Extron Electronics MVC 121 Plus User Guide - Manual (Page 22)

DSP Processing and Signal Flow
The diagram below shows the input signal flow and DSP processing per signal chain.
Signal chains and mix-points are described in the following sections.
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All signal routing, processing, and level control (gain/volume), are accomplished using
software control from a PC connected to the MVC 121 Plus via the USB configuration port
or the RS-232 port. The DSP Configurator program provides complete control while the
SIS commands provide more limited control.
This section describes the signal processing including parameter ranges, and how to
mix inputs and outputs using the DSP Configurator control program. To install the DSP
Configurator program, see the
Software Control section.
Mic/Line Input Signal Chain
Input signal chain GUI elements from left to right are as follows:
Mic/line inputs 1 and 2
• Gain (GAIN) — Mono gain control with a range from -18 to +60 dB includes a mute
button. Step resolution is 0.1 dB. A polarity switch (+ or -) is provided. Gain control is
provided pre-meter and mute control is provided pre-meter.
MVC 121 Plus • Operation 16