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DW SY 1 & DW SY 2

Digi-Wave Intercom Bridge

USER MANUAL

Intercom Bridge

The Digi-Wave Intercom Bridge is a wireless add-on 

bundle offering a seamless expansion of an existing 2-wire 

intercom base system to include wireless, full-duplex Digi-

Wave DLT 300 transceivers from Williams Sound. It supports 

up to six simultaneous open microphones and an unlimited 

number of Digi-Wave devices in a given area. Range is up 

to 750 feet (228 meters), depending on the environment.

System Includes

•  (1) ADP 903 2 to 4 Wire Adapter
•  (1) BKT 032 Digi-Wave Transceiver Cradle
•  (1) TFP 058 Power Supply
•  (1) WCA 127 Interface Cable
•  (1) Tuning Screw Driver
•  (1) DLT 300 Digi-Wave Digital Transceiver 

(optional)

Any additional Digi-Wave devices or accessories are not 

included in this system.

Set Up

A two-way party line system is expected to already exist. 

The Digi-Wave system will be attached to the existing party 

line system via a 2-4 wire adapter.

Two DLTs will need to be configured: one as Master and 

one as Guest. 

The Master DLT will need to be set to Group 0, the sidetone 

set to 0, and given a unique address. The Guest DLT will 

need to be set to Group 0, and given an address different 

from the Master DLT. 
Please reference the user manual for the DLT for additional 

help configuring settings and using the menu system. 

Snap the BKT 032 bracket onto the top of the ADP 903 

Adapter. Insert the Master DLT into the slot on the bracket. 

Plug the WCA 127 cable into the Master DLT, and into the 

TFP 058 Power supply. Connect the power supply to a 

outlet.

The Guest DLT is not wired into the system, and is only 

used wirelessly. Any additional Digi-Wave devices can be 

used normally.
See Figure 1 for a map of the different devices and how 

they connect.

Nulling Procedure

You may experience sidetone echo in your headset. This 

echo is caused by a delay between the wireless systems 

transmitter and receiver. 

The nulling procedure will reduce or remove this echo from 

the audio stream.
Before starting the nulling process, connect a master DLT 

to the two-wire system. Also configure a Guest DLT to send 

and the receive Audio from the Master DLT , with the Guest 

DLT set to transmit mode (the TALK button is active). 
Please reference the user manual for the DLT for additional 

help configuring settings and using the menu system.

Guest DLT Setup

1.  Plug a headset into the headset jack.

2.  Plug a microphone into the microphone jack.

3.  Use the menu on the Guest DLT to set the sidetone 

level to 0 (off).

4.  Set the volume to level 63 (the maximum level).

5.  Push the TALK button. The red light will turn on.

6.  Speak or blow air into the microphone, while listening 

with the headphones to the sound. If you hear yourself 

or an echo (sidetone), you will need to adjust settings. 

Adjusting Settings

On the ADP 903 Wire Adapter, the back panel has three 

sections to adjust:

1.  In the 

Input from 4-wire system onto ring

 section, 

ensure the line/mic switch to Mic. The level is preset by 

Williams Sound at an optimum level and does not need 

adjustment. 

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