SoundTrack LxT Data Displays

The Instrument Software supports the organization and display of the measurement data such that the interpretation of that data is a logical and simple task for the end-user. The software provides multiple display choices by the use of simultaneous measurement parameters for frequency weightings and detector selection. The Data Displays show the following basic SLM measurements including the optional 1/1Octave Band Data and/or the optional 1/1 & 1/2 Octave Band Data:

Live Page

(1) The Live Data Display (1 second Leq), where the displayed measurements are always active, real-time data consisting of:

• Bar Graph display: showing 1second Leq data over the last 120seconds

• Leq: most recent measurement ... a numeric display with selectable A/C/Z frequency weighting and 1 second integration time

• Instantaneous RMS Levels (L):  measurement from the RMS detector  ... a numeric display with selected A/C/Z frequency weighting and Slow/Fast/Impulse detectors

• Peak Level: most recent measurement ... a numeric display with selected A/C/Z frequency weighting

(2) I/1  Octave Band Analyzer Data Display, showing:

• Bar Graph Displays of Sound Levels in 1/1 Octave Bands and the Instantaneous RMS Sound Level for selected A/C/Z frequency weighting and Slow/Fast/Impulse detector as the Right-Hand Bar

• Instantaneous RMS Sound Level (L) and Frequency: numeric display for selected frequency band for Slow/Fast/Impulse detector at the frequency cursor

• Instantaneous RMS Sound Level (L): numeric display for selected frequency band for selected A/C/Z frequency weighting and Slow/Fast/Impulse detectors at the frequency cursor

(3) 1/1 & 1/3 Octave Band Analyzer Data Displays, showing:

• Bar Graph Displays: of Sound Levels in 1/1 and 1/3 Octave Bands and the Instantaneous RMS Sound Level for selected A/C/Z frequency weighting and Slow/Fast/Impulse detector as the Right-Hand Bar

• Instantaneous RMS Sound Level (L) and Frequency: numeric display for selected frequency band for Slow/Fast/Impulse detector at the frequency cursor

• Instantaneous RMS Sound Level (L): numeric display for selected frequency band for selected A/C/Z frequency weighting and Slow/Fast/Impulse detectors at the frequency cursor

(4) Triggering, showing:

• Instantaneous RMS Levels (L):  with selectable Slow/Fast/Impulse detectors and A/C/Z selectable frequency weighting

• Peak Level (Lpeak): with selectable A/C/Z frequency weighting

• Exceedance Trigger Points: for L and Peak Levels and when exceedance has occurred

Overall Page

(1) The Overall Data Display Page (Leq), where the displayed measurements are:

• Bar Graph display: showing 1second Leq data over the last 120seconds

• Leq: with selectable A/C/Z frequency weighting
  Instantaneous RMS Level (L): for selected A/C/Z frequency weightings

(2) Maximum, Minimum and Peak Sound Levels, showing:

• Leq: with selectable A/C/Z frequency weighting

• Instantaneous RMS Levels (L):  with selected A/C/Z  frequency weighting and Slow/Fast/Impulse detectors

• Peak Level (Lpeak): with selected A/C/Z frequency weighting

• Maximum Peak Level (Lpeak(max): highest level peak detector has measured during run time (equivalent to Peak Hold)

• Lmax: highest level RMS detector has measured during run time (equivalent to Max RMS Hold)

• Lmin: lowest level RMS detector has measured during run time

(3) 1/1 or (1/1 and 1/3) Octave Band Analyzer for OB1 or OB3 Firmware showing:

• Bar Graph Display: of Average Sound Levels (Leq) in a 1/1 or (1/1 and 1) Octave Bands and one bar of Leq data for A/C/Z and Slow/Fast/Impulse selected RMS detector selected frequency weighting for frequency band under cursor.

• Leq: averaged sound level for the selected frequency band over the duration of the measurement

• Lmax: for frequency band under cursor over the duration of the measurement. Note that the Lmax is also indicated by a "dash" above each frequency band bar on the display

• Lmin: for frequency band under cursor over the duration of the measurement. Note that the Lmin is also indicated by a "dash" on each frequency band bar on the display

(4) Dosimeter 1 Page, showing:

• Selected Standard: OSHA-1; OSHA-2; ACGIH; NIOSH; IEC

• Time Weighted Average (TWA): calculated for predetermined Criterion Time

• Projected TWA (ProjTWA): calculated from a small measurement run time as the value of TWA that would have been measured for the Criterion Time

• Daily Personal Noise Exposure (Lep.d): calculated for measurement run time

• Dose: calculated for predetermined Criterion Time and Level

• Projected Dose: calculated for run time and Criterion Level

(5) Dosimeter 2 Page:

• Same available settings as Dosimeter 1 (can be set individually)

(6) Sound Exposure, showing:

• Instantaneous RMS Sound Exposure Level (LE):  with selectable Slow/Fast/Impulse detectors and A/C/Z selectable frequency weighting

• Sound Exposure (Actual): Pa²h and Pa²s

• Sound Exposure (Two Extrapolated Values): Pa²h and Pa²s

(7)  Ln Percentiles, showing:

• Lmin: for A/C/Z and Slow/Fast/Impulse

• Lmax: for A/C/Z and Slow/Fast/Impulse

• Six Sound Level Values: that  exceeded the value Ln "n" percent of the time

(8) Exceedances, showing the number of exceedances that have occurred during the measurement run time and the total duration of exceedances for two RMS detector thresholds and one Peak detector threshold, showing:

• LRMS (two values): for A/C/Z selected frequency weighting and selected Slow/Fast/Impulse detectors

• Lpeak: for A/C/Z frequency weighting

(9) S.E.A showing:

• SEA Value: dB for Z frequency weighting and 1 second integration peaks that exceed 120dB

Further Information ...

(c) 2007 PCB Group, Inc. In the interest of constant product improvement, specifications are subject to change without notice. PCB, IMI with associated logo, ICP, Modally Tuned, Swiveler, Spindler, TORKDISC, Spark, Blaze, and SoundTrack LxT are registered trademarks of PCB Group, Inc. SensorLine is a service mark of PCB Group, Inc. All other trademarks are properties of their respective owners.