Lectrosonics DBu Quick Start Guide
Quick
Start
Guide
Digital Belt Pack Transmitter
Fill in for your records:
Serial Number:
Purchase Date:
Digital Hybrid Wireless® US Patent 7,225,135
This guide is intended to assist with
initial setup and operation of your
Lectrosonics product.
For a detailed user manual, download the most current
version at:
www.lectrosonics.com
31 May 2019
DBu Features and Functions
Modulation
Indicators*
IR Port
Function Switch
Programmable
Antenna
Port
Battery
status LED
Return to
previous screen
-20
AUDIO
IR PORT
DBu
470.100
-40
u
-10
-20
PWR/FUNC
+0
Audio
Input
Jack
Key verification
LED
Menu navigation
buttons
Power button
Belt clip
mounting hole
Battery
compartment
door
LECTROSONICS, INC.2
Belt clip
mounting hole
USB Port
Programmable Switch
The transmitter can also be configured as a “one button” device by locking the
ability to make changes with the keypad, and configuring the top panel switch
as either power on/off or a mute function.
Modulation Indicator LEDs
When the transmitter is set to MUTE, the -10 Modulation Indicators LED will
glow solid red. Otherwise, the -10 Modulation Indicators LED will glow solid
green when transmitter is on.
Belt Clips
The wire belt clip may be removed by pulling the ends out of the holes in the
sides of the case. Be sure to have a firm grip to avoid scratching the surface
of the housing.
An optional spring-loaded, hinged belt clip (model number BCSLEBN) is also
available. This clip is attached by removing the plastic hole cap on the back of
the housing and mounting the clip with the supplied screw.
IR (infrared) Port
The IR port is available on the top of the transmitter for quick setup using a
receiver with this function available. IR Sync will transfer the settings for frequency from the receiver to the transmitter.
Remove hole cap to
attach spring loaded
belt clip
www.lectrosonics.com 3
Battery Installation
The transmitter is powered by two AA batteries. We recommend using alkaline, lithium, or rechargeable batteries for longest life.
The battery status circuitry compensates for the difference in voltage drop
between alkaline and lithium batteries across their usable life, so it’s important
to select the correct battery type in the menu.
Because rechargeable batteries run down quite abruptly, using the Power
LED to verify battery status will not be reliable. However, it is possible to track
battery status using the battery timer function available in the receiver.
Push outward on the battery compartment door and lift it to open.
Slide door out to release catch
Lift door to open
Insert the batteries according to the markings on the back of the housing.
If the batteries are inserted incorrectly, the door will close but the unit will not
operate.
LECTROSONICS, INC.4
The battery contacts can be cleaned with alcohol and a cotton swab, or a
clean pencil eraser. Be sure not to leave any remnants of the cotton swab or
eraser crumbs inside the compartment.
Contact springs
Battery Status LED Indicator
Alkaline, lithium or rechargeable batteries can be used to power the transmitter. The type of batteries in use are selectable in a menu on the LCD.
When alkaline or lithium batteries are being used, the LED labeled BATT on
the keypad glows green when the batteries are good. The color changes to red
when the they are nearing the end of life. When the LED begins to blink red,
there will be only a few minutes remaining.
The Power/Function LED on the top panel will mirror the keypad LED unless
the programmable switch is set to Mute, and the switch is turned on.
The exact point at which the LEDs turn red will vary with battery brand and
condition, temperature and power consumption. The LEDs are intended to
simply catch your attention, not to be an exact indicator of remaining time.
A weak battery will sometimes cause the Power LED to glow green immediately after the transmitter is turned on, but it will soon discharge to the point
where it will turn red or the unit will turn off completely.
Rechargeable batteries give little or no warning when they are depleted. If
you wish to use these batteries in the transmitter, the most accurate way to
determine runtime status is by testing the time provided by a particular battery brand and type, then using the BatTime function to determine remaining
runtime.
NOTE: Refer to the Main Menu and Setup Section for BatTime details.
www.lectrosonics.com 5
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