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Analog Inputs

Picture
Fibox FBAI-M
Two Channel Analog Master Input Module

Download Specs


In one compact unit, the FBAI-M incorporates a two-channel preamplifier, 20-bit delta-sigma A/D converters, a digital multiplexer, and a fiber optic transmitter.   The FBAI-M accepts either microphone-level or line-level signals on balanced XLR inputs.  The microphone preamplifier offers performance comparable to the finest studio mixing consoles, making the FBAI-M idea for extremely demanding applications such as direct-to-digital remote recording of classical music.  Phantom powering (48V) is provided for condenser microphones, selectable on/off with a front panel switch.

Also on the front panel, each channel of the FBAI-M is provided with a Mic/Line input selector switch, a continuosly variable gain control (4 to 70dB boost in "Mic" position only), and "peak" LED to indicate input overload.  A rear panel input polarity ("phase") reversal switch is provided for channel 1.

Output of the FBAI-M is standard 1310nm wavelength on 62.5/12µ multimode fiber with conventional ST connectors, assuring ease of use and fast setup in the field or on the sound stage.  A DB-15 multipin connector is provided to link the FBAI-M with up to five additional FBAI-SL slave units using the LKI-6 linking cable.

Fibox FBAI-SL
Two-Channel Analog Slave Input Module

The FBAI-SL is identical to the FBAI-M except it does not contain circuitry or connectors for fiber optic transmission.  Instead, the digital audio output of the FBAI-SL is fed through a linking cable to an FBAI-M master unit.  A single FBAI-M master can accept, synchronize, and multiplex audio signals for up to five additional slaves, thus providing 12-channel capability on a single fiber 
link.

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