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LT
Synthesized UHF Belt-Pack Transmitter
Featuring
Digital Hybrid Wireless
Technology
US Patent 7,225,135
Quick Start Steps
1) Install good batteries and turn power on (see pages
7 and 8).
2) Set the compatibility mode to match the receiver
(see page 10).
3) Connect the signal source and adjust input gain for
optimum modulation level (see pages 10 and 11).
4) Set Step Size and frequency to match receiver
(see page 11). Also see receiver manual for scan-
ning procedure to find a clear operating frequency.
5) Turn on the receiver and verify that solid RF and
audio signals are present (see receiver manual).
Fill in for your records:
Serial Number:
Purchase Date:
®
INSTRUCTION MANUAL
Rio Rancho, NM, USA
www.lectrosonics.com
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Related Manuals for Lectrosonics LT
Summary of Contents for Lectrosonics LT
- Page 1 find a clear operating frequency. 5) Turn on the receiver and verify that solid RF and audio signals are present (see receiver manual). Fill in for your records: Serial Number: Rio Rancho, NM, USA Purchase Date: www.lectrosonics.com...
- Page 2 LECTROSONICS, INC.
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Page 3: Table Of Contents
Earlier Transmitters: .............16 Simple Wiring - Can ONLY be used with No Pre-Emphasis/De-Emphasis ...........5 Pilot Tone Squelch ..............5 Servo Bias Inputs: ...............16 LT Block Diagram ..............5 Microphone RF Bypassing ..........17 Battery Installation ..............6 Line Level Signals ...............17 Belt Clips .................6 Wiring Diagram for MI39A Instrument Cable ......17... -
Page 4: Introduction
DSP “compatibility modes” allow the transmission. Because it uses an analog FM link, Digital LT to also be used with a variety of analog receivers by Hybrid Wireless enjoys all the benefits of conventional emulating the compandors found in earlier Lectrosonics FM wireless systems, such as excellent range, efficient... -
Page 5: Dsp-Controlled Input Limiter
MHz above or below the previous one. ventional pre-emphasis (HF boost) in the transmitter and de-emphasis (HF roll off) in the receiver. Thus, the potential distortion problems associated with pre-em- phasis and de-emphasis are eliminated. LT Block Diagram Servo Bias Bias Voltage LT Transmitter Supply... -
Page 6: Battery Installation
Insert the batteries according to the markings on the back of the housing. 623.400 NOTE: If a mismatch exists between the receiver and transmitter, an error message will appear on the transmitter LCD stating what the problem is. See page 13 for more information. LECTROSONICS, INC. -
Page 7: Operating Instructions
Battery Status LED Indicator Alkaline, lithium or rechargeable batteries can be used NOTE: The battery timer feature in many Lectrosonics receivers is very helpful in measuring to power the transmitter. The type of batteries in use are battery runtime when using rechargeable batteries. -
Page 8: Powering On In Standby Mode
Resume AutoOn? The prompt in the upper right corner may display one or both arrows, depending upon Rf On? what adjustment can be made. If the changes are locked, a small padlock symbol will appear. AutoOn? Pwr Off LECTROSONICS, INC. -
Page 9: Locking/Unlocking Changes To Settings
Digital Hybrid Wireless Belt-Pack Transmitter Locking/Unlocking Changes to Settings Main Window Indicators Changes to the settings can be locked. The Main Window displays the block number, Standby or Operating mode, operating frequency, audio level, battery status and programmable switch function. When Gain StepSize Locked? -
Page 10: Selecting The Compatibility (Compat) Mode
Digital Hybrid receivers. The receiver must also be set to the Digital Hybrid compatibility mode. If the programmable switch function is set for Talkback, IFB Series works with Lectrosonics IFB R1/R1a analog the Main Window will indicate that the function is en- receivers. -
Page 11: Adjusting The Input Gain
Normally, the receiver is used to find a clear operat- Greater than +10 dB ® ing frequency. All Lectrosonics Digital Hybrid Wireless receivers provide a scanning function to quickly and NOTE: Full modulation is achieved at 0 dB, when the “-20” LED first turns red. The limiter can cleanly easily find prospective frequencies with little or no RF... -
Page 12: Selecting Frequency Using Two Buttons
Helpful Features on Receivers Lith. Remote To aid in finding clear frequencies, several Lectrosonics receivers offer a SmartTune feature that scans the tun- If you are using rechargeable batteries, it is better to ing range of the receiver and displays a graphical report... -
Page 13: Enabling Remote Control
Transmitter settings can be configured using special A receiver with IR Sync capability can transfer the set- tones generated by Lectrosonics RM or RM2 remote tings for Frequency, Step Size and Compatibility mode control units, or by a smartphone using a remote control to the transmitter via the IR ports. -
Page 14: 5-Pin Input Jack Wiring
5) Solder the wires and resistors to the pins on the insert according to the diagrams shown in Wiring Hookups for Different Sources. A length of .065 OD clear tubing is included if you need to insulate the resistor leads or shield wire. LECTROSONICS, INC. -
Page 15: Microphone Cable Termination For Non-Lectrosonics Microphones
VHF transmitters with 5-pin jacks require a different termination. Lectrosonics lavaliere microphones are terminated for compatibility with VHF and UHF transmitters, which is different from what is shown here. Rio Rancho, NM... -
Page 16: Input Jack Wiring For Different Sources
NOTE: This Servo Bias wiring is not compatible with earlier versions of Lectrosonics transmitters. Check with the factory This wiring is fully compatible with 5-pin inputs on Lectrosonics to confirm which models can use this wiring. transmitters such as the LM and UM Series. This is the wiring for the Lectrosonics M152 lavaliere microphone. -
Page 17: Microphone Rf Bypassing
Line Level More Headroom Use 330 pF capacitors. Capacitors are available from (20 dB) Lectrosonics. Please specify the part number for the desired lead style. Leaded capacitors: P/N 15117 Leadless capacitors: P/N SCC330P All Lectrosonics lavaliere mics are already bypassed and do not need any additional capacitors installed for proper operation. -
Page 18: Rm Remote Control
1/4” plug MI39AST Instrument cable; active type for use with most instrument pickups; straight 1/4” plug MC35 Line level adapter cable; XLR-F to TA5F; 37” length MC41 Dynamic mic level adapter cable; XLR-F to TA5F; 37” length LECTROSONICS, INC. -
Page 19: Operating Notes
Digital Hybrid Wireless Belt-Pack Transmitter Troubleshooting It is important that you follow these steps in the sequence listed. Symptom: Possible Cause: Transmitter Battery LED off 1. Batteries are inserted incorrectly. when Power Switch “ON” 2. Batteries are low or dead. No Transmitter Modulation LEDs 1. -
Page 20: Specifications And Features
This device complies with FCC radiation exposure limits as set forth for an uncontrolled environment. This device should be installed and operated so that its antenna(s) are not co-located or operating in conjunction with any other antenna or transmitter. Specifications subject to change without notice LECTROSONICS, INC. - Page 21 Digital Hybrid Wireless Belt-Pack Transmitter Rio Rancho, NM...
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Page 22: Service And Repair
LECTROSONICS’ Service Department is equipped and staffed to quickly repair your equipment. In warranty repairs are made at no charge in accordance with the terms of the warranty. Out-of-warranty repairs are charged at a modest flat rate plus parts and shipping. - Page 23 Digital Hybrid Wireless Belt-Pack Transmitter Rio Rancho, NM...
- Page 24 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. If Lectrosonics, Inc. cannot correct the defect in your equipment, it will be replaced at no charge with a similar new item.
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