Chapter 6: DADman Software
31
Synchronization Combinations
The Dante node can operate as a clock master, synchronizing the Dante network, or be externally synchronized from the Dante network.
When the Sample Rate Converter (SRC) is not enabled, it means that the network and MTRX II have to be in sync, so when the Dante
network is the sync master, MTRX II must follow the network clock. In this scenario, the sample rate must be the same as the Dante
Stream and the MTRX II unit. If MTRX II is the master the unit, it provides the clock for the Dante network.
If SRC is enabled, there are two options with regard to functionality. The Dante Network and MTRX II are synchronized and running
on the same clock, but the sample frequency of audio on the Dante network is different from the sample rate on MTRX II: the Dante Net-
work and MTRX II are not synchronized and running on different clocks. The sample rate can be the same or different on the Dante net-
work and on MTRX II. However, in this case, the sample rate and the clock sync setting of the Dante card have to be done using the
Dante controller.
Synchronization
The Synchronization pane in the General sections lets you set the following MTRX II parameters: Source, Sampling (sample rate),
Adapt to, Word Clock Out, and Sync term (synchronization termination). The following table shows which settings are available.
Please note that DADman will only show the settings that are relevant in the given configuration.
Parameter Options Description
Sync Source Internal
Word clock
Video
MADI Coax
MADI Optical 1–2
Dante IP
This determines the clock source of the MTRX II
Sync Out Word clock
Word clock, base
This parameter sets whether the Word Clock output should only follow the base
sample rate (44.1 kHz / 48 kHz) or follow the actual sample rate (44.1k / 48k /
88.2k / 96k / 176.4k / 192k).
Sync term. High Z
75 ohm
This parameter sets whether the Word Clock input is terminated internally in the
MTRX II with 75 ohm, or left unterminated. It is strongly recommended that the
Word Clock input is terminated in 75 ohm for optimum performance.
Digi Dly (samples) Minimum, 3–31 Sets this internal processing delay. It is strongly recommend that this always be
set to “Minimum.” When set to “Minimum,” MTRX II automatically determines
best value. Setting it to any other value can result in loss of audio or other unde-
sired artifacts. However, in larger systems with multiple MTRX II (and MTRX)
units, you may want to set it to a higher value than “Minimum.” This is only the
case if mutliple MTRX II and/or MTRX units are interconnected using the
“HotLink” interface.
Sampling 44.1 kHz, 48 kHz
88.2 kHz, 96 kHz
176.4 kHz, 192 kHz
DSD 64 fs, DSD 128 fs
DXD, 384 kHz
This determines the sample rate of the MTRX II if the Adapt to setting is set to
Internal. If the Adapt to setting is set to any of the digital inputs, only the actual
sample rate will be shown.
Adapt to Internal
DigiLink 1–2
DigiLink Card (if installed)
MADI Coax
MADI Opt. 1–2
Dante IP
Thunderbolt (if installed)
The sample rate of the MTRX II can either be set manually by selecting Internal,
or it can follow any of the digital inputs. For example, if it is set to Pro Tools 1, the
sample rate will automatically follow the sample rate in your Pro Tools project.
The list of available Adapt to sources are sourced from the integrated digital
inputs; internal, Digilink 1-2, MADI Coax, or Dante IP. You can also adapt to any
digital option cards installed such as: DigiLink card, MADI Opt 1–2, MADI card,
AES card, Dante card, and so on.
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