Lectrosonics UM700 Operating Instructions Manual
Encrypted digital uhf belt-pack transmitter
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Also See for UM700:
- Instruction manual (36 pages) ,
- Quick start manual (2 pages) ,
- Operating instructions and troubleshooting manual (18 pages)
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Summary of Contents for Lectrosonics UM700
- Page 1 UM700 ENCRYPTED DIGITAL UHF BELT-PACK TRANSMITTER OPERATING INSTRUCTIONS and trouble-shooting guide LECTROSONICS, INC. Rio Rancho, NM www.lectrosonics.com...
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Page 2: Table Of Contents
5-PIN INPUT JACK WIRING ................11 TROUBLESHOOTING ..................13 SPECIFICATIONS AND FEATURES ..............14 SERVICE AND REPAIR ..................15 RETURNING UNITS FOR REPAIR ..............15 WARRANTY ................... Back cover The UM700 transmitter is FCC type accepted under Part 74: 470-608MHz and 614-802MHz LECTROSONICS, INC. -
Page 3: Introduction
• A DSP controlled analog limiter provides superior level control. • Eavesdropping is extremely difficult due to the secure encryption. The UM700 is a durable, machined aluminum package in a belt-pack configuration with a removable, spring loaded belt clip. A 5-pin input jack provides taps for any microphone or line level signal. -
Page 4: General Technical Description
This can create serious problems in multichannel wireless systems when an IM signal falls on the carriers, IF frequencies, local oscillator and image frequencies of the systems being operated. To eliminate this problem in the UM700, the modulated radio signal passes through a circular isolator before entering the an- LECTROSONICS, INC. - Page 5 At UHF frequencies, where wavelengths and antennas are shorter than at VHF frequencies, a resonant length wire is preferred over using the microphone cable as the antenna. The antenna on the UM700 consists of a flexible 1/4 wavelength bronze cable, detachable via an SMA connector. The impedance of this connector is 50 Ohms.
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Page 6: Controls And Functions
LF ROLL OFF INPUT JACK The input jack on the UM700 is a Switchcraft TA5M connector that accommodates virtually every lavaliere, hand-held or shotgun microphone available, with positive or negative bias. The input will also cleanly handle line level signals up to 300 mV before limiting. - Page 7 USE ONLY THE SCREW THAT IS SUPPLIED The circuitry is tightly packed into this unit. A longer screw will permanently damage the transmitter! Use only Lectrosonics PN:28528 which is a Phillips head, 4-40 x 3/16", FL100 screw. Rio Rancho, NM – USA...
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Page 8: Battery Installation
UM700 BATTERY INSTALLATION The transmitter is powered by a standard alkaline or lithium 9 Volt battery. It is important that you use ONLY an ALKALINE or LITHIUM battery for longest life. Standard zinc-carbon batteries marked “heavy-duty” or “long lasting” are not adequate. Ni-cad rechargeable batteries will only provide 1.5 hours of operation, or less, and will run down quite abruptly. -
Page 9: Operating Instructions
Digital Frequency Agile UHF Belt-Pack Transmitter OPERATING INSTRUCTIONS 1) Install a fresh battery according to the instructions above. 2) Insert the microphone plug into the input jack, aligning the pins; be sure that the connector locks in. 3) Attach the antenna to the SMA connector on the top of the transmitter. 4) Mute the sound system. -
Page 10: Microphone Cord Termination
UM700 MICROPHONE CORD TERMINATION TA5F Connector Assembly VIEW FROM SOLDER SIDE OF PINS 0.15" Heatshrink Tubing 0.3" Mic Cord Stripping Instructions Be sure the shield wire touches the metal crimp tab. This helps prevent any AM component of the transmitter signal from entering the mic and causing a "whine."... -
Page 11: 5-Pin Input Jack Wiring
PIN 3 Low impedance microphone level input for dynamic microphones. Also accepts hand-held electret micro phones that have their own battery or power supply. PIN 4 4K Ohm source load for non-Lectrosonics electret microphones. Use in conjunction with other pins to provide attenuation of high level input signals. - Page 12 Leaded capacitors: P/N 15117 Leadless capacitors: P/N SCC330P The Lectrosonics M150-700 lavalier mic is bypassed correctly for use with the UM700 and is the recommended microphone for the 700 Series wireless system. LINE LEVEL SIGNALS The normal hookup for line level signals is: Signal Hot to pin 5, Signal Gnd to pin 1, pin 4 jumped to pin 1, and pin 3 jumped to pin 1.
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Page 13: Troubleshooting
Digital Frequency Agile UHF Belt-Pack Transmitter TROUBLESHOOTING Before going through the following chart, be sure that you have a good battery in the transmitter. It is important that you follow these steps in the sequence listed. SYMPTOM POSSIBLE CAUSE TRANSMITTER BATTERY LED OFF 1) Battery is inserted backwards. -
Page 14: Specifications And Features
UM700 SPECIFICATIONS AND FEATURES Operating principle: Proprietary digital modulation with encryption Modulation type: Modified pi/4 DQPSK Sample rate: 44.1 ksps Audio coder: Proprietary sub-band ADPCM Encryption key length: 128 bit (300 trillion trillion trillion keys) Bit rate: 220,500 bps including packet overhead Operating frequencies: 537.600 to 793.500 MHz depending upon local regulations... -
Page 15: Service And Repair
There are no adjustments inside that will make a malfunctioning unit start working. 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 16: Warranty
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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