Lectrosonics Digital Hybrid Wireless DBu Manuale utente

Quick

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Guide

Fill in for your records:

Serial Number:

Purchase Date:

This guide is intended to assist with

initial setup and operation of your

Lectrosonics product.

For a detailed user manual, down-

load the most current

version at:

www.lectrosonics.com

Digital Belt Pack Transmitter

31 May 2019

Digital Hybrid Wireless®US Patent 7,225,135

LECTROSONICS, INC.2

DBu Features and Functions

USB Port

Belt clip

mounting hole

Belt clip

mounting hole

Battery

compartment

door

470.100

-40 -20 +0

DBu

Battery

status LED

Key veriﬁcation

LED

Menu navigation

buttons

Power button

Return to

previous screen

PWR/FUNC

AUDIO

-20 -10

IR PORT

Modulation

Indicators*

Programmable

Function Switch

Audio

Input

Jack

Antenna

Port

IR Port

www.lectrosonics.com 3

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 fre-

quency from the receiver to the transmitter.

Remove hole cap to

attach spring loaded

belt clip

LECTROSONICS, INC.4

Battery Installation

The transmitter is powered by two AA batteries. We recommend using alka-

line, 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.

www.lectrosonics.com 5

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 transmit-

ter. 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 immedi-

ately 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 bat-

tery brand and type, then using the BatTime function to determine remaining

runtime.

NOTE: Refer to the Main Menu and Setup Section for BatTime details.

LECTROSONICS, INC.6

Operating Instructions

Powering On in Operating Mode

Press and hold the Power Button until a status bar on the LCD is completed.

Hold

for

Rf On

DBu

V1.13

/1.05

470.100

-40 -20 +0

DBu

When you release the button, the unit will be operational with the RF output

turned on and the Main Window displayed.

Powering On in Standby Mode

A brief press of the Power Button , and releasing it before status bar has

completed, will turn the unit on with the RF output turned off. In this Standby

Mode the menus can be browsed to make settings and adjustments without

the risk of interfering with other wireless systems nearby.

Hold

for

Rf On

Release Power

Button before

the status bar

has completed

to enter standby

mode

470.100

-40 -20 +0

DBu

RF indicator blinks

After settings and adjustments are made, press the power button again to turn

the unit off.

Powering Off

Powering

O . . .

From any screen, power can be turned off by selecting

Pwr Off in the power menu, holding the Power Button

in and waiting for the status bar to complete, or with the

programmable switch (if it is conﬁgured for this function).

If the power button is released, or the top panel switch is

turned back on again before the status bar is completed,

the unit will remain turned on and the LCD will return to

the same screen or menu that was displayed previously.

NOTE: If the programmable switch is in the OFF position, power can

still be turned on with the power button. If the programmable switch is

then turned on, a brief message will appear on the LCD.

www.lectrosonics.com 7

Power Menu Options

Entering the Power Menu

With the unit turned on, press the power button once brieﬂy from any menu

or screen and a menu will appear with several options. Use the and ar-

row buttons to highlight menu items. Then press MENU/SEL to execute the

item or enter a setup screen. The following options are available:

• Resume - returns to the previous mode and screen

• Pwr Off - turns the unit off irrevocably

• Rf On? - enters a screen to enable the operating or standby modes

• AutoOn? - allows the unit to automatically turn back on after a power

failure or when fresh batteries are installed (works in the operating mode

only)

• Backlit - adjusts the duration of the LCD back light to 5 seconds or 30

seconds, or to remain on

• About - displays model number and ﬁrmware

version

LECTROSONICS, INC.8

LCD Menu Map

NOTE: The settings

will be stored when

the BACK button

is pressed.

SEL

BACK

Freq.

Select option with arrow buttons

(None, Ta lkBk, Power, Mute)

Use arrow buttons

to select value

Gain SEL

BACK

Gain

Level meter at bottom of screen

Freq.

470.675

Press MENU/SEL to highlight MHz or kHz

SEL

BACK

ProgSw

SEL

BACK

Rolloff

50 Hz Select value with arrow buttons

(35, 50, 70, 100, 120, 150 Hz)

SEL

BACK

Phase Normal

Invert

Phase

SEL

BACK

BatType Alk.

Lith.

BatType

Select value with arrow buttons

Select option with arrow buttons

Power

ProgSW

SEL

BACK

Locked?

Yes

Locked?

Select option with arrow buttons

SEL

BACK

Default

Settings

Yes

Select option with arrow buttons

SEL

BACK

TxPower

25 mW

50 mW

Select option with arrow buttons

TxPower

SEL

BACK

Remote

Enable

Ignore

Remote

Select option with arrow buttons

SEL

BACK

KeyType Select option with arrow buttons

(Universal, Shared, Standard or Volatile)

KeyType

Universal

SEL

BACK

WipeKey Select option with arrow buttons

(Only available when KeyType is set to

Standard, Shared or Volatile)

WipeKey?

Yes

SEL

BACK

SendKey

Press to send key

SEL

(Only available when KeyType is set to Shared)

www.lectrosonics.com 9

Main Menu and Setup Screen Details

Entering the Main Menu

The LCD and keypad interface makes it easy to browse the menus and make

the selections for the setup you need. When the unit is powered up in either

the operating or the standby mode, press MENU/SEL on the keypad to enter

a menu structure on the LCD. Use the and arrow buttons to select the

menu item. Then press the MENU/SEL button to enter the setup screen.

-40 -20 0

Gain

The prompt in the upper

right corner may display

one or both arrows,

depending upon what

adjustment can be made.

If the changes are locked,

a small padlock symbol

will appear.

Gain

Freq.

ProgSw

Rolloff

Main Window Indicators

The Main Window displays programmable switch function, Standby or Operat-

ing mode, operating frequency, audio level and battery status.

470.100

-40 -20 +0

DBu

MUTE

Frequency (MHz)

Operating

mode

Battery status

Audio level

Programmable

Switch Function

470.100

-40 -20 +0

DBu

MUTE

Mute function

enabled but

not active

If the programmable

switch function is set

for Mute, the Main

Window will indicate

that the function is

enabled.

470.100

DBu

MUTE

<–MUTE–>

Main Window will blink

the word MUTE when

the audio is muted

When the switch is turned

on, the mute icon appear-

ance will change and the

word MUTE will blink at the

bottom of the display. The

-10 LED on the top panel

will also glow solid red.

LECTROSONICS, INC.10

Connecting the Signal Source

Microphones, line level audio sources and instruments can be used with

the transmitter. Refer to the section entitled Input Jack Wiring for Different

Sources for details on the correct wiring for line level sources and micro-

phones to take full advantage of the Servo Bias circuitry.

Adjusting the Input Gain

The two bicolor Modulation LEDs on the top panel provide a visual indication

of the audio signal level entering the transmitter. The LEDs will glow either red

or green to indicate modulation levels as shown in the following table.

Signal Level -20 LED -10 LED

Less than -20 dB Off Off

-20 dB to -10 dB Green Off

-10 dB to +0 dB Green Green

+0 dB to +10 dB Red Green

Greater than +10 dB Red Red

NOTE: Full modulation is achieved at 0 dB, when the “-20” LED ﬁrst

turns red. The limiter can cleanly handle peaks up to 30 dB above this

point.

It is best to go through the following procedure with the transmitter in the

standby mode so that no audio will enter the sound system or recorder during

adjustment.

1) With fresh batteries in the transmitter, power the unit on in the standby

mode (see previous section Powering On in Standby Mode).

2) Navigate to the Gain setup screen.

Gain

Freq.

ProgSw

Rolloff -40 -20 0

Gain

3) Prepare the signal source. Position a microphone the way it will be used

in actual operation and have the user speak or sing at the loudest level

that occur during use, or set the output level of the instrument or audio

device to the maximum level that will be used.

4) Use the and arrow buttons to adjust the gain until the –10 dB glows

green and the –20 dB LED starts to ﬂicker red during the loudest peaks

in the audio.

5) Once the audio gain has been set, the signal can be sent through the

sound system for overall level adjustments, monitor settings, etc.

6) If the audio output level of the receiver is too high or low, use only the

controls on the receiver to make adjustments. Always leave the trans-

mitter gain adjustment set according to these instructions, and do not

change it to adjust the audio output level of the receiver.

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