Rational Acoustics Smaart I-O User Manual - Overview
Overview
T
he Smaart I-O is a 2-in, 2-out, mic preamp and USB audio interface
device designed specifically for professional audio measurement
applications. It is designed to accommodate signal levels common in
professional audio systems, to integrate seamlessly with Smaart
acoustic measurement and analysis software and to be solid, simple
and easy to use. The Smaart I-O features balanced differential inputs
and outputs, low-noise programmable gain microphone preamps with
50 dB of gain in 1 dB steps, an extremely stable and robust 48V phan-
tom power supply and precision referenced ADAC to ensure consistent
electrical sensitivity, linkable sample clock and external powering
options, all packed into a compact package with no external controls.
A simple control program (included on the supplied CD ROM) sets
preamp gains and phantom power selection, and automatically
integrates with Smaart measurement and analysis software. The
control program also provides firmware update capability and can
rename the Smaart I-O at the hardware level – an important feature
when using multiple devices with Smaart.
The Smaart I-O by Numbers
Front Panel
USB
Ch.1
Ch.2
Clip
Clip
Signal
Signal
Phantom
Phantom
2x2 USB Audio Interface
1. Signal presence indicators illuminate when the input signal level
exceeds about -27 dB FS.
2. Clip indicators light up when input signal levels exceed -6 dB FS.
3. USB indicator glows blue when connected to your computer, purple
to indicate external clocking, or flashes red if unable to connect.
4. Phantom power LEDs light when 48 V phantom power is turned on.