
Analog
Audio 1
Intput
Not Used
Not Used Not Used
Not Used
Analog
Audio 2
Intput
Analog
Audio 2
Outputs
+
_
G
G
_
+
5
Key Features
Stereo or monaural modes•
Frequency response of 20 Hz to 20 kHz•
±0.05 dB
Independent local gain control for each•
channel
Gain range from –15 dB to +33 dB•
Max. output level +24 dBu•
AC coupled input, eliminates DC•
component
Remote monitoring via Ethernet•
The 8910ADA-ST offers cost-effective
distribution of monaural or stereo analog audio
throughout your facility. In stereo mode there
are four pairs of outputs, and in monaural
mode there are eight outputs. Featuring flat
frequency response to maintain your signal
integrity, the 8910ADA-ST offers a wide range
of gain controls using a combination of board
jumpers and local gain adjustment from the
front of the module. Channel 1 and 2 gains
are controlled separately so you can use this
board as a dual 1x4 analog audio distribution
amplifier. Additionally, you can easily monitor
the condition of the module with our popular
Ethernet interface, which provides a convenient
Web interface, Newton control system, and
SNMP monitoring.
Supported Frame Types
GeckoFlex with 8900A-R GeckoFlex Audio rear
module, Gecko audio frames: 8900TX-A, 8900TF-A,
8900TFN-A
Power Rating
2.2 Watts – single slot
Input
Impedance: >24 kΩ
Level: +30 dBu max.
CMRR: >72 dB, 60 Hz to 20 kHz
Output
Number of outputs: Four stereo outputs, eight mono
Impedance: <50Ω balanced
Level: ≤+24 dBu max.
Level match between outputs: ≤±0.25 dB
Output to output isolation: >100 dB
Drive capability: 600Ω minimum load impedance
Performance
Frequency response: ±0.05 dB, 20 Hz to 20 kHz
THD: <0.01% @ +24 dBu
IM distortion: <0.005%
Noise: –86 dBu max.
Gain range: –15 to +33 dB
Other
User controls: Input gain, >6 dB range each channel
Gain jumpers: –12 to +30 dB gain in 8, 6 dB steps
Operating temperature: 0° to 45°C
Humidity range: 0% to 90% non-condensing
Non-operating temperature: –10° to 70°C
Remote – SNMP alarms
8910ADA-ST Stereo Analog Audio Distribution Amplifier
This module can be mounted in a GeckoFlex
frame when ordered with the 8900A-R GeckoFlex
Audio rear module.
8910ADA-ST
Stereo analog 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
