Related Manuals for Lectrosonics MM400C
Summary of Contents for Lectrosonics MM400C
- Page 1 INSTRUCTION MANUAL MM400C Watertight Miniature UHF Belt-Pack Transmitter Featuring Digital Hybrid Wireless Technology ® Fill in for your records: Serial Number: Purchase Date: Rio Rancho, NM, USA www.lectrosonics.com...
- Page 2 MM400C LECTROSONICS, INC.
- Page 3 • Outstanding RF operating range SMA port on the transmitter. • Superb audio quality The MM400C is machined from a solid aluminum block • Ultra-lightweight, corrosion resistant housing to provide the lightweight, rugged package needed in extreme environments without compromising functional- •...
- Page 4 MM400C LECTROSONICS, INC.
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Page 5: Table Of Contents
Watertight Miniature UHF Belt-Pack Transmitter Table of Contents General Technical Description ................................6 General .........................................6 Digital Hybrid Wireless Technology* ..............................6 ® Low Frequency Roll-Off ..................................6 Input Limiter ......................................7 Digital Signal Processor ..................................7 Microprocessor, PLL and VCO Circuits..............................7 Compatibility Modes ....................................7 Pilot Tone Squelch ....................................7 Wide-Band Deviation ....................................7 Magnetic Power ON/OFF Switch ................................7 Battery Life ......................................7... -
Page 6: General Technical Description
For exam- power, bandwidth and resistance to interference. ple, in sound reinforcement systems, as one instance, The Lectrosonics Digital Hybrid Wireless system over- ® excessive low frequency content can cause excessive... -
Page 7: Input Limiter
A magnetic switch is used to control the application of action is hidden from the listener, but recovers slowly power to the MM400C circuits and as an audio mute from sustained high levels, to both keep audio distortion switch. The function of this switch can be set by the low and preserve short term dynamic changes. -
Page 8: Controls And Functions
Turns On Audio Mutes Audio Mode Antenna If the MM400C Power ON/OFF Switch has been con- Audio Level Control figured for Audio Mute Mode, it is still possible to turn off the transmitter without removing the battery. This Microphone Jack... -
Page 9: Mic Jack
Com- M152-WP (waterproof) is specifically designed for the patiblity Modes and for configuring the Power ON/OFF MM400C, other two-wire lavaliere microphones can be switch. adapted to the MM440C using the WPMC-3 or WPMC- The switches are accessed by loosening the retaining 10 kits. -
Page 10: Battery Installation
PWR LED to verify battery status not reliable with NiMH batteries. It is possible to track battery status using the Battery Timer function available in a num- ber of Lectrosonics receivers. (Refer to your receiver Battery Compartment manual to determine if this function is available. -
Page 11: Operating Instructions
6) Change the Frequency Select Switch settings to All Digital Hybrid receivers are capable of working with one of the following positions: Lectrosonics MM400C transmitter, and by setting the proper Compatibility Mode, the unit will also work with • 100 Series mode: 200 Series and 100 Series analog receivers, plus some •... -
Page 12: Attaching A Microphone And Adjusting Audio Levels
Select Switch settings indicated in the receiver’s loudest voice. display. 7) Once the MM400C’s audio gain has been set, the If you are using a 100 Series receiver, turn off the trans- remaining components of the audio system can be mitter and observe the RF LED on the front panel of the energized and adjusted. -
Page 13: Power Switch Function Selection
Watertight Miniature UHF Belt-Pack Transmitter Power Switch Function Selection The Power ON/OFF Switch can also be used as an au- dio mute switch. When used as an audio mute switch, the power switch causes the transmitter’s audio to be muted when the Power ON/OFF switch is placed in the OFF position. -
Page 14: Replacing The Power Switch Magnet Housing Assembly
MM400C Replacing the Power Switch Magnet Housing Assembly Although the Power Switch’s Magnet Housing Assembly is designed to provide years of rugged use it may be- come inadvertently damaged or lost. Use the following procedure to install a new Magnet Housing Assembly. -
Page 15: Microphone Rf Bypassing
P/N 15117 Install the capacitors as follows: Use 330 pF capaci- Leadless capacitors: P/N SCC330P tors. Capacitors are available from Lectrosonics. Please All Lectrosonics lavaliere mics are already bypassed specify the part number for the desired lead style. and do not need any additional capacitors installed for proper operation. -
Page 16: Replacement Parts And Accessories
MM400C Replacement Parts and Accessories Part/Model # Description 26486 Replacement wire belt clip 21357 Non-watertight audio input plug WPMC-3 Watertight plug kit - 3 pieces WMPC-10 Watertight plug kit - 10 pieces P1201-1 Switch Magnet Housing Assembly UHF Transmitter Antenna Specifications Lay the transmitter on this template to determine the frequency block of the antenna. -
Page 17: Troubleshooting
Watertight Miniature 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 1) Battery is inserted backwards. TRANSMITTER PWR LED OFF 2) Battery is dead. -
Page 18: Specifications And Features
MM400C Specifications and Features Controls: Front panel knob adjusts audio gain. Operating frequencies: Rotary switches on bottom panel adjust Block 470 470.100 - 495.600 transmitter frequency. Block 19 486.400 - 511.900 Audio Frequency Response: 80 Hz to 20 kHz, +/-1dB, -3 dB @ 70 Hz Block 20 512.000 - 537.500... -
Page 19: 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 20: Limited One Year 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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