INSTRUCTION MANUAL DBu-LEMO Digital Belt Pack Transmitter LEMO® is a registered trademark of Interlemo Holding S.A. Corporation Switzerland Fill in for your records: Serial Number: Purchase Date: Rio Rancho, NM, USA www.lectrosonics.
DBu-LEMO Table of Contents Introduction............................................................................ 2 Frequency Agility................................................................. 2 Encryption............................................................................ 2 DSP-controlled Input Limiter................................................ 2 DBu-LEMO Block Diagram.................................................. 3 Battery Installation.............................................
Digital Belt-Pack Transmitter DBu-LEMO Block Diagram DBu/LEMO Transmitter +5V Servo Bias Supply Bias Voltage 0, 2 or 4V Input Preamp HI/Lo Pass Filter Audio Gain Adj Shunt Limiter D-A Converter A-D Converter Input Jack I2S I2S I+Q Baseband Signals (2) AA Batteries Switching Power Supply Limiter Control DSP Clock Low pass filters Power LED Tricolor Microprocessor Key Received Blue LED IR Port Firmware Update UART Security Key USB Jack Keypad Oscillator VCTXO 36.
DBu-LEMO Battery Installation The transmitter is powered by two AA batteries. We recommend using two AA Duracell Ultra batteries. 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 Programmable Function Switch IR Port -20 AUDIO LEMO Audio Input Jack -10 IR PORT PWR/FUNC 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-LEMO Operating Instructions Power Menu Options Powering On in Operating Mode Entering the Power Menu Press and hold the Power Button for several seconds until a moving bar on the LCD progresses. 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. SEL BACK Gain 22 Level meter at bottom of screen Freq. SEL BACK 470.
DBu-LEMO Main Menu and Setup Screen Details Connecting the Signal Source The input jack is a rugged 3-pin LEMO connector with a threaded locking sleeve. Adjusting the Input Gain 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.
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-LEMO 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 Android By New Endian LLC LectroRM is a mobile application for iOS and Android operating systems to remotely control Lectrosonics Transmitters. 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-LEMO 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 20 512.000 - 537.
Digital Belt-Pack Transmitter Microphone Wiring Looking into the 3 pin LEMO mic connector from the outside of the transmitter, the pin centered in the two guide slots is pin 1 (ground). Pin 2 is a 1k resistor to ground. Pin 3 is the audio/bias connection for two-wire microphones and line inputs. Pin 1 Pin 2 Accessories P/N 26895 Wire belt clip BCSLEBN Spring-loaded belt clip Guide slots Pin 3 Voltages, polarity, impedance and line level for all signal sources are selected by menus.
DBu-LEMO Wireless Designer Software Download the Wireless Designer software installer from the web sites under the SUPPORT tab at: http://www.lectrosonics.com/US http://www.lectrosonics.com/europe/ 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: 470.100 - 607.950 MHz Frequency Selection Steps: 25 kHz Selectable; 25 or 50 mW RF Power output: Frequency Stability: ± 0.002% Digital Modulation: 8PSK Equivalent input noise: –128 dBV Input level: Nominal 2 mV to 300 mV, before limiting Greater than 1V maximum, with limiting.
DBu-LEMO 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-LEMO 18 LECTROSONICS, INC.
Digital Belt-Pack Transmitter Rio Rancho, NM 19
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.
