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Power Supplies
The A640 Personal Mixer is designed to be connected to an Aviom A-Net Distributor such as the D800
or D400 when creating a personal mixing system. A-Net Distributors provide parallel A-Net digital
audio data connections for up to eight Personal Mixers as well as the DC power required to operate
them.
The A640 can also be powered with an optional DC power supply, the PS-120, which is a universal
switching type supply capable of working with voltages from 90 to 240 volts AC. The external power
supply is also available in international versions, sold as the PS-240.
Should you need to add or replace a power supply, we recommend using only a power supply that
meets the following specifications.
Type
Input Voltage
Output
Polarity
Plug Size
Note that the polarity of the plug found on the DC power supply needs to match that of the power
supply specified to work with your Aviom equipment. Aviom products use a center positive power
supply. The outer contact of the 2mm plug is negative, the inner contact is positive.
About A-Net
A-Net® is a proprietary high-speed data transmission protocol developed by Aviom, capable of
sending and receiving high-quality digital audio using readily available Cat-5 cables.
A-Net is based on the physical layer of Ethernet, a Local Area Network (or LAN) technology. This
provides A-Net with a mature and robust base on which to build. However, it is important to note
that A-Net devices are not compatible with Ethernet devices.
Some of the benefits of using A-Net to transmit digital audio are:
• Virtually no latency; analog in to analog out is always less than one millisecond
• No ground loops
• Easy cabling using readily available components
• An unlimited number of A-Net devices can be used in a system
• Ease in spanning long distances between system components
There are two versions of Pro16 A-Net: the original Pro16 A-Net signal carries sixteen channels of
digital data while the enhanced Pro16e® version of A-Net is capable of carrying up to 64 channels of
digital audio data. Like standard Pro16 A-Net, Pro16e is a point-to-point digital audio protocol.
Aviom A640 Personal Mixer User Guide
Switching
90-240 volts
24Vdc
Outer = negative; Inner = positive
2 mm
50/60Hz 30VA
0.5A
Page 7
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