Grass Valley ADA-1023 - Manual

ADA-1023 Single/Dual Analog Audio Distribution Amplifier
Guide to Installation and Operation
M451-9600-101
(DENSITÉ) SERIES March 2008
ADA-1023 Page 1 of 4
ADA-1023
Description
The ADA-1023 is an analog audio DA that can be
configured for single or dual channel (stereo)
operation. In single channel mode, 8 outputs can
be driven while in dual channel mode, each
channel has four outputs. A wide range of level
gain control is possible and controlled from the
card edge. A signal status is also available
indicating the presence of the input signal(s).
The ADA-1023 requires a ‘double' rear connector
panel.
Features
• Single or dual analog audio input(s)
• Single channel 8-output or dual channel
(stereo) 4-output
• Balanced inputs and outputs
• Wide control of gain (-8 to +32 dB)
• Status LED and remote reporting of
presence and overload.
• Provides output to Monitoring Switching
Bridge option (MSB-1121)
FUNCTIONAL BLOCK DIAGRAM
Inputs
AUDIO
ADA-1023 Block Diagramm
Outputs
AUDIO
1
2
3
4
5
6
7
8
1
2
Rem Control
Select
Status
Amp
Amp
To Monitor
Microcontroller
SPECIFICATIONS
Input
Balanced
Signal: .......................analog audio
Impedance: ..............> 20 k
Ω
Common mode
rejection: ..................> 50 dB
Output
Balanced
Signal: ......................balanced analog audio
Impedance: ..............< 50
Ω
Processing performance
Gain: ........................ -8 to +32 dB
Max. Level: ............... +25 dBu
SNR: ........................ < -95 dBu
20 Hz to 20 kHz unweighted
Distortion: ................ < -85 dB (20 Hz to 20 kHz) @ +23
dBu
Freq. response: ........ ±0.2 dB (20 Hz to 20 kHz)
Crosstalk:.................. 100 dB
Miscellaneous
Overload threshold: . +9 to +24 dBu (1 dB steps)
Signal absence:
-Fixed threshold: ..... -48 to -24 dBu (6 dB steps)
-Adjust. Delay: ........ from 0 to 255 s
Power: ...................... 7 W