Table Of Contents; Introduction; Frequency Agility; Encryption - Lectronics DBu Instruction Manual

DBu, DBu/E01

Table of Contents

Introduction............................................................................2
Frequency Agility ............................................................... 2
Encryption .......................................................................... 2
DSP-controlled Input Limiter ............................................. 2
DBu-LEMO Block Diagram ................................................ 3
Battery Installation ............................................................... 4
Battery Status LED Indicator ............................................. 4
Belt Clips ............................................................................ 5
IR (infrared) Port ................................................................. 5
Audio Input ......................................................................... 5
Features and Functions ....................................................... 5
Operating Instructions ......................................................... 6
Powering On in Operating Mode ....................................... 6
Powering On in Standby Mode ......................................... 6
Powering Off ...................................................................... 6
Power Menu Options ............................................................ 6
Entering the Power Menu .................................................. 6
Main Menu and Setup Screen Details ................................. 6
Entering the Main Menu .................................................... 6
LCD Menu Map......................................................................7
Menu Item Descriptions.... ...................................................7
Gain/Adjusting the Inut Gain ............................................. 8
Roll Off ................................................................................ 8
Phase (Selecting Audio Polarity) ....................................... 8
Setting Frequency .............................................................. 8
Transmitting Tuning Groups .............................................. 8
RF On? ............................................................................... 9
Setting Transmit Output Power ......................................... 9
Send Freq ........................................................................... 9
SendAll ............................................................................... 9
GetFreq .............................................................................. 9
GetAll .................................................................................. 9
Key Type ............................................................................. 9
WipeKey ............................................................................. 10
SendKey ............................................................................. 10
Programmable Switch Functions ...................................... 10
Selecting Battery Type ....................................................... 10
Remote ............................................................................... 10
Locking the Settings .......................................................... 11
Backlight ............................................................................ 11
Defaults .............................................................................. 11
About .................................................................................. 11
Whip Antennas .................................................................... 11
5-pin Input Jack Wiring ........................................................ 12
Microphone Cable Termination for Non-Lectro Mics ........ 13
Input Jack Wiring for Different Sources..............................14
Supplied and Optional Accessories.....................................15
LectroRM ............................................................................... 16
Wireless Designer Software ............................................... 17
Firmware Update Instructions ............................................. 17
Specifications ....................................................................... 17
Troubleshooting ................................................................... 18
Service and Repair ............................................................... 19
Returning Units for Repair ................................................. 19
2

Introduction

The DBu, DBu/E01 transmitter employs high efficiency
digital circuitry for extended operating time on two AA
batteries. The transmitter can tune in coarse or fine steps
across the UHF television band from 470.100 to 607.950
MHz (DBu/E01 frequency range is 470.100 to 614.375
MHz), with a selectable output power of 25 or 50 mW.
The pure digital architecture enables AES 256-CTR en-
cryption for high level security applications.
Studio quality audio performance is assured by high
quality components in the preamp, wide range input gain
adjustment and DSP-controlled limiting. Input connec-
tions and settings are included for any lavaliere micro-
phone, dynamic microphones and line level inputs. Input
gain is adjustable over a 52 dB range in 1 dB steps to al-
low an exact match to the input signal level, to maximize
the dynamic range and signal to noise ratio.

Frequency Agility

The transmitter tunes across the entire frequency range,
from 470.100 MHz to 607.950 MHz (DBu/E01 frequency
range is 470.100 to 614.375 MHz).

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 transmission needs to be kept secure,
without sacrificing audio quality, Lectrosonics imple-
ments AES256 encryption in our digital wireless micro-
phone systems. High entropy encryption keys are first
created by a Lectrosonics receiver, such as the DSQD
Receiver. The key is then synced with the DBu via the
IR port. The audio will be encrypted and can only be
decoded if both DBu and receiver have the matching en-
cryption keys. If you are trying to transmit an audio signal
and keys do not match, all that will be heard is silence.
LECTROSONICS, INC.