Lectrosonics DBSM-A1B1

Description

The DBSM-A1B1 digital transcorders was developed specifically for the needs of the film industry and offer time code jam sync capability. It offer hands free setup and adjustment using audible tones and can be put to sleep to conserve battery power during setup while buried inside costuming, then awakened for normal operation when the production begins. Other features include input gain adjustment in 1 dB increments over a 44 dB range and adjustable low frequency audio roll-off for 3 dB down points at 20, 35, 50, 70, 100, 120 or 150 Hz to control subsonic and very low frequency audio content. The transmitter also offers selectable output power of 10, 25 and 50 mW. A special high-density (HDM) transmit mode at 2 mW allows for ultra-tight channel spacing without concern for frequency coordination.

The input section features the unique Lectrosonics servo bias input circuitry with a standard TA5M type jack for
use with electret lavaliere mics, dynamic mics, or line level signals. A DSP-controlled analog audio limiter is
employed ahead of the first mic preamp to protect the entire audio chain from overload. The limiter has a range
of more than 30 dB for excellent overload protection, and a dual release envelope that makes the limiter acoustically transparent while maintaining low distortion of brief transients and longer duration peaks.
A water resistant control panel with LCD, membrane switches and multi-color LEDs make input gain adjustments, frequency and compatibility mode selection quick and accurate. The battery compartment accepts industry-accepted AA batteries (lithium recommended).

The housing is machined from solid aluminum blocks to provide an extremely lightweight and rugged package. A
special non-corrosive finish resists salt water exposure and perspiration in extreme environments.

Frequency Tuning Range
RF-intense multichannel and mobile venues must have a broad selection of frequencies available to alleviate interference problems, especially with the emergence of DTV telecasts. Frequencies are selectable in 25 kHz steps
across the broad tuning range of each frequency band.

Alternate Recording Function
Instead of transmitting, the transmitter may also be used as a stand alone recorder. The industry standard
.wav (BWF) file format is compatible with essentially any audio or video editing software.

Key Features:

• Selectable output power to maximize operating range or battery life
• Ultra-lightweight, corrosion resistant housing
• OLED interface with lockout option
• Servo Bias input circuitry
• IR (infrared) port for fast setup
• Alternate use as recorder on internal microSDHC memory card
• Timecode jam-sync capability with TCXO for <1 ppm accuracy
• High density mode for ultra-tight channel spacing