Nevion DA-AA User Manual
DA-AA
Analog audio distribution amplifier
User manual
Rev. 6
P.O. Box 1020, 3204 Sandefjord, Norway – Tel: +47 33 48 99 99 – Fax: +47 33 48 99 98
Nevion Europe
www.nevion.com
DA-AA Rev. 6
Nevion Europe
P.O. Box 1020
3204 Sandefjord, Norway
Support phone 1: +47 33 48 99 97
Support phone 2: +47 90 60 99 99
Nevion USA
1600 Emerson Avenue
Oxnard, CA 93033, USA
Toll free North America: (866) 515-0811
Outside North America: +1 (805) 247-8560
E-mail: support@nevion.com
See http://www.nevion.com/support/ for service hours for customer support globally.
Rev.
Repl.
Date
Sign
Change description
6 5 2011-03-02
AA/AJM
New template.
Updated Materials declaration and Declaration of
Conformity.
Changed max input, added IMD and frq. response.
5 4 2008-01-31
Added Declaration of Conformity.
4 3 2007-10-26
New front page and removed old logo.
3 2 2007-10-05
Added Materials Declaration and EFUP
2 1 2005-07-29
Corrected description of connector module.
1 0 2004-11-10
Changed page 8, output settings
0 A 2004-05-25
Exchanged ANA1 and ANA2 on dip setting
A - 2003-10-21
Preliminary version
Nevion Support
Revision history
Current revision of this document is the uppermost in the table below.
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DA-AA Rev. 6
Contents
Revision history .......................................................................................................... 2
1 General .................................................................................................................... 4
2 Specifications .......................................................................................................... 5
3 Configuration setup ................................................................................................. 6
4 Output configuration ................................................................................................ 8
4.1 Configuration of ANA1 output ................................ .......................................................... 8
4.2 Configuration of ANA2 outputs ........................................................................................ 8
5 Connector module ................................................................................................. 10
5.1 Mounting the connector module. .....................................................................................11
6 Module status ........................................................................................................ 12
6.1 Front panel – status monitoring ......................................................................................12
7 Interface with GYDA and RS-422 command set .................................................... 13
7.1 DA-AA Command table ..................................................................................................13
General environmental requirements for Nevion equipment..................................... 14
Product Warranty ................................................................ ................................ ...... 15
Appendix A Materials declaration and recycling information..................................... 16
A.1 Materials declaration ................................................................ ......................................16
A.2 Recycling information .....................................................................................................16
EC Declaration of Conformity ................................................................................... 17
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DA-AA Rev. 6
1 General
The DA-AA is a dual 4 output analogue Audio Distributor. The DA-AA can be configured as
either a dual 1x4 or a single 1x8 amplifier. The latter configuration is made by connecting the
inputs in parallel or using DIP switch on PCB. The Distribution amplifier has differential inputs
and differential outputs. Overall gain can be set by DIP switches or by potentiometer for high
precision gain setting. The gain range setting is from -12 to +12 dB. The input signal can be
mixed to the other channel using a DIP switch. The Distribution Amplifier handles analogue
audio signals from 20Hz to 80 kHz. The DA-AA is designed for all audio distribution purposes
in studio, duplication and Broadcast applications.
Figure 1 - DA-AA analogue audio distribution amplifier
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DA-AA Rev. 6
2 Specifications
Electrical Input:
Number of inputs: 2
Connector: DB15 balanced
Impedance: > 10k ohms
Maximum Input Level: +28 dBu
Common mode rejection: >70dB
Electrical Output:
Number of outputs: 8
Connector: DB25 balanced (Tascam DA88)
Frequency response: 50 Hz - 20 kHz ±0.05dB
20 Hz - 20 kHz ±0.1dB
20 Hz - 80 kHz ±0.2dB
Crosstalk: -100 dB
THD+N: > 100dB ref to 20 Hz-20 kHz @ 20dBu
IMD: > 0.002%@18dBu
Impedance: 40 ohms nominal. Maximum 55 ohms
Maximum Output Level: +25 dBu
Output voltage balance ratio: >30dB
Output common mode rejection: >50dB
Switched gain tolerance: 0.1dB
Gain: -12 to +12 dB
Features
High quality audio distribution.
Configurable dual 1x4 or single 1x8 distribution amplifier.
Left/right swapping capability
Gain setting for professional and consumer equipment.
DIP switch gain compensation 10kohms / 600 ohms load
Precision gain adjustment
High common mode rejection on both inputs and outputs.
Inputs and outputs may be used with unbalanced equipment.
The input signal can be mixed to the other channel or vice versa.
Control Interfaces
Card edge LEDs for voltage monitoring, RS-422 with open protocol, SNMP Agent and WEB
interface with GYDA controller. Control system for access to setup and module status with
BITE (Built-In Test Equipment) for use with GYDA Control System
Electrical
Power: +5V / 0.1 W,
±15V / 1.9W
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DA-AA Rev. 6
3 Configuration setup
The DA-AA has two channels, ANA1 and ANA2. DIP switch 1 (ANA1) and 2 (ANA2) sets the
individual channel properties according to table:
Figure 2
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