Lectrosonics Inc SMV ユーザーズマニュアル

Frequency Agile UHF Ultra-Miniature Belt-Pack Transmitter

Rio Rancho, NM – USA

GENERAL ...................................................................................................................................................................... 4
DIGITAL HYBRID WIRELESS™ TECHNOLOGY .......................................................................................................... 4
NO PRE-EMPHASIS/DE-EMPHASIS ............................................................................................................................ 4
LOW FREQUENCY ROLL-OFF ..................................................................................................................................... 5
INPUT LIMITER .............................................................................................................................................................. 5
DIGITAL SIGNAL PROCESSOR .................................................................................................................................... 5
MICROPROCESSOR, PLL AND VCO CIRCUITS ........................................................................................................ 5
COMPATIBILITY MODES ............................................................................................................................................... 5
PILOT TONE SQUELCH ................................................................................................................................................ 5
CONTROL PANEL .......................................................................................................................................................... 5
WIDE-BAND DEVIATION ............................................................................................................................................... 5
BATTERY LIFE ............................................................................................................................................................... 5
FREQUENCY AGILITY .................................................................................................................................................. 5
CIRCULATOR/ISOLATOR .............................................................................................................................................. 5

LCD SCREEN ................................................................................................................................................................ 6
PWR LED ....................................................................................................................................................................... 6
AUDIO INPUT JACK ...................................................................................................................................................... 6
MODULATION LEDS ...................................................................................................................................................... 6
AUDIO BUTTON ............................................................................................................................................................. 6
FREQ BUTTON .............................................................................................................................................................. 6
UP/DOWN ARROWS ..................................................................................................................................................... 7
ANTENNA ...................................................................................................................................................................... 7
BATTERY COMPARTMENT AND  THUMB SCREW ..................................................................................................... 7

FREQUENCY SCREEN ................................................................................................................................................. 8
AUDIO SCREEN ............................................................................................................................................................ 8
COMPATIBILITY MODE SCREEN ................................................................................................................................. 8
LOCK/UNLOCK SCREEN .............................................................................................................................................. 8
POWER OFF TIMER SCREEN ...................................................................................................................................... 8

POWER UP AND BOOT SEQUENCE ......................................................................................................................... 10
POWER DOWN ............................................................................................................................................................ 10
SELECTING THE COMPATIBLITY MODE .................................................................................................................. 10
SETTING TRANSMITTER OPERATING FREQUENCY ............................................................................................. 11
ATTACHING A MICROPHONE AND ADJUSTING GAIN ............................................................................................ 11
LOCKING OR UNLOCKING THE CONTROL PANEL ................................................................................................. 12

MICROPHONE RF BYPASSING ................................................................................................................................. 13

LINE LEVEL SIGNALS ............................................................................................................................................ 14
WIRING HOOKUPS FOR DIFFERENT  SOURCES .............................................................................................. 14

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

TM

 design (US Patent Pending) combines 24-bit digital audio with analog FM techniques

resulting a system that has the same operating range as analog systems (plus the graceful failure at the limits of that
range), the same spectral efficiency as analog systems, the same long battery life as analog systems, with the
excellent audio found in digital systems.

The SM uses a standard Lectrosonics 5-pin type input jack for use with electret lavaliere mic, dynamic mic, or line
level signals.  A water resistant control panel with LCD, membrane switches and multi-color LEDs make input gain
adjustments and frequency and compatibility mode selection quick and accurate, without having to view the receiver.
The battery compartment accepts an AA alkaline, lithium or NiMH battery.  Plus, the SM is machined from a solid
aluminum block to provide an extremely lightweight and rugged package.  A special non-corrosive finish (the same
one used on NASA space vehicles) resists salt water exposure and perspiration in extreme environments.

The DSP-based design offers backward compatibility with Lectrosonics 100 and 200 Series receivers, and some
other brands of analog wireless receivers.  Only the SM transmitter is covered in this manual.  Companion receivers
are covered in separate manuals.