System Overview; Dlr 400 Alk Differences - Williams Sound Digi-Wave DLT 400 User Manual

Digi-Wave 400 Series

System Overview

The Digi-Wave communication system allows users to listen and talk to one another wirelessly in a variety of scenarios. A Digi-
Wave system consists of at least one transceiver (DLT 400) and various combinations of transceivers and receivers (DLR 400).
The DLT 400 is a two-way transceiver, meaning that it can transmit and receive audio simultaneously.
The DLR 400 is a receiver only. Users of DLR 400 receivers can only hear what is being broadcast by DLT(s); they cannot create
any audio. There are two models of DLR: the DLR 400 ALK and the DLR 400 RCH. For information on the differences, see "DLR
400 ALK Differences" on page 4.
For simplicity, throughout the rest of this manual, the DLT 400 may be referred to as a "DLT." The DLR 400 RCH and DLR 400
ALK as a "DLR" when the behavior of both devices is the same.
Combinations of one or more DLT's and DLR's can be used to facilitate different events, depending on what needs to be spoken
and what needs to be heard. Examples of scenarios will be covered here.
Typical Scenarios include:
• Guided Tours - with one or more tour guides (2-way), with audience participation (2-way), or without audience participation
(1-way)
• Language Interpretation - one or more interpreted languages transmitted to audience (1-way)
• Intercom - with up to six people able to speak simultaneously (2-way)
There are many more scenarios than are covered in this manual, however these would be variations on the ones discussed
here.
Backwards Compatibility
The Digi-Wave 400 Series is backward compatible with the 300 series with limited features.
It is not backward compatible with any earlier transceivers or receivers (DLT 100, DLT 100 2.0, DLR 50, DLR 60, and DLR 60 2.0).
The Technology
The Digi-Wave™ system is a digital spread-spectrum (DSS), simultaneous two-way wireless listening system operating in the
2.4 GHz band. Due to it's frequency-hopping algorithm, it avoids interference and is a very secure method of communication.
For a more detailed explanation of how Digi-Wave technology works, please visit our website and download the "Digi-Wave™
Technology White Paper".

DLR 400 ALK Differences

4
The DLR 400 ALK uses 2 AAA alkaline batteries rather than a rechargeable battery like
the DLR 400 RCH.
The AAA alkaline batteries can be inserted by removing the panel on the back of the
device and putting the batteries in place with the correct polarity. When changing
batteries, always change both batteries at the same time.
Help Williams AV protect the environment! Please recycle batteries once they are drained.
Other Differences
The DLR 400 ALK allows you to select a group via the up and down arrows on the front of
the device. The volume may be adjusted using the vol buttons. There is no menu system
otherwise.
The battery and signal strength indicators on the screen work similarly to the DLR 400
RCH, but are located on the far left of the screen.
When discussing DLR Receivers, this manual is usually referring to the DLR 400 RCH.