Chapter 4: Pro Tools | MTRX II Front and Back Panels
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1 Main power supply.
2 Reconfig button. For more information, see Recovery Mode.
3 RJ45 Ethernet ports 1 and 2 for Control and Dante Audio IP. Connectors can be set in switched or redundant mode for Dante. In re-
dundant mode the control network must be connected to port 1.
4 Mini-module slot for optional dual MADI I/O mini module optical or coaxial SFP modules.
5 Slot for optional 256 channel (2 ports, 256 channel with either port) Thunderbolt 3 module.
6 Word Clock or Video Black Burst synchronization input (configurable), BNC connector, and Word Clock output.
7 MADI I/O BNC connectors.
8 DigiLink Mini port 1 and 2 for Pro Tools | HDX or HD Native, or another I/O.
9 Analog and digital I/O expansion cards are installed into slots along the back of the unit in card slots 1–8 (right to left). All eight slots
can be can be used at once in any combination or order.
Digital I/O Connections
MTRX II Dual MADI I/O Expansion Card
The MTRX II Dual MADI I/O expansion card can be installed with one or two “Small form-factor pluggable” (SFP) transceiver mod-
ules. The SFP modules are standard types which support coaxial as well as optical and interfaces with LED or Laser diodes, and various
wavelengths and fiber types. Each SFP module has a receiver and a transmitter part, and can be used for MADI audio I/O. The right part
of the SFP connector is the receiver and the left part is the transmitter. Note that only optical MADI connections support MTRX II Ho-
tlink functionality.
Ethernet, RJ45 Connector, Gigabit
Pin 1
BI_DA+
Pin 2
BI_DA–
Pin 3
BI_DB+
Pin 4
BI_DC+
Pin 5
BI_DC–
Pin 6
BI_DB–
Pin 7
BI_DD+
Pin 8
BI_DD–
For information on installing expansion cards, see Installing MTRX Option Cards.
Optical wavelengths of 850nm and 1300nm are commonly used for multi-mode MADI cards. 1300nm uses 100BASE-FX cable and
allows for cable runs as far as 6,600 feet. 850nm is a lower cost alternative that uses 100BASE-SX cable, due to the use of short wave-
length optics (which are significantly less expensive than the long wavelength options used in 100BASE-FX), with maximum cable
runs up to approximately 1,000 feet.
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