INSTRUCTION MANUAL DBu Digital Belt Pack Transmitter DBu, DBu/E01 Fill in for your records: Serial Number: Purchase Date: Rio Rancho, NM, USA www.lectrosonics.
DBu, DBu/E01 Table of Contents Introduction............................................................................. 2 Frequency Agility.................................................................. 2 Encryption............................................................................. 2 Servo Bias Input and Wiring................................................. 3 DSP-controlled Input Limiter................................................. 3 DBu, DBu/E01 Block Diagram...........................
Digital Belt-Pack Transmitter Servo Bias Input and Wiring DSP-controlled Input Limiter The DBu, DBu/E01 input preamp is a unique design that delivers audible improvements over conventional transmitter inputs, is easier to use and much harder to overload. It is not necessary to introduce pads on some mics to prevent overload of the input stage, divide the bias voltage down for some low voltage mics, or reduce the limiter range at minimum gain settings.
DBu, DBu/E01 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. The battery contacts can be cleaned with alcohol and a cotton swab, or a clean pencil eraser.
Digital Belt-Pack Transmitter Features and Functions Modulation Indicators* Antenna Port -20 AUDIO Full access to all settings is provided through the keypad and LCD. 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.
DBu, DBu/E01 Operating Instructions Power Menu Options Powering On in Operating Mode Entering the Power Menu Press and hold the Power Button until a status bar on the LCD is completed. Hold for Rf On DBu DBu 470.100 V1.13 /1.05 -40 -20 • Resume - returns to the previous mode and screen +0 When you release the button, the unit will be operational with the RF output turned on and the Main Window displayed.
Digital Belt-Pack Transmitter LCD Menu Map Gain Freq. Rio Rancho, NM SEL BACK Gain 22 Level meter at bottom of screen Freq. SEL BACK 470.
DBu, DBu/E01 Main Menu and Setup Screen Details Connecting the Signal Source 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. Gain Freq.
Digital Belt-Pack Transmitter Selecting Frequency Selecting Audio Polarity (Phase) The setup screen for frequency selection offers two ways to browse the available frequencies. Frequency groups are also able to be received via IR (Inrared) port sync. The group options are set by the receiver, and will show at the bottom of the screen as No Grp, Grp x, Grp w, Grp v, or Grp u. Use the MENU/SEL button to toggle between options and UP and DOWN arrows to adjust. Gain Freq. ProgSw Rolloff Freq Freq 628.
DBu, DBu/E01 Locking/Unlocking Changes to Settings Changes to the settings can be locked to prevent inadvertent changes being made. BatType TxPower Remote Locked? Locked? Yes No Gain -40 -20 25 0 A small padlock symbol will appear on adjustment screens when changes have been locked.
Digital Belt-Pack Transmitter LectroRM By New Endian LLC LectroRM is a mobile application for iOS and Android operating systems to remotely control Lectrosonics Transmitters. Android The app remotely changes settings on the transmitter through the use of encoded audio tones, which when received by the attached microphone, will alter the configured setting. The app was released by New Endian, LLC in September 2011.
DBu, DBu/E01 Whip Antennas Because the transmitter tunes across such a broad frequency range, it is best to use the appropriate antenna for maximum operation. Two antennas are included with the transmitter, and are shipped from the factory pre-cut and fully assembled. Each antenna covers three blocks. Use the chart below to determine which antenna best fits your needs. Block Frequency Range MHz Cap Color Antenna 470 470.100 - 495.600 Black AMM19 19 486.400 - 511.900 Black AMM19 20 512.
Digital Belt-Pack Transmitter Accessories P/N 26895 Wire belt clip BCSLEBN Spring-loaded belt clip DRKEYCABLE Encryption key and settings transfer cable; micro USB to male 3.5 mm TRS; 42 in.
DBu, DBu/E01 5-Pin Input Jack Wiring Audio input jack wiring: The wiring diagrams included in this section represent the basic wiring necessary for the most common types of microphones and other audio inputs. Some microphones may require extra jumpers or a slight variation on the diagrams shown. PIN 1 Shield (ground) for positive biased electret lavaliere microphones. Shield (ground) for dynamic microphones and line level inputs.
Digital Belt-Pack Transmitter Microphone Cable Termination for Non-Lectrosonics Microphones TA5F Connector Assembly Mic Cord Stripping Instructions 1 4 5 2 3 VIEW FROM SOLDER SIDE OF PINS 0.15" 0.3" Crimping to Shield and Insulation Strip and position the cable so that the clamp can be crimped to contact both the mic cable shield and the insulation. The shield contact reduces noise with some microphones and the insulation clamp increases ruggedness.
DBu, DBu/E01 Input Jack Wiring for Different Sources In addition to the microphone and line level wiring hookups illustrated below, Lectrosonics makes a number of cables and adapters for other situations such as connecting musical instruments (guitars, bass guitars, etc.) to the transmitter. Visit www.lectrosonics.com and click on Accessories, or download the master catalog. A lot of information regarding microphone wiring is also available in the FAQ section of the web site at: http://www.lectrosonics.
Digital Belt-Pack Transmitter Microphone RF Bypassing Line Level Signals When used on a wireless transmitter, the microphone element is in the proximity of the RF coming from the transmitter. The nature of electret microphones makes them sensitive to RF, which can cause problems with microphone/transmitter compatibility.
DBu, DBu/E01 Wireless Designer Software Download the Wireless Designer software installer from the web sites under the SUPPORT tab at: http://www.lectrosonics.com/US Wireless Designer only needs to be installed the first time the software is used. Once the software is installed, updates are available by simply clicking on an item in the Help Menu. Note: If Wireless Designer is already installed, you must uninstall it before attempting to install a new copy.
Digital Belt-Pack Transmitter Specifications Operating Frequencies: DBu DBu/E01 470.100 - 607.950 MHz 470.100 - 614.375 MHz NOTE: It’s the user’s responsibility to select the approved frequencies for the region where the transmitter is operating Frequency Selection Steps: 25 kHz Audio Frequency Response: 20 Hz – 20 kHz +- 3dB RF Power output: Selectable; 25 or 50 mW Frequency Stability: ± 0.
DBu, DBu/E01 Troubleshooting It is important that you follow these steps in the sequence listed. Symptom: Possible Cause: Transmitter Battery LED off when Power Switch “ON” 1. Batteries are inserted incorrectly. 2. Batteries are low or dead. No Transmitter Modulation LEDs when Signal Should be Present 1. 2. 3. 4. 5. 6. Receiver Indicates RF But No Audio 1. 2. 3. Receiver RF Indicator Off 1. 2. 3. 4. 5.
Digital Belt-Pack Transmitter Service and Repair If your system malfunctions, you should attempt to correct or isolate the trouble before concluding that the equipment needs repair. Make sure you have followed the setup procedure and operating instructions. Check the interconnecting cables and then go through the Troubleshooting section in this manual.
DBu, DBu/E01 22 LECTROSONICS, INC.
Digital Belt-Pack Transmitter Rio Rancho, NM 23
LIMITED ONE YEAR WARRANTY The equipment is warranted for one year from date of purchase against defects in materials or workmanship provided it was purchased from an authorized dealer. This warranty does not cover equipment which has been abused or damaged by careless handling or shipping. This warranty does not apply to used or demonstrator equipment. Should any defect develop, Lectrosonics, Inc. will, at our option, repair or replace any defective parts without charge for either parts or labor.
