Chapter 1: Introduction
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Pro Tools | MTRX lets you install optional I/O expansion cards in any of the eight back panel slots that include:
• Up to 48 analog channels depending on the configuration of installed Analog I/O Expansion Cards (up to 6 cards):
• Pro Tools | MTRX 8 Line Pristine AD Card provides eight channels of line-level analog inputs.
• Pro Tools | MTRX 2 Mic/Line Pristine AD Card provides two channels of analog inputs and mic preamps with relay-based gain
circuit—an ideal low-cost option for talk-back and tracking—includes microphone preamplifiers with relay-based gain circuits.
• Pro Tools | MTRX 8 Mic/Line Pristine AD Card provides eight channels of analog inputs and mic preamps with relay-based gain
circuits.
• Pro Tools | MTRX Pristine 8 DA Card provides eight channels of line-level analog outputs with an output level control.
• Digital I/O Expansion Cards (up to 6 cards):
• Pro Tools | MTRX 8 AES3 I/O Card provides eight line AES3 inputs and outputs (16 channels) with built-in sample rate conver-
sion.
• Pro Tools | MTRX Dual SDI/HD/3G Card provides 2 x 16 channels of SDI/HD/3G connections with built-in sample rate conver-
sion.
• Pro Tools | MTRX Dual MADI I/O Card provides up to 128 channels of MADI inputs and outputs through two optical SFP ports,
and also provides SRC on input.
• Pro Tools | MTRX MADI mini-module for the Base Unit provides additional one or two 64-channel I/O coaxial or optical MADI
module to the chassis.
• Pro Tools | MTRX Dante 128 Card provides up to 128 channels of high-density, low-latency digital audio using Dante (128 chan-
nels at 44.1 kHz or 32 channels at 192 kHz), and also provides Sample Rate Conversion (SRC).
• Pro Tools | MTRX 64-Channel IP Audio Dante module can be installed on the motherboard and provides up to 64 channels of
low-latency digital audio using Dante (64 channels at 44.1 kHz or 16 channels at 192 kHz).
• DigiLink Expansion Card:
• Pro Tools | MTRX DigiLink Card provides 2 DigiLink ports to connect to HDX cards, HD Native, or additional audio interfaces
(such as HD MADI I/O) for up to 64 channels of DigiLink I/O per card.
• DSP/FPGA Card:
• Pro Tools | MTRX SPQ Speaker Processor Card provides monitor control, speaker matching, delay controls, and comprehensive
EQ and bass management in all output formats. It supports up to 128 channels at 48 kHz with up to 16 EQ filters per channel.
Clock and Synchronization System
The MTRX clock system supports various internal and external clock modes. MTRX has a precise and very high quality internal sample
clock generator, which can also be clocked from an external clock signal by means of a very accurate Digital Phase Locked Loop
(DPLL) system.
The MTRX clock system has to be set to the correct sample rate with which the units should operate. This is the case both when oper-
ating with the internal sample clock generator as master clock, or when synchronized to an external clock source. The sample rates sup-
ported are based on either 44.1 or 48 kHz sampling. An external clock must always have a correct base rate in relation to the sample rate
used.
The sample rate with which the MTRX should operate can be set manually using DADman software or using the controls on the front
panel. You can also set the sample rate from Pro Tools. When using the IP Audio interface powered by Dante, the sample rate of the
Dante I/O node to the IP Audio network can be set to follow the sample rate of the MTRX. When multiple MTRX units are operating
in the same set up or IP Audio network, they must all be set to the same sample rate.
MTRX is compliant with the Dante Controller and Dante Virtual Sound Card, and also supports Dante Domain Manager.
For information on how to configure the synchronization and sample rates, see