Table of Contents
Related Manuals for Lectrosonics UH400A
Summary of Contents for Lectrosonics UH400A
- Page 1 INSTRUCTION MANUAL UH400A UH400TM Frequency Agile Plug-On UHF Transmitter Featuring Digital Hybrid Wireless™ Technology U.S. Patent Pending Fill in for your records: Serial Number: Purchase Date: Rio Rancho, NM, USA www.lectrosonics.com...
- Page 2 The battery compartment accepts any 9 volt alkaline or lithium battery and makes a positive connection via self-adjusting contacts. The UH400TM is a specialized version of the UH400A that is an integral part of a highly responsive, wireless test and measurement system.
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Page 3: Table Of Contents
Frequency Agile Plug-On UHF Transmitter Table of Contents General Technical Description ................................4 Introduction ......................................4 Digital Hybrid Technology ..................................4 Input Limiter ......................................5 No Pre-Emphasis/De-Emphasis ................................5 Pilot Tone Squelch ....................................5 Wide-Band Deviation .................................... 5 Long Battery Life ....................................5 Frequency Agility .................................... -
Page 4: General Technical Description
Because it uses an analog FM link, the Digital Hybrid The Lectrosonics Digital Hybrid Wireless ™ system enjoys all the benefits of conventional FM wireless... -
Page 5: Input Limiter
Frequency Agile Plug-On UHF Transmitter Input Limiter Pilot Tone Squelch The 400 series transmitters employ a digitally-controlled The 400 system uses one of 256 different ultrasonic analog audio limiter just before the analog-to-digital tones between 25 and 32 kHz, that modulate the carrier converter. -
Page 6: Controls And Functions
DC connected to ground, then you will draw maximum use somewhat less than that time to determine current from the power supply. The UH400A is fully when the battery needs to be replaced. protected against such shorts but the 9 Volt battery will A weak battery will sometimes light the POWER LED to be drained at twice its normal rate. -
Page 7: Frequency Select Switches
(see schematic below). The UH400A is the microphone from being attenuated by the power self-locking onto a standard microphone. supply. The UH400A improves on those functions and is able to use less power from the battery by using +5V / +18V / +48V To Mic constant current sources and current limiters. -
Page 8: Compatibility Mode Indicators
UH400A/UH400TM Compatibility Mode Indicators Mic Level The Modulation LEDS will blink when power is first Used to adjust the audio input level for the proper applied to the transmitter to indicate the selected modulation. operating mode. Immediately after, all LEDS will blink... -
Page 9: Frequency Blocks And Ranges
Frequency Agile Plug-On UHF Transmitter Frequency Blocks and Ranges Each UH400A transmitter is built to cover a pre-se- Use the two Frequency Switches to set the transmitter’s lected range of frequencies (a “block”). The transmitter carrier frequency to match the associated receiver. For... -
Page 10: Operating Instructions
Attaching the Microphone Increase the Mic LEVEL control until the -20 LED 1. Insert the UH400A into the XLR connector on the bottom of the selected microphone. Listen for the glows red and the -10 dB glows green with occa- sionally red flickers. -
Page 11: Adjusting The Transmitter Frequency
100 kHz switch again. up, then immediately turn the unit off. Battery Replacement The UH400A transmitter is powered by a standard alkaline 9 volt battery. It is important that you use ONLY ALKALINE OR LITHIUM batteries for longest life. Standard zinc-carbon batteries marked “heavy duty” or “long-lasting”... -
Page 12: Using The Polarity-Reversing Barrel Adapter
UH400A/UH400TM Using the Polarity- Accessories Reversing Barrel Adapter PHTRAN2 Cordura Pouch with belt clip and velcro flap. The UH400TM transmitter comes with a polarity-reversing XLR barrel adapter for MC5AX use with Earthworks M30 measurement TA5 to XLR adapter for connecting a lavaliere microphones. -
Page 13: Troubleshooting
Frequency Agile Plug-On UHF 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. -
Page 14: Specifications And Features
90 Hz to 20 kHz, +/-1 dB (40 Hz to 20 kHz, +/- 1 db for UH400TM) Note: The audio is deliberately rolled off at 70Hz using a 12 dB/octave filter on the UH400A. This filter cannot be disabled. SmartNR... -
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 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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