Grass Valley Adder II - Manual (Page 6)

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Adder II System Overview
About the Adder II system
About the Adder II system
The Adder II is a high-performance link for transporting analog and digital audio, two and
four wire intercoms, and various data formats using lightweight fiber optic cable. As a
modular system, the Adder II is highly configurable and scalable for use as a point-to-point
signal transport.
The Adder II features include:
• Up to 64 bi-directional channels of audio
• Four intercom module slots providing up to eight intercom channels
• Data and GPI capabilities
• Remote audio gain control
• Phantom mic power
• Industry leading latency and signal-to-noise specifications
An Adder II system is constructed from single RU frames that interface to a common
backplane, allowing the system to be sized to various requirements. Analog and AES TX and
RX frames can be combined with Intercom and Data frames to create an audio system that
is perfectly suited to your particular application. Whether you need 32 x 32 analog or 32
analog to 16 AES signals in just one direction, with or without intercoms and data, Adder II
gives you maximum flexibility.
Analog modules come in rows of 16 while AES modules are in rows of 8 and 16. In this way,
an AES TX can interface to an analog RX, thus bypassing the need for expensive D-A and A-
D converters. With ultra-low latency, delay is never an issue.
Analog TX modules feature preamps that allow 0, 10, 20, 30, 40, and 50 dB of gain
adjustments plus 12/48V phantom power via a convenient faceplate controls and LED
display. The Adder II includes remote control of these functions. With an optical budget
exceeding 25 dB, the Adder II can operate across the theater or across town.
Operation can be on one or two fibers or two standard coaxial cables. It is dual-wavelength
and can be easily converted to WDM single-fiber operation. GPI's and data channels are on
DB-9 connectors with RS-232, RS-422, and RS-485 ports. A built-in signal analyzer features
an LED bar graph and signal generator with three different tone frequencies and three level
choices in both the analog and digital domains.
The Adder II ships pre-configured and requires minimal onsite configuration.