Summary of Contents for Lectroso smd
- Page 1 INSTRUCTION MANUAL SM, SMD, SMQ Super Miniature Belt-Pack Transmitter With Digital Hybrid Wireless™ Technology Fill in for your records: Serial Number: Purchase Date: Rio Rancho, NM, USA www.lectrosonics.com...
- Page 2 Thank you for selecting the Lectrosonics SM ultra miniature transmitter. The unique design provides several distinct features for professional applications: Outstanding RF operating range Superb audio quality Ultra-lightweight, corrosion resistant housing Water resistant seals for use in damp environments Programmable compatibility modes for maximum versatility The Digital Hybrid Wireless design (US Patent...
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Page 3: Table Of Contents
Super-Minature Belt Pack Transmitter Table of Contents General Technical Description ................................4 Introduction ......................................4 Digital Hybrid Wireless™ Technology* ..............................4 No Pre-Emphasis/De-Emphasis ................................4 Low Frequency Roll-Off ..................................4 Input Limiter ......................................5 Digital Signal Processor ..................................5 Microprocessor, PLL and VCO Circuits ..............................5 Compatibility Modes ..................................... -
Page 4: General Technical Description
General Technical Description Introduction Lectrosonics Digital Hybrid Wireless™ systems over The SM transmitter uses ±75 kHz wide deviation for an come channel noise in a dramatically new way, digitally extremely high signal to noise ratio, switching power encoding the audio in the transmitter and decoding it in supplies to provide constant voltages to the transmitter the receiver, yet still sending the encoded information via an analog FM wireless link. -
Page 5: Input Limiter
(only in 400 Series, 200 Series, about 4.5 hours of operation using a single AA lithium battery (Two AA batteries for the SMD/Q). If shorter IFB Compatibility Mode, and Mode 6 – see Pilot Tone Squelch ). It also controls the input limiter. -
Page 6: Controls And Functions
Controls and Functions Modulation Control Panel LEDs Signal Level -20 LED -10 LED Battery Compartment Less than -20 dB Cover Plate UP Arrow -20 dB to -10 dB Green -10 dB to +0 dB Green Green +0 dB to +10 dB Green Antenna Greater than +10 db... -
Page 7: Sm Screen Selections
Super-Minature Belt Pack Transmitter SM Screen Selections While in the compatibility mode screen, pressing either Six screens are used to set up and operate the SM. the AUDIO or FREQ button exits to standby mode. To These screens are used to set the operating frequency, power off from the compatibility mode screen, press adjust the audio modulation level, select the Compatibil... -
Page 8: Standby Mode
OFF The SM transmitter is powered by a single standard AA AUDIO and FREQ buttons from 1.5 volt battery, while the SMD and SMQ use two AA a power off condition places the batteries. We recommend using lithium batteries for unit in Standby Mode. -
Page 9: Operating Instructions
Super-Minature Belt Pack Transmitter Operating Instructions Power Up and Boot Sequence Standby Mode 1) Ensure that a good battery is installed in the unit. Standby Mode allows the user to verify or change the (See Battery Installation .) transmitter’s operating frequency or audio input level, and lock or unlock the front panel controls without 2) Simultaneously press and hold the AUDIO and transmitting any signals. -
Page 10: Setting Transmitter Operating Frequency
Setting Transmitter Operating Frequency Attaching a Microphone and Adjusting Gain The Operating Frequency of the SM can be displayed The front panel Modulation LEDs indicate limiter activity. either in MHz or as a two-digit hexadecimal number. (See chart below.) Once set, the transmitter’s audio (See Controls and Functions, FREQ Button .) The SM’s level setting should not be used to control the volume operating frequency can be set with the unit in Standby... -
Page 11: Locking Or Unlocking The Control Panel
Super-Minature Belt Pack Transmitter Locking or Unlocking the Control Panel The Lock mode protects the transmitter from accidental changes to its settings. 1. Ensure the SM setup is complete (operating frequency, audio level, Compatibility Mode, sensitiv ity to remote control). 2. Simultaneously press both the Up and Down arrow buttons to start the Lock... -
Page 12: 5-Pin Input Jack Wiring
5-Pin Input Jack Wiring Microphone RF Bypassing The wiring diagrams included in this section represent the basic wiring necessary for the most common types When used on a wireless transmitter, the microphone of microphones and other audio inputs. Some micro element is in the proximity of the RF coming from the phones may require extra jumpers or a slight variation transmitter. -
Page 13: Wiring Hookups For Different Sources
Super-Minature Belt Pack Transmitter Wiring Hookups for Different Sources In addition to the wiring hookups illustrated below, SM will require new wiring. If the wiring is not changed, Lectrosonics makes a number of cables and adapters they will have much higher output than usual and extra distortion at high levels. -
Page 14: Troubleshooting
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 PWR LED OFF 1) Battery is inserted backwards or dead. 2) Transmitter not powered up. - Page 15 Super-Minature Belt Pack Transmitter SYMPTOM POSSIBLE CAUSE HISS AND NOISE -- AUDIBLE DROPOUTS 1) Transmitter gain (audio level) far too low. 2) Receiver antenna missing or obstructed. 3) Transmitter antenna missing. 4) Operating range too great. 5) Signal interference. Turn off transmitter. If receiver’s signal strength indicator does not drop to nearly zero, this indicates an interferring signal may be the problem.
- Page 16 LECTROSONICS, INC.
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Page 17: Specifications And Features
103.5 108.5 RF Power output: SM: 100 mW (nominal) NORMAL 107.0 111.5 Note: The dual envelope “soft” SMD: 100 mW (nominal) limiter provides exceptionally good FULL 108.5 113.0 SMQ: 250 mW (nominal) handling of transients using variable Compatibility Modes (6) Digital Hybrid Wireless™... - Page 18 LECTROSONICS, INC.
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Page 19: Service And Repair
Super-Minature 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 interconnect ing cables and then go through the TROUBLESHOOTING section in this manual. -
Page 20: Limited One Year Warranty
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.