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LMS-5 Loudspeaker Measurement System [USB]
 

Tualatin, Oregon USA - April 13, 2010

The LMS™ analyzer has been a valuable electroacoustic analyzer tool for over 20 years, used extensively by many manufacturers worldwide for both R&D and production QC applications. Even 20 years after its original introduction, it provides a resolution/bandwidth product, with native log frequency resolution, and extensive software features that few FFTs can match.

While the LMS analyzer has traditionally only been offered in an ISA card form, all new production will now be based on an External Chassis with USB Interface. LMS-5 is powered from an external 12VDC/1A source, either by the provided universal 120/240VAC adapter, or directly from an auto 12VDC system.

After the last LMS production run, we were faced with more components becoming obsolete. Some of the other through-hole components were also becoming very difficult to obtain and/or had long lead times. The LMS board would have to be redesigned to solve these issues." said Chris N. Strahm, President of Research & Development for LinearX. “At the same time, our PAC-4 stock was also exhausted and it too was a legacy through-hole design with component availability issues. Looking at all of the options, and since the LMS had to be redesigned regardless, we felt the best solution to address all of the issues at once was to produce an LMS USB version."

The LMS-5 USB analyzer will also feature several improvements and new features including:

• Expanded dynamic range of 140dB, and lower noise floor of -121dBm
• Triple A,B,C Multi Function Inputs: Balanced, +48V Phantom power, LVP Interface
• Larger 100mA current capability for 9V LVP interface to support M50 mics and LP201 accel preamp
• True RMS level detector both for accurate noise as well as signal measurements
• Improved/smoother oscillator transitions between decade range changing
• Improved/faster Level Detector for increased measurement sweep rates
• Improved external overvoltage protection of all inputs
• Additional 16 lines of digital I/O on DB25M connector for macro control of relays, servos, etc. for QC
• Onboard EEPROM storage of calibration data
• Updated LMS-5 Win32 application software with new USB Win32 driver
• Multiplexed measurements for single pass triple curves: Dual Line Inputs & Mic Input
• Additional software and macro features, including multiple LT360 Turntable support
• Power Supply: 12VDC/1A, Universal 100-260VAC adapter IEC-320-C8, Car +12V, Battery +12V
• Chassis: Height 1.75 Inches, Width 4.5 Inches, Length 9.0 Inches, 1.5 lbs.

The pricing for the LMS-5 system will likely be unchanged from the previous version at $1395. However, an upgrade/exchange option will also be offered for existing customers who wish to exchange their ISA analyzer boards for a discounted price. In order to provide the lowest possible cost, we will require that the ISA boards be returned for exchange. There are a number of costly and critical ICs on the ISA board that will be recycled and reused on the USB version.

Since the PAC-4 (Portable Analyzer Chassis) product was based on ISA slots, it will no longer be necessary for the LMS-5 USB version, and will likely be discontinued.

Full product information can be viewed/downloaded from our web site at www.linearx.com, or contact sales@linearx.com for more details. ###

 
 

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