Digital Receiver
Rio Rancho, NM
3
Digital Hybrid Wireless
®
Technology
All wireless links suffer from channel noise to some degree,
and all wireless microphone systems seek to minimize the
impact of that noise on the desired signal. Conventional
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 conjunction
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 multichan-
nel systems where a pilot tone signal can appear 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 comprehensive
monitoring of all receiver parameters.
Diversity Reception
Three different receiver diversity schemes can be em-
ployed depending on the needs of the application,
including antenna switching (during packet headers for
seamless audio), Digital Vector Diversity or Digital Fre-
quency Diversity.
NOTE: Ratio Diversity instead of Vector Diversity
is available in earlier models, which is explained
on page 10.
Infrared Sync
The DSQD has a bi-directional IrDA interface which al-
lows quick syncing of settings and encryption keys to
transmitters (including legacy 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 tuning in the transmitters.
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 analog
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
