Introduction; Encryption; What Is Dante - Lectrosonics M2T-X Series Instruction Manual

M2T-X

Introduction

The M2T Digital Half-Rack Transmitter with analog and
digital Dante™ (optional) network audio inputs presents
an excellent sounding IEM system with a unique level of
performance in a wireless in-ear monitor system. With
ultra-low latency, digital RF modulation and two stereo
digital channels, the M2T provides a truly unique IEM
product for demanding, professional applications.
The M2T boasts a USB port for firmware updates and
an IR port for fast setup. A large, high resolution, backlit
LCD and large membrane switches provide an intui-
tive interface that is highly visible in daylight or dimly lit
conditions.
The half-rack transmitter provides four audio inputs
which can be individually configured to be analog or
Dante compatible. The input connectors are full size
XLR/TRS combo types for balanced line level analog
signals. Input preamp circuits use a special balanced
amplifier with very high common mode rejection to
minimize hum and noise. Analog signals are converted
to an internal digital format which is then encoded,
encrypted, organized into packets, and passed to an RF
modulator. The modulated RF signal is filtered before
and after amplification to suppress out-of-band noise
and spurious signals.
Conventional in-ear wireless monitor systems rely on
decades-old technology: FM transmission with multi-
plexed, companded audio. The M2T Transmitter em-
ploys unique technology to provide ruler-flat frequency
response from 20 Hz to 15 kHz and maximum channel
separation. In addition, the digital audio eliminates a
compandor and the associated artifacts. The result is
crystal clear sound and extremely low distortion
of <0.15%.
The M2T is designed and developed with the profes-
sional touring, installation, theater and broadcast
customers in mind. The transmitter chassis is all-metal.
The front panel is an aluminum extrusion with a durable
powder coat finish.

Encryption

The special firmware version M2T-X provides AES
256 bit encryption. When transmitting audio, there are
situations where privacy is essential, such as during
professional sporting events, in court rooms or private
meetings. For instances where your audio transmis-
sion needs to be kept secure, without sacrificing audio
quality, Lectrosonics introduces Encryption Keys. Truly
entropic encryption keys are first created by the M2T-X
Transmitter. The key is then synced with an encryption
capable receiver via the IR port. The audio will be en-
crypted and can only be decoded and heard if both the
transmitter and the receiver have a the matching key.
4

What is Dante?

Audinate's patent pending Dante™ technology is a
flexible Internet Protocol (IP) and Ethernet based digital
AV network technology that eliminates the many bulky
cables needed to provide point-to-point wiring for ana-
log AV installations.
With Dante, existing infrastructure can be used for high
performance audio as well as for ordinary control, moni-
toring or business data traffic. Digital networks utilize
standard IP over Ethernet offering high bandwidth ca-
pable of transporting hundreds of high quality channels
over Gigabit Ethernet.
Set-up and configuring the system is made easy as
well, saving enormous installation costs and long term
cost of ownership on a digital network. The physical
connecting point is irrelevant: audio signals can be
made available anywhere and everywhere. Patching
and routing now become logical functions configured in
software, not via physical wired links
Summary of Dante Benefits
• Plug-and-play technology – automatic discovery
and simple signal routing
• Reduced Cost & Complexity- No special skills
required to set up audio networking
• Sample accurate playback synchronization
• Add/remove/rearrange components at will
• Deterministic latency throughout the network
• Support mixed bit depths and mixed sample rates
over one network
• Scalable, flexible network topology supporting a
large number of senders and receivers
• Supports 1Gbps networks
• Supports a single integrated network for audio,
video, control, monitoring
• Uses inexpensive, off-the-shelf computer
networking equipment
LECTROSONICS, INC.