Digital Hybrid Wireless ® Technology; Lcd Screen; Diversity Reception; Infrared Sync - Lectrosonics D2 DSQD Instruction Manual

Digital Hybrid Wireless
All wireless links suffer from channel noise to some de-
gree, and all wireless microphone systems seek to mini-
mize the impact of that noise on the desired signal. Con-
ventional analog systems use compandors for enhanced
dynamic range, at the cost of subtle artifacts (known as
"pumping" and "breathing"). Wholly digital systems defeat
the noise by sending the audio information in digital form.
To support the installed base of Digital Hybrid Wireless
systems, the DSQD receiver includes DSP algorithms
for compatibility with Digital Hybrid Transmitters.
The DSQD receiver uses a DSP generated ultrasonic
pilot tone to reliably mute the audio when no RF carrier
is present. The pilot tone must be present in conjunc-
tion with a usable RF signal before the audio output
will be enabled. 256 pilot tone frequencies are used
across each 25.6 MHz block within the tuning range of
the system. This alleviates erroneous squelch activity in
multichannel systems where a pilot tone signal can ap-
pear in the wrong receiver via IM (intermodulation).

LCD Screen

Easy navigation of all setup parameters is provided by a
full color, backlit LCD screen and membrane push but-
tons. The high resolution display provides comprehen-
sive monitoring of all receiver parameters.

Diversity Reception

Three different receiver diversity schemes can be
employed depending on the needs of the application,
including antenna switching (during packet headers
for seamless audio), Digital Ratio Diversity, or Digital
Frequency Diversity.

Infrared Sync

The DSQD has a bi-directional IrDA interface which
allows quick syncing of settings and encryption keys to
transmitters with the push of a button. The receiver also
offers tuning groups to allow the user to set up a list of
frequencies, allowing for easy tracking of frequency tun-
ing in the transmitters.
Rio Rancho, NM
Technology
®

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
Digital Receiver
3