TSI Instruments EG4 User Manual

THE EDGE

PERSONAL NOISE DOSIMETER

MODEL EG4

USER MANUAL

TSI Contact/Service Information

iii

PERSONAL NOISE DOSIMETER

TSI Contact/Service Information

Should your TSI equipment need to be returned for repair or for recalibration, please contact
the service department at the following number or access the online form via

http://rma.tsi.com. For technical issues, please contact Technical Support.

Service Department and Technical Support: 1-800-680-1220 (USA) or [phone]
E-mail: [e-mail]
Internet: www.tsi.com

International customers

Contact your local, factory-authorized distributor from whom the product was purchased.
You can obtain the name and contact information of your local factory-authorized distributor
from TSI Incorporated by using the e-mail or telephone information listed above.

THE EDGE

MODEL EG4

TSI Contact/Service Information

iv

(This page intentionally left blank)

v Table of Contents

Table of Contents

TSI Contact/Service Information ..................................................................................................... iii

International customers .................................................................................................................... iii

1: Introduction ........................................................................................................................................ 1

Dosimetry ........................................................................................................................................... 1

Noise dosimeter ................................................................................................................................ 2

Range of sound ................................................................................................................................ 3

What do the standards say? ............................................................................................................. 3

Applications of the Edge ................................................................................................................... 4

Noise assessment steps ................................................................................................................... 5

The Edge Model ............................................................................................................................... 5

2: Getting started ................................................................................................................................... 7

Checking the equipment .................................................................................................................. 7

Turning on ......................................................................................................................................... 8

LED indicator .................................................................................................................................... 9

Turning off ......................................................................................................................................... 9

Display and keypad ......................................................................................................................... 10

Diagram .......................................................................................................................................... 10

TSI Detection Mangement Software (DMS) ................................................................................... 11

Loading ........................................................................................................................................... 11

Docking station functionality ......................................................................................................... 11

Docking station components .......................................................................................................... 12

EdgeDock1 or EdgeDock5 ............................................................................................................. 12

Powering EdgeDock1 or EdgeDock5 ............................................................................................. 13

Charging your dosimeter ................................................................................................................ 14

Mounting the docking station to a wall ............................................................................................ 15

Storing the dosimeter ..................................................................................................................... 15

3: Setting-up the Edge via DMS .......................................................................................................... 17

Noise studies ................................................................................................................................... 17

Understanding what data is stored ............................................................................................... 18

Summary data ................................................................................................................................ 18

Time history .................................................................................................................................... 18

Logging ........................................................................................................................................... 19

Views on the Edge .......................................................................................................................... 19

Definitions of data log values and views ......................................................................................... 20

Edge Measurement descriptors/variants ........................................................................................ 22

Docking ............................................................................................................................................ 23

Communicating & downloading data .............................................................................................. 23

Customizing set-up parameters in DMS ....................................................................................... 24

Dosimeter setting ............................................................................................................................ 25

Table of Contents

vi

Display setting ................................................................................................................................ 27

Security setting ............................................................................................................................... 28

Auto Run setting ............................................................................................................................. 29

Firmware update ............................................................................................................................. 30

Saving and sending/setting configurations ..................................................................................... 31

4: Running and operating your dosimeter ........................................................................................ 33

Overview of running a study .......................................................................................................... 33

Positioning the Edge on your shirt .................................................................................................. 34

Windscreen and maintenance ........................................................................................................ 34

Checking battery power .................................................................................................................. 35

Calibrating ...................................................................................................................................... 36

Resetting the dosimeter .................................................................................................................. 37

Setting contrast on dosimeter ......................................................................................................... 38

Running studies .............................................................................................................................. 39

Starting a run .................................................................................................................................. 39

Stopping a study ............................................................................................................................. 40

Indicators/Icons on the display ....................................................................................................... 40

Viewing measurements on the display ......................................................................................... 41

Locking or securing your dosimeter during run .............................................................................. 41

Locking or Securing ........................................................................................................................ 42

Unlocking ........................................................................................................................................ 42

5: Viewing your studies in DMS .......................................................................................................... 43

Downloading data ........................................................................................................................... 43

Viewing data and data finder page ................................................................................................. 45

Report View .................................................................................................................................... 46

Panel Layout View(charts/graphs) .................................................................................................. 47

6: Technical Support ........................................................................................................................... 49

LED indicator: disable/enable ....................................................................................................... 49

Replacing microphone and windscreen ....................................................................................... 50

Attaching/Detaching ....................................................................................................................... 50

Hard Hat Attachment Kit ................................................................................................................. 51

A: Specifications .................................................................................................................................. 53

Standards ......................................................................................................................................... 53

Mechanical characteristics ............................................................................................................ 53

Electrical characteristics ................................................................................................................ 53

Battery ............................................................................................................................................ 53

Environmental effects ..................................................................................................................... 53

Temperature ................................................................................................................................... 53

User Interface .................................................................................................................................. 54

Display ............................................................................................................................................ 54

Keypad ........................................................................................................................................... 54

List of Figures

vii

EdgeDock1 and EdgeDock5 ........................................................................................................... 54

Physical attributes of EdgeDock1 and EdgeDock5 ........................................................................ 54

Measurements ................................................................................................................................. 55

Types .............................................................................................................................................. 55

Measurement parameters .............................................................................................................. 55

Calibration ...................................................................................................................................... 55

Communications ............................................................................................................................. 55

Special functions ............................................................................................................................ 55

Edge Block Diagram ....................................................................................................................... 56

Edge Block Diagram (continued) ................................................................................................... 57

Contact/Service information .......................................................................................................... 58

Technical Support Contacts ........................................................................................................... 58

Service Contact Information ........................................................................................................... 58

Returning for Service ...................................................................................................................... 59

Warranty ........................................................................................................................................... 60

B: Glossary of Terms ........................................................................................................................... 61

C: Measurement equations ................................................................................................................. 69

List of Figures

Figure 1-1: The Edge and dosimetry ........................................................................................................................... 1

Figure 1-2: Illustration of how the dosimeter operates and processes ........................................................................ 2

Figure 1-3: Parameter setup screen for eg4 ............................................................................................................... 6

Figure 2-1: Identifying your equipment ........................................................................................................................ 7

Figure 2-2: Powered on with measurement view displayed ........................................................................................ 8

Figure 2-3: Edge Keypad ........................................................................................................................................... 10

Figure 2-4: EdgeDock1 .............................................................................................................................................. 11

Figure 2-5: Attaching the charger adapter with the plug adapter .............................................................................. 12

Figure 2-6: Attaching charger adapter to EdgeDock1 and EdgeDock5 .................................................................... 13

Figure 3-1: Edge setup and retrieve data buttons in DMS ........................................................................................ 17

Figure 3-2: Sample summary data from DMS reporting ............................................................................................ 18

Figure 3-3: Sample time history data (or logged data) chart ..................................................................................... 18

Figure 3-4: Communicating - connecting a docked Edge to a pc ............................................................................. 23

Figure 3-5: New Hardware wizard for Edge Dock ..................................................................................................... 24

Figure 3-6: Dosimeter screen .................................................................................................................................... 25

Figure 3-7: Edge display screen ................................................................................................................................ 27

Figure 3-8: Edge security setting ............................................................................................................................... 28

Figure 3-9: Edge auto run screen .............................................................................................................................. 29

Figure 3-10: Edge firmware update screen ................................................................................................................. 30

Figure 3-11: Saving and sending Edge setups ........................................................................................................... 31

Figure 4-1: Quick help list for running a study ........................................................................................................... 33

Figure 4-2: Positioning/Attaching the Edge ............................................................................................................... 34

Figure 4-3: Battery indicators .................................................................................................................................... 35

Figure 4-4: Calibrating ............................................................................................................................................... 36

Figure 4-5: Splash screen ......................................................................................................................................... 37

List of Figures

viii

Figure 4-6: Resetting the Edge from the keypad ....................................................................................................... 37

Figure 4-7: Changing the contrast from the keypad .................................................................................................. 38

Figure 4-8: Display screen while running .................................................................................................................. 39

Figure 4-9: Measurement view on the Edge.............................................................................................................. 41

Figure 4-10: Locking/Securing run .............................................................................................................................. 42

Figure 5-1: Communicating between your pc and the Edge ..................................................................................... 43

Figure 5-2: DMS start screen .................................................................................................................................... 44

Figure 5-3: Downloading with the Edge models eg3/eg4 .......................................................................................... 44

Figure 5-4: Recent downloaded data ........................................................................................................................ 45

Figure 5-5: Data Finder page with the downloaded data .......................................................................................... 46

Figure 6-1: Microphone and windscreen assembly ................................................................................................... 50

List of Tables

Table 2-1: LED indicators explained .......................................................................................................................... 9

Table 2-2: EdgeDock1 and EdgeDock5 components .............................................................................................. 12

Table 3-1: Dosimeter views and definitions ............................................................................................................. 21

Table 3-2: Dosimeter measurement descriptors/variants ........................................................................................ 22

Table 4-1: Indicators (i.e., run, stop, battery, and OL) ............................................................................................. 40

1 1: Introduction

Figure 1-1: The Edge and dosimetry

CHAPTER

1

Dosimetry

1: Introduction

Dosimetry

Measuring noise in the workplace is an important element of hearing conservation programs
and noise reduction programs. With a noise dosimeter, you can assess and determine a
worker’s daily exposure to noise levels. This information can be used to ensure compliance
with regulatory bodies or to ensure if hearing conservation programs are needed.

To get you started quickly with the Edge, the first chapter is dedicated to introducing basic
noise dosimetry terms and information. The subsequent chapters will guide you through setting
up the dosimeter, running studies, and assessing your results with easy to follow steps and
illustrations.

1: Introduction

2

DMS – Manage, setup and report

File storage
system

Calculator
Clock

Mic &
Preamp

Range control
(70–140 dB)

Apply filters
(A or C weighting)

Measurement

Results on the Edge

Fast/Slow
Response

Dosimetry

Noise dosimeter

What is a noise dosimeter and how does it compute measurements?

Essentially, a noise dosimeter is composed of the following: a microphone with a preamplifier,
a weighted network, fast or slow response time, an internal clock, calculator, and memory to
store logged data.

The illustration below is a diagram of a basic noise dosimeter. The microphone will, when
exposed to a sound pressure, generate an electrical signal. The signal will be increased by a
preamplifier, and then is regulated to an applicable level by the range control (dB range). The
signal then goes through a filter set or weighting system. The next circuit is the response
circuit, which controls the dampening of the readout. The response choices are typically Slow
or Fast. Finally, the results will display on the dosimeter screen.

For computation and storage, the clock tracks the sampling time. Dosimeters record how long
sound levels exceeded a set upper limit. The calculator computes an Lavg, a dose, a TWA,
and other data. The memory stores all times, calculations, and measurements.

For post-processing, DMS is used to view and analyze your measurement results with the
option to view and/or print reports.

Figure 1-2: Illustration of how the dosimeter operates and processes

1: Introduction

3

Dosimetry

Range of sound

Sound pressure is measured in decibels, or tenths of a Bel. Sound pressure level is indicated
as dB SPL. Since the human ear can detect sounds with an extensive range of amplitude, a
decibel scale is used to simplify the measurement results. For example, the ratio between the
threshold of hearing and threshold of pain in the human ear if measured in true energy is
10,000,000 times! The same range using the dB scale is 0–140 dB referenced to 20 µPa
(Micropascals).

The quietest sound that humans can hear has an amplitude of approximately 0 dB. Prolonged
exposure to sound pressure levels exceeding 85 dB can cause permanent damage to the ear.
Sound levels in excess of 130 dB are more than the human ear can safely withstand and can
result in serious pain and permanent damage.

What do the standards say?

Many organizations have studied and analyzed the effects of high sound exposure on hearing.
As a result, standards were developed to regulate personal noise exposure. In the United
States, the Occupational Safety and Health Administration (OSHA), the Mine and Safety and
Health Administration (MSHA), and the American Conference of Governmental Industrial
Hygienists (ACGIH) have all created regulations and limitations on total permissible noise
exposure. International standards are specified by the health and safety regulations such as
the European Union (EU) Directive 2003/10/EC. Additionally, the International Electrotechnical
Commission (IEC) IEC-61252 has specific guidelines and regulations to monitor noise in the
workplace.

To access these copyrighted standards, please refer to the following:

 OSHA—http://www.osha.gov
 MSHA—http://www.msha.gov
 NIOSH—http://www.cdc.gov/niosh/topics/noise
 ACGIH—http://www.acgih.org/
 IEC—http://www.iec.ch

1: Introduction

4

 As a personal noise dosimeter—used to measure a

worker's daily exposure to noise levels. This information can
be used to ensure compliance with OSHA, MSHA, ACGIH,
IEC, or your own customized parameter settings to
determine if your workers are over-exposed to noise.

 As a time-history monitor—used to provide a worker's

minute-by-minute noise exposure levels. This data can help
you identify major contributors to the average daily noise
exposure.

 As a survey monitor
 Throughout a plant/facility—used to oversee noise levels

throughout an entire facility. You can identify machines and
equipment which produce harmful noise levels.

 Specific areas in a plant/facility—used to identify key areas

as “noisy” and implement noise control options. Employees
may be exposed to unacceptable noise levels.

 As a peak dosimeter—used to detect the highest level of

instantaneous sound pressure.

Peak Measurement: 121.20 dB

Time history: manufacturing

Dosimetry

Applications of the Edge

The Edge has a cable-free, mounted microphone that converts sound pressure into an
electrical signal. This signal is conditioned, monitored, and integrated over time in order to
provide a host of automatically calculated values that can be used in occupational and
environmental noise assessments. Programmable parameters permit the Edge to serve many
applications. The Edge can be used in the following applications:

Introduction1: Introduction

5

1. Perform a task-based work flow analysis of unacceptable “noisy” areas and list

regulations/codes you will follow.

 Observe facility/areas and jot down areas of concern
 Check with standards and noise ordinance regulations in your region/city.

 See Chapter 1 for basic information on dosimetry and standards

3. Running your studies.

 Calibrate dosimeter
 Attach the dosimeter
 Run, observe, and stop your studies
 Understand display indicators

 See Chapter 4 “Running and operating the Edge”

4. View your results via DMS.

 Working with Charts and Graphs
 Organizing and saving your studies

 See Chapter 5 to view measurements with Detection Management

Software DMS

5. Develop corrective actions.

 Engineering: redesign tools, implement changes in workstation
 Administrative: job sharing/rotations, redefinition of job functions, reduce duration

operating tool/equipment, and/or implement medical surveillance

2. Setting-up your dosimeter parameters for your noise studies.

 Customize measurement setup (i.e., criterion level, threshold, weighting, exchange

rate, etc.)

 See Chapter 2 for getting started with your dosimeter
 See Chapter 3 for customizing your set-up parameters
 See Chapter 5 for Noise study scenarios

Dosimetry

Noise assessment steps

Introduction

6

Dosimetry

The Edge Model

The “eg4” model features two virtual dosimeters with data logging. Once the parameters are
set and saved in the dosimeter, you can monitor two different dosimeters by a single press of
the Enter key. This will toggle you between the two dosimeters. The “eg3” model is equipped
with one dosimeter setting and will not data log (older model no longer available).

Figure 1-3: Parameter setup screen for eg4

Virtual dosimeters

You can monitor and log noise studies by enabling two different parameter settings in one
dosimeter, also referred to as “virtual dosimeters”. For instance, you may want to set one
dosimeter to log using the OSHA HC (Occupational Safety and Health Administration - Hearing
Conversation) parameters and also monitor noise with the OSHA PEL (Occupational Safety
and Health Administration – Permissible Exposure Level) settings.

A few scenarios of virtual dosimeters include:

 Industrial noise control
 Hearing conservation compliance
 Work site assessments
 Personal noise verification
 Military applications
 Regulatory compliance (i.e., OSHA, MSHA, IEC, ACGIH)

2: Getting started

7

CHAPTER

2

USB cable- connects
EdgeDock to the PC

EdgeDock1

**Universal charger
adapter (Power supply
cord for the docking
station)

Extra windscreen for
microphone

EdgeDock5

DMS software

 Optional feature

Edge model eg4

 microphone and

windscreen attached

 mounting clasps

attached

Checking the equipment

2: Getting started

This chapter is designed to guide you through basic information you will need to begin logging

Checking the equipment

your studies.

If your instrument was sent to you in a storage case, you will want to remove all the packaging
and acquaint yourself with the following equipment so you can quickly get started with your
noise studies.

NOTE: Depending on the accessories you selected, the dosimeter may have the following

components. For the docking stations, you will either have an EdgeDock1 or an
EdgeDock5. (For more information on parts/accessories, please refer to

www.tsi.com.)

Figure 2-1: Identifying your equipment

2: Getting started

8

View
Displays measurement values, battery
information, and calibration information

LED Indicator

Battery indicator icon

If icon is fully shaded, this indicates full battery
power (approx. 35+ hours)

Turning on

Turning on

1. To turn on the Edge, press the on/off and enter button.

 The Edge splash screen (see Figure 2-3 for an example) will appear indicating the

Figure 2-2: Powered on with measurement view displayed

model (i.e. “eg4”) and firmware version. The screen will be in the measurement view.

2: Getting started

9

LED indicator

Explanation

Red

A flashing red LED indicates the dose has exceeded the alarm level.

Amber

A flashing amber LED indicates the dosimeter is stopped and has not
exceeded the dose alarm level.

Green

A flashing green LED indicates the dosimeter is running and has not
exceeded the dose alarm level.

LED indicator

Turning off

LED indicator

There is a three-color LED indicator on the Edge, located to the right of the TSI logo which
includes Red, Amber, and Green.

Table 2-1 identifies when and why the LED indicator color will appear.

NOTE: The LED indicator can be disabled via DMS (see section, “Dose indicator LED”).

Navigating

Once the dosimeter is “Powered-On”, press the up/down ▲/▼ arrows to navigate through
the measurement values and battery run time.

Turning off

1. Press and hold the on/off and enter

 “3, 2, and 1” countdown will appear as the dosimeter is powered off.

Table 2-1: LED indicators explained

button.

NOTE: To halt the power off mode, simply let go of the on/off enter button.

2: Getting started

10

Display (Splash screen shown)

 View data and various indicators

Up Arrow ▲

 Used to scroll through display/screen views

On/Off and Enter

 Used to power On/Off the meter.
 Used to switch between (toggle) dosimeter one

and dosimeter two measurements and settings.

Down arrow ▼

 Used to scroll through display/screen views

Run ► and Stop ■

 Used to activate meter when running or logging

measurements.

 Used to Stop your noise study.

LED indicator

 Red – indicates dose exceeded the alarm level
 Amber – dosimeter stopped
 Green – dosimeter measuring

Windscreen and microphone

EG-4

Display and keypad

Display and keypad

The keypad is used to run and stop your studies, view your measurement values, and power
on and off the dosimeter.

Diagram

The following diagram explains the features on the display and keypad.

Figure 2-3: Edge Keypad

2: Getting started

11

Charging Indicator

Power Indicator

Charge contacts
Power connector
USB connector

TSI Detection Mangement Software (DMS)

TSI Detection Mangement Software (DMS)

TSI Detection Management Software (DMS) is a software application designed by TSI that
runs under the Windows® operating system. You can use DMS for a variety of functions related
to the Edge dosimeter and with many other TSI instruments. DMS has the ability to customize
your set-up parameters, display data, manipulate data, and create reports.

Loading

To load DMS, follow the screen prompts.

The software will automatically load the drivers for the EdgeDock1 and/or EdgeDock5. If
loading from the TSI Detection Internet site, follow the directions online located at

www.tsi.com.

Docking station functionality

Depending on the kit you purchased, you may have an EdgeDock1 and/or an EdgeDock5.
Both are designed similarly with the same LED indicators. The main difference with the
EdgeDock5 is that it has five bays for docking, charging, and/or managing the dosimeters. If
desired, the EdgeDock5 will charge all docked instruments at one time.

The docking station serves a dual-purpose role:

1. It is used to charge the battery on the dosimeter(s).

2. It is used to communicate between the software (DMS) and the dosimeter (i.e., import,
export settings and measurement files).

Figure 2-4: EdgeDock1

2: Getting started

12

Docking station components

Explanation

Charging indicator

Identifies if the dosimeter is “charging” or “fully charged”. A red
blinking LED indicates the dosimeter is charging. A solid green
LED equates to a fully charged dosimeter. (Note the charging

indicator is the first, or top, LED indicator.)

Power indicator

An amber LED indicates the docking station is powered on.

Power connector

Attach the power connector cable to the docking station in order to
charge the dosimeter(s).

USB connector

Attach the USB connector to communicate with the dosimeter(s).

Charge Contacts

Placing the dosimeter (s) onto the charge contacts allows charging
and communication.

B. Slide plug adapter into the crevices of base

A. Charger adapter

Docking station functionality

Docking station components

The table below explains the EdgeDock1 or EdgeDock5 LED indicators, power connector, USB
connector, and contact pins.

Table 2-2: EdgeDock1 and EdgeDock5 components

EdgeDock1 or EdgeDock5

The EdgeDock1 and EdgeDock5 are powered by a 12-volt charger adapter.

Figure 2-5 illustrates the assembly of the charger adapter and the plug adapter. It slides into place by
guiding it down the back cavity (opening) of the power supply.

NOTE: the example is a typical adapter which may be different than the one you are using.

Mechanically, it will function similarly.

Figure 2-5: Attaching the charger adapter with the plug adapter

2: Getting started

13

EdgeDock1 LED indicator

Amber light indicates “ON”.

Charger adapter cord

Docking station functionality

Powering EdgeDock1 or EdgeDock5

 Powering EdgeDock1 or EdgeDock5

1. Assemble the charger adapter and plug adapter as illustrated in Figure 2-5. (It will be the

same process for an EdgeDock5.)

2. Plug the charger adapter directly into the wall (electrical wall plate).

3. Plug the opposite end into the power connector (or jack) of the EdgeDock1.

NOTE: An amber, solid light will appear indicating power to the charger.

Figure 2-6: Attaching charger adapter to EdgeDock1 and EdgeDock5

2: Getting started

14

Open cavity & contacts

Slides into “Hook” of

EdgeDock. The contacts
will align to each other.

Hook

Docking station LED

Contacts

Dosimeter LED dock

3
Docked

EdgeDock1

1

2

Backside of Edge

Docking station functionality

Charging your dosimeter

The number of hours you have used your dosimeter from your last charge will impact your total charge

time. For example, if the battery clock indicator (see “Checking the battery power” for more
information) displays 20 hours remaining on the battery and you wish to charge the battery, the
approximate charging time is 2 hours.

To charge a fully discharged battery, allow approximately 4 to 4.5 hours of charge time.

 How to charge

1. Plug in the power adapter to the EdgeDock (see Figure 2-6).

 When powered on, the EdgeDock bottom LED indicator will appear solid amber.

2. Slide the Edge (1) downward onto the Hook of the EdgeDock (see Figure 2-7 below).

NOTE: When the dosimeter is docked, the top LED indicator on the base will be illuminated. A

red flashing LED indicates it is charging. A green solid LED indicates a fully charged

battery.

Figure 2-7: Docking the Edge with a single and 5-bay docks

2: Getting started

15

Screw slots
Used to mount to a wall

Docking station functionality

Mounting the docking station to a wall

The docking station is equipped with two single screw slots in case you wish to mount the docking
station to the wall. The figure below displays the backside of the single bay dock.

Figure 2-8: Backside of EdgeDock1

Storing the dosimeter

To preserve the life of the battery, it is suggested that the dosimeter is turned off when you are
storing the dosimeter.

Additionally, if the dosimeter is docked and stored on the docking station when it is powered off, it will
still draw a small amount of battery power from the dosimeter. Thus, it is recommended to store the
dosimeter(s) separately from the docking station.

2: Getting started

16

Docking station functionality

(This page intentionally left blank)

3: Setting-up the Edge via DMS

17

CHAPTER

3

Family:

Noise Dosimeters

Edge model

Setup:

Select to access
the acoustic
family

Download panel

Noise studies

3: Setting-up the Edge via DMS

Noise studies

The eg4 model comes equipped with two customizable user setups. The eg3 model has one
customizable user setup. You have the option to customize the parameters for threshold
values, exchange rate values, an upper limit value, and a criterion level.

This chapter explains data storage, the pre-set views on the dosimeter, and how to customize
the parameters and display of your Edge via DMS. It concludes with an explanation of

downloading data from the dosimeter to the software.

Figure 3-1: Edge setup and retrieve data buttons in DMS

3: Setting-up the Edge via DMS

18

Understanding what data is stored

Understanding what data is stored

When you are running noise dosimetry studies, there are two types of data stored on the
dosimeter which include the summary data and time history (or Logged) data.

Summary data

Summary data represents values that occurred over the entire run of the study. For an average
value, such as Lavg, it represents the average decibel value over the entire run time. Peak and
Max values are the highest measurements that occurred throughout the run time.

Figure 3-2: Sample summary data from DMS reporting

Time history

Time history data is also referred as “logged data” which plots measurement values in minute

by minute intervals.

Time History data represents values that occurred over the most recent time period, which is
the logging interval. For example, if the log interval is 1 minute, then the Peak value is the
highest Peak value for that 1 minute, and the Lavg value is the average dB value for that
1 minute.

Figure 3-3: Sample time history data (or logged data) chart

3: Setting-up the Edge via DMS

19

Measurements/parameters
which appear on the Edge

Edge: customize
what appears on
the display

Views on the Edge

Logging

eg4 model only logs at one minute intervals and includes the following measurements:

 Meter 1 logs Lavg/Leq, Lcpk, and L
 Meter 2 logs Lavg/Leq

If the dosimeter runs for one hour, then it will log 60 Lavg/Leq results, and 60 L
levels. In DMS, you can customize the logged data chart results by checking Lavg/Leq, Lcpk,
and/or L

measurement values when using the button.

ASMAX

Views on the Edge

The Edge is a user-friendly and customizable dosimeter. In DMS, you may select the
appropriate measurement values or views to appear or not appear on the display of your
dosimeter using the Display Setup configuration as displayed below. Table 3-1 briefly identifies
the displayed data values and views with a brief definition. (See the glossary for additional
information of these terms.)

NOTE: The measurements/parameters are viewable in charts and graphs in DMS when

downloaded.

ASMX

/Lcpk

ASMAX

3: Setting-up the Edge via DMS

20

Views on the
EDGE

Explanation

LAS

Sound pressure level—is the basic measure of noise loudness, expressed in
decibels. (In DMS this is noted as “SPL”)

L

ASMX

Maximum sound level—is the highest sound level recorded during a measurement
interval with a particular response setting (Slow or Fast) and weighting (A or C).
L

MAX

is the highest value that is included in Lavg or dose calculations.

 Under OSHA regulations, unprotected workers may not be exposed to maximum

sound levels greater than 115 dB, measured with a Slow response rate.

Lcpk

Peak Level—is the highest instantaneous sound pressure level recorded during a
measurement interval. Unlike the maximum level, the peak is detected
independently of dosimeter settings for response rate or weighting.

 Under OSHA regulations, unprotected workers may not be exposed to peak

sound levels greater than 140 dB.

L

ASMN

Minimum sound level—The lowest sampled sound level during the measurement
interval allowing for the unit’s Response Time setting (Fast or Slow).

Lavg

Average sound level— (in dB) computed for a chosen time duration, based on a 4,
5, or 6 dB exchange rate. Lavg with a 3 dB exchange rate is referred to as Leq
(equivalent sound level). All sound levels at or above the threshold level are
averaged into the calculations relating to noise exposure. Lavg is typically calculated
with no threshold, with a threshold of 80 dB or with a threshold of 90 dB.

L

TWA

Time-weighted average—is the sound level (in dB) that is accumulated for any
time period but with its average level computed over an 8-hour period. TWA is
usually measured with A-weighting, Slow response, and a 5 dB exchange rate.

 All sound levels at or above the threshold level (cutoff level) are averaged into

the calculations relating to noise exposure. TWA is calculated with no cutoff, with
cutoff 1 (typically 80 dB), or with cutoff 2 (typically 90 dB).

 If the time period is less than 8 hours, the TWA will be less than the Lavg/Leq. If

the time period is more than 8 hours, the TWA will be more than the Lavg/Leq.

LAE

Sound Exposure Level (SEL) —The sound exposure level averages the sampled
sound over a one second period. Assuming the sampled run time to be greater than
one second, SEL is the equivalent one-second noise that would be equal in energy
to the noise that was sampled. SEL is typically measured using a 3 dB exchange
rate without a threshold. (LAE is not used by OSHA.)

Views on the Edge

Definitions of data log values and views

To set up the Edge and work with noise-level data, you will want to have a good understanding
of the terms listed in Table 3-1.

NOTE: The following table is based on A-weighted, slow measurements. Thus, if you choose

A or C-weighted with Fast or Slow response the measurement values will change on

the display (i.e., you selected sound pressure level with C-weighting with Fast
response, it will display as LCF.) For further details, please see “Edge measurement

descriptors/variants” in Table 3-2.

3: Setting-up the Edge via DMS

21

Views on the
EDGE

Explanation

Dose

Dose—Related to the Criterion Level, a dose reading of 100% is the maximum
allowable exposure to accumulated noise. For OSHA, 100% dose occurs for an
average sound level of 90 dB over an 8 hour period (or any equivalent exposure).
(Please see Glossary of Terms for more details, page 63).

UL

Upper Limit—is the amount of time that the sound level exceeds a preset level (the
Upper Limit).

Response
Level

(Fast, Slow)

Typically, noise is not constant. Using a response of Slow or Fast simply flattens the
noise fluctuation and makes the sound level easier to work with.

Slow: 1 second (1,000 milliseconds, or msec)
Fast: 0.125 second (125 milliseconds)

RT

Run Time—The overall time of your noise study.

Weighting
(A, C)

A and C weighting are types of frequency filters that cover the frequency range of

human hearing (20Hz to 20 kHz).

 “A” weighting: The “A” weighted filter attempts to make the dosimeter respond

closer to the way the human ear hears. It attenuates the frequencies below
several hundred hertz as well as the high frequencies above six thousand hertz.
“A” weighted measurements are often reported as dBA.

 “C” weighting: provides a fairly flat frequency response with only slight

attenuation of the very high and very low frequencies. “C” weighting is intended

to represent how the ear perceives sound at high decibel levels and is often

used as a “flat” response when LINEAR is not available. “C” weighted

measurements are often reported as dBC.

Memory storage symbol—
eg4: The eg4 model displays the total memory storage remaining in hours and

minutes. For example, if it displays the memory symbol 181:50 this represents
181 hours and 50 minutes of memory storage remaining on the dosimeter.

eg3: The eg3 model displays the memory by indicating the remaining number of

studies it will store into memory. For example, if the eg3 displays “50” this

indicates you can store 50 studies on the dosimeter. (Note: the difference is
because the eg3 model does not data log. This is an older model.)

Calendar symbol—The calendar symbol and calendar field displays the day-
month-year

Battery power clock symbol—The battery power clock symbol identifies the
number of hours and minutes of battery time remaining on the dosimeter.

Views on the Edge

Table 3-1: Dosimeter views and definitions

3: Setting-up the Edge via DMS

22

Descriptors

Variants

Lmax variants

Sound pressure level—is the basic measure of noise loudness, expressed in
decibels. (In DMS this is noted as “SPL”)

L

ASMX

Maximum sound level—is the highest sound level recorded during a
measurement interval with a particular response setting (Slow or Fast) and
weighting (A or C). L

MAX

is the highest value that is included in Lavg or dose

calculations.

 Under OSHA regulations, unprotected workers may not be exposed to

maximum sound levels greater than 115 dB, measured with a Slow response
rate.

Lcpk

Peak Level—is the highest instantaneous sound pressure level recorded during a
measurement interval. Unlike the maximum level, the peak is detected
independently of dosimeter settings for response rate or weighting.

 Under OSHA regulations, unprotected workers may not be exposed to peak

sound levels greater than 140 dB.

L

ASMN

Minimum sound level—The lowest sampled sound level during the
measurement interval allowing for the unit’s Response Time setting (Fast or

Slow).

Views on the Edge

Edge Measurement descriptors/variants

The following is an explanation of the Edge descriptors and equivalents for L

Table 3-2: Dosimeter measurement descriptors/variants

, Lmin, & Lpk.

MAX

3: Setting-up the Edge via DMS

23

A

B

C

Docking

Docking

Communicating & downloading data

By using your docking station, USB cable, software, and your dosimeter, you can quickly
communicate between the software and the dosimeter. There are two methods for
communicating which are:

 Send setup data: Enables you to configure your set-up parameters in TSI Detection

Management Software and download these parameters to the Edge.

 Retrieve data: You have the capability to retrieve the data from the dosimeter into DMS in

order to view and analyze your studies in DMS’ charts, graphs, and reporting functionality.

 How to connect your dosimeter to the computer

1. Dock the dosimeter on the EdgeDock1 (or 5) and turn on the dosimeter by pressing

the button.

2. Plug the USB cable into the computer. (See “A” in Figure 3-4).

3. Plug the opposite end into the docking station (See “B” and “C”).

NOTE: The docking station will be powered through the computer; thus, it is not

required to attach the charger adapter. If you wish to charge the dosimeter,
plug in the charger adapter. (See “Charging your dosimeter” for more
information.)

Figure 3-4: Communicating - connecting a docked Edge to a PC

3: Setting-up the Edge via DMS

24

Example of EdgeDock-5 with
Edge 4 selected in the first bay.

Customizing set-up parameters in DMS

4. For first time use of a docking station, Welcome to the found new hardware wizard
will appear (see Figure 3-5). Select No and press Next through the remaining wizard.
At the end of the wizard, press Finish.

 This will install the hardware components associated with your EdgeDock1

and/or EdgeDock5.

NOTE: If you have more than one EdgeDock1 or EdgeDock5, this wizard will

appear for each new dock which is connected to your PC.

Customizing set-up parameters in DMS

Figure 3-5: New Hardware wizard for Edge Dock

Customizing and saving set-ups are performed via DMS. The following sections discuss each
of the setup screens and explain how to save and send the parameters to the dosimeter(s).

NOTE: The following DMS settings apply to the eg4 model. If you are also using other models

such as the eg3/eg4 and have them docked in a 5-bay charger, they will appear in the
“Edge Bay Charger” tree section. If you are also using other models (eg5) and have
them docked in a 5-bay charger, they will appear in the “Edge Bay Charger” tree
section with a icon. To select Edge 5 models, first select the Model (on the left-

hand panel) and then click the Refresh button. The instruments are selected
by clicking in the checkbox(es).

3: Setting-up the Edge via DMS

25

Dosimeter settings
explained in the
Edge dosimeter
settings (below).

1

Customizing set-up parameters in DMS

c

Dosimeter setting

The Edge general settings are used to setup the instrument with basic parameters. The eg4 model
features two virtual dosimeters in one with two customized, user-defined settings. Refer to the Edge
dosimeter settings table below for an explanation of setup details.

1. Click on the Dosimeter tab from the Edge’s Instrument Configuration panel (see 1). To change
the dosimeter settings, follow one (or all) of the selection options below.

 Click on the checkbox to enable the dosimeter (LED) heartbeat, Dose indicator LED,

and/or the Meter 1/Meter 2 Threshold settings.

 Click in the circular button to select the response time (fast or slow), peak weighting (C or

Z), and/or RMS Weighting (A or C).

 To set the numeric fields either type in a value or use the arrows to enter appropriate

values for the Meter1/Meter 2 settings (threshold, upper limit, exchange rate, criterion level,
and RMS weighting).

2. When Meter 1 and Meter 2 settings are “enabled”, this will log (for eg4 model only) two different
setups simultaneously. Typically, users will set the meter 1 and meter 2 with different regulatory
or local standards (such as EU directive and OSHA).

3. To set the dosimeter settings, save and send to the Edge (for more details see “Saving and

sending/setting configurations”).

Figure 3-6: Dosimeter screen

3: Setting-up the Edge via DMS

26

Dosimeter settings for
the Edge

Name Field
*Note: refer to Glossary for more detailed information.

Heartbeat enable

When enabled (or checked), the LED will flash green while running and flash
amber when stopped.

Response

Either Slow Time Response or Fast Time Response is applied to the
measurements. (Typically Slow time response is used in the US market while
Fast is used in the EU communities.)

C-A enable

When enabled (or checked), C minus A will be calculated.

Projected Time

A selectable time parameter via the up/down arrows or type in a value. The
projected time value is used to make projected dose calculation for the dose
measurement.

Peak Weighting

Select either A, C or Z for the peak frequency weighting.

Dose indicator LED

When enabled (or checked), the LED will flash red when the dose value exceeds
the designated entered value.

Setup name

(Optional field) A setup name may be entered into the Meter 1 and/or Meter 2
fields. When set, it appears on the top of Edge’s display (example setup names:
OHSHA, MSHA, EU directive).

Threshold enable

When the checkbox is selected and a value is entered for meter 1 and/or meter 2,
the threshold is used to calculate Lavg, TWA, and Dose measurements.

Upper Limit

Select a UL dB level by the up/down arrows or by typing in a value. (Note: The
upper limit (UL) is a measurement setting in which the user selects a specific
decibel level. The UL value records the amount of time that the Sound level is at
or greater than the entered level.)

RMS Weighting

Select either A or C RMS Weighting. (Note: The RMS (root mean square) are
the results from the Edge with the response time and weighting settings taken
into account.)

Criterion Level

Select a Criterion level via the up/down arrow or by typing in a value. (Note:
Criterion level is the average SPL that will result in 100% dose over the criterion
time and is typically set by a regulatory agency such as OSHA, EU directive.)

Exchange Rate

Enter in (or select with up/down arrows) 3, 4, or 5 dB. ER refers to how sound
energy is averaged over time. (OSHA uses a 5 dB doubling rate while most of the
world uses 3 dB.)

Customizing set-up parameters in DMS

Edge dosimeter settings

Table 1-2: Dosimeter fields explained for the Edge

3: Setting-up the Edge via DMS

27

1

2

Customizing set-up parameters in DMS

Display setting

The display screen is used to customize the parameters which will appear on your Edge. It is

organized by two columns, the “Display position” and the “Item to Display” and includes a “Set
selected Items” selection/drop down box. The display position indicates the order of the parameter
(or item) which will appear on the display, while the “Item to display” designates the measurement

or parameter. The example/figure below displays the SPL, Max, Min, Lavg, TWA, Dose, UL, RT, and
battery time remaining parameters to appear on the display. (Note: There are up to 18 selectable
parameters. Off indicates no item will appear.)

1. Click on the Display tab from the Edge’s Instrument Configuration panel (see 1). To customize

the display, click on either the Display position (see 1) or the Item to Display field (see 2). The
field will be shaded in blue when selected.

2. Click on the drop-down box of the Set Selected Item field (see 3) and select a parameter (see 4).

3. Repeat these steps as needed to select each position.

NOTE: “OFF” indicates that no item/parameter is selected.

4. To set the display features (see 5), save and send to the Edge (for more details see “Saving and

sending/setting configurations” saving and sending configurations”.)

Figure 3-7: Edge display screen

3: Setting-up the Edge via DMS

28

1

3

Customizing set-up parameters in DMS

Security setting

The security setting is a type of “locking” feature (or secure run feature) that enables you to password

protect the instrument to prevent users from inadvertently terminating a study. Initially, this feature is
set through the software and turned on once in run mode by pressing run/stop key three consecutive
times. (To unlock, press run/stop key three consecutive times and then press power key.) To set this
feature, follow the steps below.

1. Click on the Security tab from the Edge’s Instrument Configuration panel (see 1). To enable, click

on the Enabled check box. (Ensure the specific Edge is selected and communicating to the
software. See “Communicating & downloading data” for more information.)

2. Next, select either Not Displayed (see 2) or Displayed (see 3) for the measurement visibility.

NOTE: If measurement visibility is set to “not displayed” then a padlock icon appears on the Edge

display. If displayed is selected, the measurements appear with a small padlock in the
header section of the display indicating the instrument cannot be stopped during a run while
in secure run mode.

3. Click the button to set the security setting (for more details, see “Saving and

sending/setting configurations”).

Figure 3-8: Edge security setting

3: Setting-up the Edge via DMS

29

Customizing set-up parameters in DMS

Auto Run setting

With the Edge auto run setting, you may program up to two auto start and auto stop configurations
when start date and duration parameters are enabled. This may be useful if you want to pre-set the
instruments to run and stop for a specific time period, such as a week-long study. See steps below to
enable.

1. Click on the Auto Run tab from the Edge’s Instrument Configuration panel (see 1) and click in

the Enable auto run mode checkbox (see 2).

2. To program Date 1, click in the Enabled checkbox and select a Start Date (by using the

calendar icon or type in a date). Select the Duration, by either typing in the time (designated in
hours, minutes, and seconds) or using the up/down arrows (see 3). (Repeat this step to setup a
second Auto run mode, except select Date 2. See 4.)

3. Click the button to set the auto run setting (for more details, see “Saving and

sending/setting configurations”).

NOTE: On the Edge, Power Off the instrument when the configuration is set in order to auto-

start the instrument.

Figure 3-9: Edge auto run screen

3: Setting-up the Edge via DMS

30

Customizing set-up parameters in DMS

Firmware update

Edge firmware updates are performed in DMS when the instruments are docked, communicating,
and the update key is selected. Please follow the steps below prior to updating your Edge(s).

NOTE: This feature enables you to update all of your docked Edges (when powered on and not in

run mode).

1. Click on the Firmware tab from the Instrument Configuration panel (see 1) and ensure to dock

the Edge (or Edges). Please read steps under “Firmware Update” prior to updating (see 2).

 Press button to refresh the docked instruments (if necessary).

2. Press the button and please wait until the software states that it is Done. (Example of the

message, See 3).

Figure 3-10: Edge firmware update screen

3: Setting-up the Edge via DMS

31

2

1

Customizing set-up parameters in DMS

Saving and sending/setting configurations

With the Edge, there are saved setup profiles used to quickly access and apply to The Edge(s).
Below explains how to save configuration settings in DMS and how to send/set to the instrument.

NOTE: If you want to only send the setup, please skip to step 3. Refer to this section as you setup

your instrument.

1. To save the Edge configuration in the software, click on a name in the Configuration Profile

Management panel (See 1).

NOTE: The name will be shaded a light gray when selected.

 To create a new profile name, click and type in a profile name. Click Save. (It will save

under the configuration profile management panel).

2. Click on the button (see 2) and type in a Name. Click Ok.

NOTE: This saves the configuration file in the software.

 Or click button and rename the setting by typing in a name. Click Ok.

3. To send to the instrument, select the (see 3).

Figure 3-11: Saving and sending Edge setups

3: Setting-up the Edge via DMS

32

Customizing set-up parameters in DMS

(This page intentionally left blank)

4: Running and operating your dosimeter

33

CHAPTER

4

Quick Help List: typical dosimetry session

1. Turn the dosimeter on and check your battery power.

2. Reset the dosimeter.

3. This will clear out all of the data history before your study begins to ensure you have sufficient

memory space on the Edge.

4. Set-up your study parameters via DMS.

5. Calibrate the dosimeter.

6. Attach the dosimeter for your personal noise study.

7. Press the Run/Stop button to start the study.

8. When you are ready to end your study, press the Run/Stop

button to stop the study.

9. Review your results either on the meter or download to DMS for further analysis

(graphs/charts, saving and printing).

Overview of running a study

4: Running and operating your dosimeter

The focus of this chapter is to discuss the procedures for running and operating the Edge and
includes positioning, calibrating, and viewing the Edge measurements.

Overview of running a study

The list below is a brief overview of the steps for running a study.

Figure 4-1: Quick help list for running a study

4: Running and operating your dosimeter

34

Positioning

Overview of running a study

Positioning the Edge on your shirt

Depending on what accessories you ordered with the Edge, you may have either clips on the top and
bottom of the dosimeter or some other type of mounting device. (Please refer to Appendix A,
“Contact/Service information”).

 How to attach the dosimeter

1. Clip the dosimeter on your shirt and ensure the microphone is positioned as high on your

shoulder as possible and away from your neck.

a. If the noise seems to come from one direction, place it on the shoulder and near the

noise source.

b. During monitoring, keep clothing from coming into contact with the windscreen to avoid

contaminating your results.

Figure 4-2: Positioning/Attaching the Edge

Windscreen and maintenance

Before measuring, ensure the windscreen is free from any accumulated dirt. If you ordered a kit (as
explained in Chapter 2), there are replacement windscreens in the carrying case for your
convenience. Please refer to Figure 6-1 for details on replacing the windscreen.

4: Running and operating your dosimeter

35

Battery indicator icon
When fully shaded, this
indicates full battery life.

Battery time remaining

Overview of running a study

Checking battery power

Typically, the life of the battery is approximately 60+ hours (see Appendix A for specific
specifications). The dosimeter can be charged at any time by using your EdgeDock.

There are two battery identifiers on the dosimeter which are the battery indicator icon and the battery
power clock (see Figure 4-3).

 Checking battery power

1. The battery indicator icon (located at the top right of your screen) gives an approximation of

battery life and is always present.

 If the battery indicator is half shaded, this illustrates you have approximately 30 hours of

battery life remaining.

 If low battery appears, less than 8 hours of run time is available.

2. Additionally, there is a battery time remaining measurement which identifies the number of
hours and minutes remaining on the dosimeter.

3. To view, press the up/down arrows ▲/▼. This will navigate your through the views of the
dosimeter.

NOTE: The battery time remaining measurement can be disabled from the view of the meter.

See Chapter 3 for explanation on changing the display.

Figure 4-3: Battery indicators

4: Running and operating your dosimeter

36

“CAL” flashes

Overview of running a study

Calibrating

TSI recommends you calibrate your dosimeter before you run your study(ies) and after your
study(ies) to ensure highly accurate measurement results. The steps below address how to calibrate
for either a pre or post calibration.

 Calibrating the dosimeter

1. Remove the windscreen from the dosimeter by unscrewing it (see Figure 6-1).

2. Ensure the Edge is turned on and in the stop mode (see “Turning on” and “Turning Off”).

3. Slide the Edge into the mouth of the calibrator.

NOTE: Ensure the adapter ring is inserted into the mouth of the calibrator before you slide

the Edge into the cavity.

4. Turn on the calibrator and ensure parameters are set to 114 dB and 1000 Hz. (See calibration

manual for operation details.)

Figure 4-4: Calibrating

5. “CAL” will flash on the display when detected.

6. Press the on/off enter button to trigger the calibration display.

7. To match the values on the calibration display, press repeatedly the up or down arrow in order

to select the exact output on the calibrator (i.e., 114 dB).

8. When you have selected the appropriate dB level, press the on/off enter button.

9. A shaded bar will appear loading your calibration information. Then a summary calibration

screen will appear indicating the dB level with date and time displayed.

10. To return to the measurement view screen, press the on/off enter .

11. To end the calibration steps, turn off the calibrator. Detach the dosimeter from the calibrator.

4: Running and operating your dosimeter

37

Edge Splash screen

Arrows and enter key
Indicates the valid keys are
selected

Checkmark icon

Is the selection to exit the
setup menu

Reset icon

Overview of running a study

Resetting the dosimeter

The Edge can be reset through the dosimeter keypad or via DMS. The steps below outline how to
reset your dosimeter.

 Reset

1. Ensure the meter is Off.

2. Turn the meter on by pressing the on/off enter button.

3. When the splash screen appears, press and hold the run/stop and on/off enter

buttons until the splash disappears.

Figure 4-5: Splash screen

4. The Setup menu appears on the Edge. Press the up or down arrow to select the reset icon

(symbol).

NOTE: Setup menu is used to reset the dosimeter, change the contrast, and return to the
main view.

Figure 4-6: Resetting the Edge from the keypad

5. Press and hold the on/off enter button.

6. A 3, 2, 1 countdown will appear, and then a shaded bar will appear indicating the dosimeter is

being reset.

7. Press the down arrow until the checkmark icon is selected (denoted by the arrows). Then,

press the on/off enter button to return to the measurement view screen.

4: Running and operating your dosimeter

38

Checkmark icon

Is the selection to exit the
setup menu

Contrast icon

Arrows and enter key

Indicates the valid keys are
selected

Overview of running a study

Setting contrast on dosimeter

 Contrast

1. Ensure the meter is Off.

2. Turn the meter on by pressing the on/off/enter button.

3. When the splash screen appears, press and hold the run/stop and on/off enter

buttons (see Figure 4-5 for splash screen).

4. The Setup menu appears on the Edge. Repeatedly press the arrow key until the Contrast

symbol is selected.

NOTE: Setup menu is used to reset the dosimeter, change the contrast, and return to the

main view.

Figure 4-7: Changing the contrast from the keypad

5. Next press the on/off enter button.

6. A number will appear on your display (i.e., 50). Press the up or down arrow to increase or

decrease the contrast of the Edge.

7. Press on/off enter button to accept the new contrast value.

8. To return to the measurement view screen, press the down arrow and press the on/off/enter

button.

4: Running and operating your dosimeter

39

Run indicator

Appears when running

Battery indicator

Flashing green LED
Indicates running

Measurements

 Use up/down arrow to

move through values.

 Views are customizable

via DMS setup.

Running studies

Running studies

With a couple pushes on the keypad buttons, you will be running and viewing your study (ies).
Following your study (ies), you can load the data/files into DMS to manipulate, analyze, save, and
create reports (See Chapter 5 for viewing your logged data in DMS).

Starting a run

 How to run a noise study

1. If your dosimeter is turned off, press the on/off enter button to power on.

2. Press and hold the run/stop button.
 A 3, 2, 1 countdown will appear.

3. When running, the following will appear:

 A run indicator will appear on the top-right side.
 The LED indicator will flash green (unless you disabled this in DMS.)

Figure 4-8: Display screen while running

4: Running and operating your dosimeter

40

Indicator Icon

Explanation

■

Stop—indicates the dosimeter is currently in the stop status (opposed to run).

►

Run—indicates the dosimeter is currently logging a study.

Battery charge status—when completely shaded in black, this indicates full

battery power. If half shaded, this represents ½ battery power

OL

Overload—will appear whenever the input signal exceeds the range of the
dosimeter.

Stopping a study

Stopping a study

While the dosimeter is running, you can end the study by pressing and holding the stop button.

 How to stop a noise study

1. While running, press and hold the run/stop button.
a. A 3, 2, 1 countdown will appear.
b. The stop indicator ■ will be shown in the display.

Indicators/Icons on the display

The Edge is equipped to notify you of operational/status updates. These indicators (or alert notices)
are located on the top right-hand side of the screen. Table 4-1 explains the function of each indicator.

Table 4-1: Indicators (i.e., run, stop, battery, and OL)

4: Running and operating your dosimeter

41

Measurement views on
the Edge

Viewing measurements on the display

Viewing measurements on the display

The up/down arrows on the keypad of the dosimeter enable you to move through the various
measurements. For specific information on the views of the Edge, please see “Views on the

Edge”).

 Viewing measurements

1. Press the or arrow. This will move you through the views on the display.

NOTE: If you enabled only one measurement to appear on the display, when you press the

up/down arrows it will not show any other measurement values. (To enable additional
measurement settings, see the “Edge Display Screen”.)

Figure 4-9: Measurement view on the Edge

Locking or securing your dosimeter during run

As explained previously under DMS set-up parameters, the security or lock feature is designed
to lock the meter during run to ensure the study will not be stopped unless the lock feature is
disabled. (Setting this feature is programmed via DMS. See “Security setting” for more details.)

4: Running and operating your dosimeter

42

Padlock icon

Secure all

Key indicator
Indicates dosimeter is locked
while running.

Viewing measurements on the display

Locking or Securing

 How to lock or secure

1. Turn the dosimeter on and press the run/stop button to begin logging your study.

2. To enable the lock, press run/stop button three consecutive times within one

second intervals.

 The Lock screen will appear.

Figure 4-10: Locking/Securing run

NOTE: If lock/secure run does not activate, check that locking is set-up on your dosimeter.

Unlocking

 How to unlock

1. To unlock, press run/stop button three consecutive times, within one second

intervals, and then press the on/off enter button.

a. If the padlock icon and the key indicator were on the screen, these will vanish and the

measurement view will appear along with the run indicator.

b. If you enabled the lock feature (with the key indicator showing and the measurement

view showing), then the key indicator will disappear.

2. To stop your study, press the on/off enter button and the 3, 2, 1 will display as it

ends the study.

a. To download and view your results in DMS, see Chapter 5.

5: Viewing your studies in DMS

43

CHAPTER

5

Viewing measurements on the display

5: Viewing your studies in DMS

The focus of this chapter is to discuss how to view your studies with the TSI Detection Management
Software (DMS). The first section explains how to retrieve your studies from the dosimeter, and the
subsequent sections will then walk you through viewing, organizing, and customizing your studies.

NOTE: You have the option of ten different languages in DMS including: Chinese (Simplified),

English, French, German, Italian, Korean, Portuguese, Japanese, Russian, and Spanish.

Downloading data

Loading your studies entails communicating, downloading the sessions/studies (files) and viewing
the files in the data finder page, charts and graphs, and/or report views.

 Downloading

1. Ensure DMS is downloaded.

 Install the software from the USB flash drive or visit our website at www.tsi.com.

2. Dock the dosimeter(s) and connect it to your PC using the USB cable.

Figure 5-1: Communicating between your PC and the Edge

3. Power on the Edge by pressing the button.

NOTE: The Edge will only download and communicate when stopped, as indicated by icon

on the top of the screen.

5: Viewing your studies in DMS

44

1 2 3

4

Noise
Dosimetry

Download button

Optional: click to view files
(sessions/studies) after download

Edge 3-4

EdgeDock-5 example

 Click in the Edge checkboxes to

download specific dosimeters

Edge

Download

Viewing measurements on the display

4. In DMS software’s start screen, choose .

Figure 5-2: DMS start screen

5. Select Noise Dosimetry (see 1), Edge (see 2), and Edge 3-4 (see 3) from the family panel.

6. Select the docked Edge (s) to download by clicking in the checkboxes by the EdgeDock-5

section (see 4).

Figure 5-3: Downloading with the Edge models eg3/eg4

7. Click button.

 In the status field, it will state download is successful.

5: Viewing your studies in DMS

45

Example of

data file in

recent view

Viewing measurements on the display

 Then, a clear the memory prompt will appear. Click yes to clear the memory or click no if you

want to save the data on the dosimeter.

8. The sessions (files) will load and post to the Data Finder page under Family: Noise Dosimetry

heading.

 Quick tip: click on the button and the data files will post directly under the specific

family. Click on the file and select either to view in charts and graphs.

Viewing data and data finder page

After the data is downloaded, it is stored and viewable in the data finder. With a quick double-click,
the information is viewable in customizable graphs and/or charts.

 Selecting and viewing data

1. In the Data Find page (see 1), select the Noise Dosimetry data (see 2) by clicking on either the

session/study

NOTE: You may need to expand to see the study data.

 Once selected, it will appear with a blue shading.

2. Optional: To reorganize the data displayed in the data finder columns, click drag and drop the

titles of the columns in different positions. To shrink/expand the columns, click and drag the
black column divider(s).

NOTE: These methods are similar to positioning/expanding in Microsoft® Excel® spreadsheet

program.

Figure 5-4: Recent downloaded data

5: Viewing your studies in DMS

46

Edge, logged data
chart displayed in
DMS report (scroll
through to view the
online report if
applicable).

Selected
Edge data

Analyze button

1

Quick Report button

Data headings (optional: drag, drop
and/or expand columns to view data)

2

Viewing measurements on the display

3. To view in Graphs and Tables, click on or buttons.

Report View

The button provides a quick link to view/print the Edge data. To customize the data,
refer to the next session, panel view page.

 Click to print the report.

Figure 5-5: Data Finder page with the downloaded data

Figure 5-6: Example of Edge Report in DMS

5: Viewing your studies in DMS

47

Configure

Active cursor

1 34

4

Viewing measurements on the display

Panel Layout View(charts/graphs)

When you are in the data finder page (see above), select either the Analyze button or double-click
on a session/study to view the data in charts and graphs as displayed in Figure 5-7. The
measurements and parameters will be displayed in charts and graphs which may be customized for
analysis and/or reporting purposes.

1. In the panel layout view page, it is divided into Work Items (see 1), Add panel (see 2), Arrange
Panels (see 3) and data panels (see 4).

 Work items (1)—select either the session or study (in order to view appropriate

measurement/parameter data).

 Add panel (2)—double-click on a chart/table type and it will appear as a panel on your screen.
 Arrange panels (3)—displays the order of the sessions/studies displayed in the panel section

of your screen.

 Data Panels (4)—used to view your measurement and/or parameters from your study. Note:

use the menu bar icons and/or configure icon to customize parameters.

Figure 5-7: Panel layout view (viewing the data in charts and graphs)

5: Viewing your studies in DMS

48

Viewing measurements on the display

Quick tips with panels (charts/graphs)

 To stretch the graph, click on one the corner’s edge of a chart or table and drag the mouse.

The graph will expand and widen (depending on how you drag your mouse).

 To move the graph, click drag and drop to the appropriate panel position.
 To change ranges, when clicking on either the x-axis or y-axis, click and drag the mouse until

the appropriate range is selected.

NOTE: It will span the numbers up or down depending on how you drag the mouse.

 To add labels, click on the add labels

icon. Right-click and select edit text to add note/label
on the chart. Type in text and press the Enter key (on your keyboard). To move the label, left­click and hold to drag to appropriate location on graph.

 To customize chart colors, click on the icon and using the properties box, select different

colors as needed.

 To customize x or y axis font type, click on or icons.
 To export data to .xls file, click on the export icon.
 To save a layout, right-click outside the tables/graphs area as displayed below.

Click Remember Setting.

49 6: Technical Support

CHAPTER

6

Alarm Enable

LED indicator: disable/enable

6: Technical Support

LED indicator: disable/enable

Follow the instructions below to turn off the LED indicator.

 To disable this feature, open DMS and select the Setup button. On the dosimeter tab,

under Dose% indicator LED uncheck the following:

 Alarm enable: Will disable the flashing red LED when the threshold entered exceeds the

designated value during run mode. (If checked, red LED will flash.)

 Heartbeat enable: Will disable the flashing green LED the dosimeter is running. (If

checked, a green LED will not flash.)

NOTE: For more information, see section on Dosimeter Settings.

6: Technical Support

50

Windscreen (see procedure 1)

Microphone (see procedure 2)

Replacing microphone and windscreen

Replacing microphone and windscreen

Attaching/Detaching

The Edge features a field replaceable microphone and a screw-on removable windscreen. TSI
Incorporated suggests that you replace the windscreen whenever dirt has accumulated on the
windscreen prior to measuring data.

NOTE: If you ordered an Edge kit, extra windscreen(s) will be included in your case.

Attaching/Detaching the windscreen and microphone

1. First, unscrew the windscreen by turning the red ring (not the foam!) in a counterclockwise

direction.

2. If you are replacing the windscreen, screw on a new windscreen in a clockwise direction

until it fits firmly.

3. To unscrew the microphone, turn the microphone in a counterclockwise direction until it is

removed.

4. To attach a new microphone, screw the microphone on clockwise until it fits tightly.
 The following diagram illustrates how to assemble these two devices.

Figure 6-1: Microphone and windscreen assembly

51 6: Technical Support

A

Hard Hat Attachment kit

A. Epaulette mount
B. Hard hat mount

B

Shoulder bolt

Hex wrench

Epaulette

Shoulder bolt

Hard hat mount attachment
(The two prongs slide into
the bottom cavity.)

Slide the two-sided prongs into
the hard-hat opening.

Hard Hat Attachment Kit

Hard Hat Attachment Kit

The following instructions explain how to assemble and attach the hard hat kit to a standard
hard hat.

1. Using a 3/32” hex wrench, twist the top shoulder bolt counterclockwise to loosen and

remove the bolt and the clip. Also, remove the bottom clip with the hex wrench. Once the
bottom clip is removed, place the shoulder bolt back into its place and tighten back up
with the hex wrench.

\

2. Place the epaulette mount (see “A” above) into the top bracket of the Edge. Then slide

the bolt into place and tighten with a hex wrench. Then, the epaulette mount snaps onto
the bottom shoulder bolt.

3. Slide the two prongs of the hard hat mount (see “B” above) underneath the epaulette

mount (see “A” above) until it clicks into place.

4. Taking the Edge with the assembled hard hat attachments, slide into the side of hard hat.

It will fit snuggly into the hard hat opening.

6: Technical Support

52

Hard Hat Attachment Kit

(This page intentionally left blank)

53 Appendix A

Housing

Plastic case with black, gray check background and red outlined buttons.

Size

3.5” long x 2.1” wide x .75” thick (without microphone)
(88 mm long x 53 mm wide x 19 mm thick)

Weight

2.5 oz. (less mounting device); (70.87 gr)

Life

Approximately 60+ hours of continuous operation at normal operation
under reference to environmental conditions when full capacity batteries
are installed.

Type

Lithium Polymer (Flat cell)

Memory capacity

180 hours

Operating

+14°F to + 122°F (-10°C to + 50°C)

Storage

-13°F to + 140°F (-25°C to + 60°C)

Humidity Range

0 to 95% Non-Condensing

APPENDIX

A

Standards

A: Specifications

**All specifications subject to change

Standards

Pending testing approvals on the following:

 ANSI S1.25, IEC61252 Standards for Personal Sound Exposure Meters.
 Lead Free (RoHS compliant).

Mechanical characteristics

Electrical characteristics

Battery

Environmental effects

The typical time interval needed to stabilize after changes in environmental conditions is 5 minutes
for each 10°C change.

Temperature

Appendix A

54

LED amber indicator

Indicates EdgeDock1 or EdgeDock5 is “powered on”. (Lower

of the two shown LEDs).

LED Red indicator and
LED Green indicator

Signifies status of charging. Flashing red indicates charging.
Solid green indicates charging is complete.

Size of EdgeDock1

2.75” x 2.75” x 2.2” (6.99 cm x 6.99 cm x 5.6 cm)

Size of EdgeDock5

12.75” x 2.2” x 2.75” (32.29 cm x 5.08 cm x 6.99 cm)

2.75”

2.75”

2.2”

12.75”

2.2”

2.75”

User Interface

User Interface

Display

Size: 128 X 64 graphic

Keypad

4 keys—up arrow, down arrow, run/stop, on/off enter

EdgeDock1 and EdgeDock5

EdgeDock1 and EdgeDock5 are powered by a 12-volt charger adapter with international plug
adapters. The backside of the Edge slides into the hook of the EdgeDock1 or EdgeDock5 with
the mounting clasps rotating to a 90 degree angle (which will rest on a table/work area).
Additionally, the EdgeDock1 (or EdgeDock5) are equipped with two single screw slots for wall
mounting purposes.

Physical attributes of EdgeDock1 and EdgeDock5

Appendix A

55

Displayed Data and
status indicators

SPL, Average value (Lavg or Leq), Maximum value (Lmx), Minimum
value (Lmn), Peak Value (Lpk), Exposure, Run Time, TWA, UL Time

Dosimeters

Two dosimeters at once (eg4), each with its own assignable profile
(via DMS only).

RMS Range

70 to 140 dB

RMS Weighting

A or C weighting

RMS Time Response

Fast or Slow

Exchange Rate (ER)

3 dB, 4 dB, or 5 dB

Peak Range

110 dB to 143 dB

Peak Weighting

C or Z weighting

Criterion Levels

70 to 90 dB in 1 dB increments

Threshold

70 to 90 db in 1 dB increments

Upper Limit (UL)

70 to 140 dB in 1 dB increments

Pre-calibration

When performed, valid prior to the start of the study.

Post-calibration

When performed, valid for the previous study.

Storage

Calibrations for a study are stored in the related study file.

Calibrator
requirement

Calibrations should be performed at 114 dB at 1 kHz.

Security

Key sequence protection through the keypad when running.

Auto-Run

May be programmed via DMS.

Logging (eg4 only)

The eg4 is a dual dosimeter with data logging which includes Lavg or
Leq (1/2), Max level, and Peak level.

Measurements

Measurements

Types

Measurement parameters

Calibration

Communications

The Edge communicates via the EdgeDock1 and/or the EdgeDock5. Communications is
supported via USB cable from the docking station to the PC.

Special functions

56 Appendix A

Analog Board

Edge Block Diagram

Edge Block Diagram

57 Appendix A
Edge Block Diagram (continued)

Edge Block Diagram (continued)

58 Appendix A

North America and Asia Pacific

Telephone: [phone] (USA);

[phone] (Outside USA)

Fax: [phone]
E-mail: [e-mail]

Europe, Middle East, and Africa

Telephone: [phone]

Fax: [phone]
E-mail: [e-mail]

North America and Asia Pacific

TSI Incorporated

1060 Corporate Center Drive
Oconomowoc, WI 53006-4828

Europe, Middle East, and Africa

TSI Instruments Ltd.

Stirling Road
Cressex Business Park
High Wycombe, Bucks
HP12 3ST
United Kingdom

Telephone: [phone] (USA);

[phone] (Outside USA)

E-mail: [e-mail]

Telephone: [phone]

E-mail: [e-mail]

Contact/Service information

Contact/Service information

This section gives directions for contacting TSI Incorporated for technical information and
directions for returning the Edge 4 Personal Noise Dosimeter for service.

Technical Support Contacts

If you have any difficulty setting or operating the instrument, or if you have technical or
application questions about this system, contact TSI’s Technical Support.

Service Contact Information

If your instrument does not operate properly, or if you are returning the instrument for service,
visit our website at http://rma.tsi.com for a Return Material Authorization, or contact Customer
Service.

59 Appendix A

Contact/Service information

Returning for Service

Visit our website at http://rma.tsi.com and complete the on-line “Return Merchandise
Authorization” form or call TSI at 1-800-680-1220 (USA) or [phone], or
001 651 490-2860 (International) for specific return instructions.

Customer Service will need the following information:

 The instrument model number
 The instrument serial number
 A purchase order number (unless under warranty)
 A billing address

 A shipping address

Use the original packing material to return the instrument to TSI. If you no longer have the
original packing material, seal off any ports to prevent debris from entering the instrument and
ensure that the display and the connectors on the instrument front and back panels are
protected. This instrument is very fragile and must be packed in a manner appropriate for a
precision instrument.

60 Appendix A

Warranty

Warranty

(For country-specific terms and conditions outside of the USA, please visit www.tsi.com.)

Seller warrants the goods, excluding software, sold hereunder, under normal use and service as described in the
operator's manual, to be free from defects in workmanship and material for 12 months, or if less, the length of time
specified in the operator's manual, from the date of shipment to the customer. This warranty period is inclusive of any
statutory warranty. This limited warranty is subject to the following exclusions and exceptions:

a. Hot-wire or hot-film sensors used with research anemometers, and certain other components when indicated in

b. Pumps are warranted for hours of operation as set forth in product or operator’s manuals;

c. Parts repaired or replaced as a result of repair services are warranted to be free from defects in workmanship

d. Seller does not provide any warranty on finished goods manufactured by others or on any fuses, batteries or

e. This warranty does not cover calibration requirements, and seller warrants only that the instrument or product is

f. This warranty is VOID if the instrument is opened by anyone other than a factory authorized service center with

g. This warranty is VOID if the product has been misused, neglected, subjected to accidental or intentional damage,

The foregoing is IN LIEU OF all other warranties and is subject to the LIMITATIONS stated herein. NO OTHER

EXPRESS OR IMPLIED WARRANTY OF FITNESS FOR PARTICULAR PURPOSE OR MERCHANTABILITY IS

MADE. WITH RESPECT TO SELLER’S BREACH OF THE IMPLIED WARRANTY AGAINST INFRINGEMENT, SAID

WARRANTY IS LIMITED TO CLAIMS OF DIRECT INFRINGEMENT AND EXCLUDES CLAIMS OF CONTRIBUTORY

OR INDUCED INFRINGEMENTS. BUYER’S EXCLUSIVE REMEDY SHALL BE THE RETURN OF THE PURCHASE
PRICE DISCOUNTED FOR REASONABLE WEAR AND TEAR OR AT SELLER’S OPTION REPLACEMENT OF THE

GOODS WITH NON-INFRINGING GOODS.

TO THE EXTENT PERMITTED BY LAW, THE EXCLUSIVE REMEDY OF THE USER OR BUYER, AND THE LIMIT OF
SELLER'S LIABILITY FOR ANY AND ALL LOSSES, INJURIES, OR DAMAGES CONCERNING THE GOODS
(INCLUDING CLAIMS BASED ON CONTRACT, NEGLIGENCE, TORT, STRICT LIABILITY OR OTHERWISE) SHALL
BE THE RETURN OF GOODS TO SELLER AND THE REFUND OF THE PURCHASE PRICE, OR, AT THE OPTION
OF SELLER, THE REPAIR OR REPLACEMENT OF THE GOODS. IN THE CASE OF SOFTWARE, SELLER WILL
REPAIR OR REPLACE DEFECTIVE SOFTWARE OR IF UNABLE TO DO SO, WILL REFUND THE PURCHASE
PRICE OF THE SOFTWARE. IN NO EVENT SHALL SELLER BE LIABLE FOR LOST PROFITS, BUSINESS
INTERRUPTION, OR ANY SPECIAL, INDIRECT, CONSEQUENTIAL OR INCIDENTAL DAMAGES. SELLER SHALL
NOT BE RESPONSIBLE FOR INSTALLATION, DISMANTLING OR REINSTALLATION COSTS OR CHARGES. No
Action, regardless of form, may be brought against Seller more than 12 months after a cause of action has accrued.
The goods returned under warranty to Seller's factory shall be at Buyer's risk of loss, and will be returned, if at all, at
Seller's risk of loss.

Buyer and all users are deemed to have accepted this LIMITATION OF WARRANTY AND LIABILITY, which contains
the complete and exclusive limited warranty of Seller. This LIMITATION OF WARRANTY AND LIABILITY may not be
amended, modified or its terms waived, except by writing signed by an Officer of Seller.

Service Policy

Knowing that inoperative or defective instruments are as detrimental to TSI as they are to our customers, our service
policy is designed to give prompt attention to any problems. If any malfunction is discovered, please contact your
nearest sales office or representative, or call TSI’s Customer Service department at 1-800-874-2811 (USA) or +001
[phone] (International).

specifications, are warranted for 90 days from the date of shipment;

and material, under normal use, for 90 days from the date of shipment;

other consumable materials. Only the original manufacturer's warranty applies;

properly calibrated at the time of its manufacture. Instruments returned for calibration are not covered by this
warranty;

the one exception where requirements set forth in the manual allow an operator to replace consumables or
perform recommended cleaning;

or is not properly installed, maintained, or cleaned according to the requirements of the manual. Unless
specifically authorized in a separate writing by Seller, Seller makes no warranty with respect to, and shall have no
liability in connection with, goods which are incorporated into other products or equipment, or which are modified
by any person other than Seller.

61 Appendix B

APPENDIX

B

Glossary of Terms

B: Glossary of Terms

Background Noise, effects of

Background noise can cause considerable error in measurement when its level is high relative to the
level of a noise source of interest. If you can make measurements both with and without the
contribution of a noise source of interest, you can mathematically subtract the background noise from
the combined measurement, yielding the level of the noise source of interest alone. The accuracy of
this determination improves as the difference between the two measurements increases.

To remove background noise

1. Obtain a measurement that includes the contribution of the noise source of interest (the

combined measurement).

2. Make a second measurement under exactly the same conditions as in Step 1 but without the

presence of the noise source of interest (the background noise measurement).

3. Determine the decibel difference between these two measurements.

4. Find that difference on the x-axis of the figure below.

5. Find the point on the curve directly above this difference.

6. Read the corresponding value on the y-axis for that point (the correction value).

7. Subtract the correction value from the combined measurement.

Example: Measurements with and without the noise source of interest are 91 dB and 90 dB,
respectively. For a difference of 1 dB, the background noise correction value is 7 dB. Therefore, the
level for the noise source of interest without the noisy background is 84 dB.

62 Appendix B
Glossary of Terms

Combining Noise sources

Because sound levels are measured in decibels they cannot be simply added together. A sound level
of 90 dB plus 90 dB does not yield 180 dB but rather 93 dB. The procedure for mathematically
determining a combined level of sound from independent measurements made for two noise sources
is given below.

1. Make independent measurements for both noise sources, where each exists without the

presence of the other.

2. Determine the decibel difference between these two measurements.

3. Find that difference on the x-axis of the figure below.

4. Find the point on the curve directly above this difference.

5. Read the corresponding value on the y-axis for that point (the Amount to Add).

6. Add this value to the larger of the two measurements.

Example: Independent measurements for the two noise sources yielded levels of 90 dB and 91 dB.
For a difference of 1 dB, the correction factor taken from the curve below is 2.5 dB. Therefore the
combined level when these two sound sources are present in the measurement area at the same time

93.5 dB.

Crest Factor

Crest Factor is the ratio of the instantaneous peak value of a wave to its RMS value. This is a

performance specification of a meter’s ability to process signals that have peaks that are substantially

higher than their RMS averages.

Criterion Level (CL)

Criterion level is the average SPL that will result in a 100% dose over the Criterion time, usually
8 hours. The Criterion Level is typically set by a regulating agency, such as OSHA, and is not usually
applicable for community noise monitoring. Examples: OSHA mandates the Criterion Level (maximum
allowable accumulated noise exposure) to be 90 dB for 8 hours. For an 8-hour sample, an average
level (Lavg) of 90 dB will result in 100% dose. For the OSHA HEARING CONSERVATION
AMENDMENT, the “action level” is 85 dB for 8 hours. This would result in a 50% dose reading. Note
that the Criterion Level has not changed. (If the Criterion Level were changed to 85 dB then an 8-hour
average of 85 dB would result in 100% dose.)

63 Appendix B
Glossary of Terms

Criterion Time

The time over which the Criterion Level is established, generally 8 hours.

Decibel (dB)

Sound Level Meters use the decibel as the unit of measure known as Sound Pressure Level (SPL).
SPL uses the ratio between a reference level of 20 microPascals (.00002 Pascals) and the level being
measured. SPL = 20 log (measured level/reference level). Example: the SPL for 1 Pascal is 20 log
(1 Pascal/.00002 Pascal) = 94 dB 20 microPascals (.00002 Pascals) is considered the average
threshold of hearing. A whisper is about 20 dB. A normal conversation is typically from 60 to 70 dB,
and a noisy factory from 90 to 100 dB. Loud thunder is approximately 110 dB, and 120 dB borders on
the threshold of pain.

Dose

Related to the Criterion Level, a dose reading of 100% is the maximum allowable exposure to
accumulated noise. For OSHA, 100% dose occurs for an average sound level of 90 dB over an 8 hour
period (or any equivalent exposure). By using a TWA reading rather than the average sound level, the
time period is no longer explicitly needed. A TWA of 90 dB is the equivalent of 100% dose. The dose
will double (halve) every time the TWA increases (decreases) by the Exchange Rate. Example:
OSHA uses an Exchange Rate of 5 dB. Suppose the TWA is 100 dB. The dose would double for each
5 dB increase over the Criterion Level of 90 dB. The resulting dose is therefore 400%. If the TWA was
instead equal to 80 dB then the dose would halve for each 5 dB below the Criterion Level. The
resulting dose would be 25%. When taking noise samples less that the full workday, dose is an easy
number to work with because it is linear with respect to time. Example: If a 0.5-hour sample results in
9% dose and the workday is 7.5 hours long, then the dose for the full workday would be a 135% dose
(7.5 / 0.5 x 9%). This is computed making the assumption that the sampled noise will continue at the
same levels for the full 7.5-hour workday.

Exchange Rate (ER – also known as the Doubling Rate)

Exchange rate refers to how the sound energy is averaged over time. Using the decibel scale, every
time the sound energy doubles, the measured level increases by 3 dB. This is the 3 dB exchange rate
that most of the world uses. For every increase of 3 dB in the time weighted average, the measured
DOSE would double. Some organizations such as OSHA in the U.S. have argued that the human ear
self-compensates for changing noise levels and they felt that the 3 dB exchange rate should be
changed to more closely match the response of the human ear. OSHA currently uses a 5 dB
exchange rate, which would mean that the reported DOSE would double with every 5 dB increase in
the time weighted average. The exchange rate affects the integrated reading Lavg, DOSE, and TWA
but does not affect the instantaneous sound level.

Field Calibration (vs. Factory Calibration), pre-calibration, post-calibration

To be sure the dosimeter is functioning within specified tolerance limits, it should be returned to the
factory annually for a factory recalibration. To verify that the dosimeter is measuring properly during
normal use, field calibrations should be performed. Pre-calibration is performed prior to any data
being recorded by the dosimeter. During a pre-calibration, the dosimeter level may be adjusted to
match the calibrator output level. Post-calibration is a simple verification that the instrument has
remained in calibration throughout the measurement period.

64 Appendix B
Glossary of Terms

Free field setting (microphone)

Measurements made in an area without sound reflections, diffractions and absorptions caused by
nearby objects (including the operator). Sound waves are free to spread out continuously, like ripples
on a pond, without reflection. When making free field measurements with a dosimeter set up for use
as a sound level meter, the microphone is typically pointed directly at the sound source.

Hearing Conservation (HC)

The Occupational Safety and Health Administration (OSHA) and Mine Safety and Health
Administration (MSHA) provide regulatory standards for hearing conservation programs. In addition,
the American Conference of Governmental Industrial Hygienists (ACGIH) provides industrial
standards for hearing conservation programs. http://www.osha.gov/, http://www.msha.gov/,

http://www.acgih.org/home.htm.

Hertz (Hz)

Unit of vibration frequency in cycles per second.

Lavg (Average Level)

Lavg is the average sound level measured over the run time. This becomes a bit confusing when
thresholds are used. Any sound below the threshold is not included in this average. Remember that
sound is measured in the logarithmic scale of decibels therefore the average cannot be computed by
simply .adding the levels and dividing by the number of samples. When averaging decibels, short
durations of high levels can significantly contribute to the average level. Example: Assume the

threshold is set to 80 dB and the Exchange Rate is 5 dB (the settings of OSHA’s Hearing

Conservation Amendment). Consider taking a one-hour noise measurement in an office where the
A-weighted sound level was typically between 50 dB and 70 dB. If the sound level never exceeded
the 80 dB threshold during the one hour period, then the Lavg would not indicate any reading at all. If
80 dB was exceeded for only a few seconds due to a telephone ringing near the instrument, then only
those seconds will contribute to the Lavg resulting in a level perhaps around 40 dB (notably lower
than the actual levels in the environment).

L

EP,D

Daily personal noise exposure level.

65 Appendix B
Glossary of Terms

Leq (Equivalent Level)

The true equivalent sound level measured over the run time. The term Leq is functionally the same
as Lavg except that it is only used when the Exchange Rate is set to 3 dB and the threshold is set to
none.

Logging

(Also called Data Logging.) Certain measurements, such as average level (Lavg) and maximum level
(max), can be recorded by the dosimeter at regular intervals. For example: A dosimeter is set to log
Lavg and max at one minute logging intervals. If the dosimeter runs for one hour, then it would log
60 Lavg results and 60 max levels. You would be able to see the average and maximum levels for
each minute of the one hour run time.

Maximum Level (L

MAX

)

The highest sampled sound level during the instrument’s run time allowing for the unit’s Response

Time setting (Fast or Slow).

Measurement Range

The decibel range within which the unit’s measurements are valid.

Minimum Level (Lmin)

The lowest sampled sound level during the instrument’s run time allowing for the unit’s Response

Time setting (Fast or Slow).

Noise Floor

In a “Perfectly Quiet” room, the electrical noise produced by the microphone is approximately 35 dB

on A-weighting and 45 dB on C-weighting. These levels are known as the Noise Floor of the
instrument. The Noise Floor can cause inaccurate measurements at low measurement levels.
Measurements must always be at least 5 dB above the Noise Floor to be valid. Therefore, the lowest
valid measurements of the dosimeter are approximately 40 dB on A-Weighting and 50 dB on

C-Weighting.

Peak Level

Peak is the highest instantaneous sound level that the microphone detects. Unlike the Max Level, the
peak is detected independently of the unit’s Response Time setting (Fast or Slow). Example: The
peak circuitry is very sensitive. Test this by simply blowing across the microphone. You will notice that
the peak reading may be 120 dB or greater. When taking a long-term noise sample (such as a typical
8-hour workday sample for OSHA compliance), the peak level is often very high. Because brushing
the microphone over a shirt collar or accidentally bumping it can cause such a high reading, the user
must be careful of placing too much emphasis on the reading.

66 Appendix B
Glossary of Terms

PEL (Permissible Exposure Level)

The A-weighted sound level at which exposure for a Criterion Time, typically eight hours, accumulates
a 100% noise dose.

Projected Time

The variable amount of time used to make a projected dose calculation from an actual dose
measurement.

Random incidence (microphone)

This only applies to Class/Type 1 microphones. Measurements made in an area where sound waves
are coming from all directions, including reflections and diffractions. When the dosimeter is being
used as a sound level meter in an area where reflections and diffractions from nearby objects are
present, use the Random Incidence Corrector with the microphone, and angle the microphone at
approximately 70 degrees. Most personal noise dosimetry applications do not require the random
incidence corrector, since they are not measured with a Class/Type 1 microphone.

Response Time

The response determines how quickly the unit responds to fluctuating noise. Fast has a time constant
of 125 milliseconds. Slow has a time constant of 1 second. Example: Typically, noise is not constant.
If you were to try to read the sound level without a response time, the readings would fluctuate so
much that determining the actual level would be extremely difficult. Using a response of slow or fast
simply smooths the noise fluctuation and makes the sound level easier to work with. While the terms
slow and fast have very specific meanings (time constraints), they work very much as you would
expect. The fast response would result in a more fluctuating sound level reading than would the slow
response. The OSHA regulations require the slow response.

RMS (Root Mean Square)

The RMS voltage of a signal is computed by squaring the instantaneous voltage, integrating over the
desired time, and taking the square root. Simply put, the RMS values are the results from the
dosimeter with the response time and weighting settings taken into account.

SEL/Lxe (Sound Exposure Level)

The sound exposure level averages the sampled sound over a one second period. Assuming the
sampled run time to be greater than one second, SEL is the equivalent one-second noise that would
be equal in energy to the noise that was sampled. SEL is typically measured using a 3 dB exchange
rate without a threshold. SEL is not used by OSHA. Example: Suppose you wanted to measure in a
location next to railroad tracks, which also happened to be in the takeoff path of an airport. A train
passes by taking 10 minutes with an average sound level of 82 dB. A jet passes overhead taking
45 seconds with an average level of 96dB. Which of these events results in more sound energy? You
can answer the question by comparing their SEL readings, which compress each event into an
equivalent one-second occurrence. SEL for the train = 109.7 dB, SEL for the jet = 112.5 dB.

67 Appendix B
Glossary of Terms

Threshold

The threshold affects the Lavg, TWA, and Dose measurements. All sound below the threshold is
considered nonexistent noise for the averaging and integrating functions. The threshold does not
affect measurements in the sound level mode. OSHA uses two different thresholds. The original
Occupational Noise Exposure Standard (1971) used a 90 dB threshold and called for engineering
controls to reduce the noise levels if the eight-hour TWA was greater than 90 dB. The Hearing
Conservation Amendment (1983) uses an 80 dB threshold and calls for a hearing conservation
program to be put in place if the eight-hour TWA exceeds 85 dB (50% dose). The Hearing
Conservation Amendment is the more stringent of the two rulings and is what most US industrial
users are concerned with. Example: With an 80 dB threshold, suppose you placed a 79 dB calibrator
on the unit for a period of time. Because all of the noise is below the threshold, there would be no
average (you can think of it as an average of 0 dB). If the calibrator were 80 dB instead, then the
average would be 80 dB. On histogram printouts, typically 1 minute (or other specified increment)
averages are printed. Because real noise fluctuates, it is quite possible to have an average level
below the threshold. This also applies for the overall Lavg.

TWA (Time Weighted Average)

The time weighted average always averages the sampled sound over an 8-hour period. TWA starts at
zero and grows. The TWA is less than the Lavg for a duration of less than eight hours, exactly equal
to the Lavg at eight hours, and grows higher than Lavg after eight hours. TWA represents a constant
sound level lasting eight hours that would result in the equivalent sound energy as the noise that was
sampled. Example: Think of TWA as having a large 8-hour container that stores sound energy. If you
run a dosimeter for 2 hours, your Lavg is the average level for those 2 hours - consider this a smaller
2-hour container filled with sound energy. For TWA, take the smaller 2-hour container and pour that
energy into the larger 8 hour TWA container. The TWA level will be lower. Again, TWA is ALWAYS
based on the 8-hour container. When measuring using OSHA’s guidelines, TWA is the proper number
to report provided that the full work shift was measured. Example: If the work shift is 6.5 hours long
then measure for the entire 6.5 hours. TWA is the correct level to report to OSHA. It does not have to
be modified.

68 Appendix B
Glossary of Terms

Weighting (A, C, Z, etc.)

“A”, “B”, “C”, “Z” and LINEAR are the standard weighting networks available. These are frequency
filters that cover the frequency range of human hearing (20 Hz to 20 kHz). “A” weighting is the most
commonly used filter in both industrial noise applications (OSHA) and community noise regulations.
“A” weighted measurements are often reported as dBA. The “A” weighted filter attempts to make the
dosimeter respond closer to the way the human ear hears. It attenuates the frequencies below
several hundred hertz as well as the high frequencies above six thousand hertz. “B” weighting is

similar to “A” weighting but with less attenuation. The “B” weighting is very seldom, if ever, used. The
“C” weighting provides a fairly flat frequency response with only slight attenuation of the very high and
very low frequencies. “C” weighting is intended to represent how the ear perceives sound at high
decibel levels and is often used as a “flat” response when LINEAR is not available. “C” weighted

measurements are often reported as dBC. “Z” is zero weighting, with no weighting across the
frequency range of
human hearing.
LINEAR is thought of
as having a flat
frequency response
curve over the entire
measurement
frequency range.
LINEAR is most
commonly found on
upper model sound
level meters and is
typically used when
performing octave band filter analysis.

Upper Limit (UL)

A type of measurement parameter setting in which the user selects a certain decibel level. The
dosimeter will then record the amount of time that the sound level was at or greater than the preset
level. This time is then recorded as “UL Time”

Windscreen

A windscreen is a covering for the microphone that reduces disturbances caused by wind and direct
contact with other surfaces. The windscreen is placed over the microphone when taking
measurements to help prevent false high readings due to wind blowing across the microphone or
objects (hair, clothing, etc.) brushing against the microphone. The windscreen will also help protect
the microphone from dust and debris.

69 Appendix C





%dt

)ER/()CLLS(

2

RTIME

0

TC

100

DOSE







%

RTIME

tPr

DOSE

hours

Prd 



%

RTIME

TC

DOSE

hours 8

Prd 





dB)RTIME(2

01.3/LS

2

logER

AVG

L

2

logdt



 

APPENDIX

C

Measurement equations

C: Measurement equations

The following equations are used in the Edge calculations. Some of the terms used in these equations
are explained in Table B-1 while others are explained above in the “Glossary of Terms” section.

Appendix C

70

Measurement equations

(This page intentionally left blank)

71 Index

INDEX

A

Attaching

the Edge.............................................................. 34

B

Background Noise, effects of

Defined................................................................ 61

Battery

Checking ............................................................. 35

Battery charge status ............................................... 40

Battery indicator icon ............................................... 35

eg3 ............................................................................. 6

Memory storage .................................................. 21

eg4 ............................................................................. 6

Memory storage .................................................. 21

eg4 model ................................................................ 55

Exchange Rate

Defined ................................................................ 63

Export data ............................................................... 23

F

Free field setting (microphone)

Defined ................................................................ 64

C

Calibrate your meter................................................. 36

Calibration

Defined................................................................ 63

Charging

Battery................................................................. 11

Combining Noise sources

Defined................................................................ 62

Communicating

Edge Dock .......................................................... 11

Crest Factor

Defined................................................................ 62

Criterion Level (CL)

Defined................................................................ 62

Criterion Time

Defined................................................................ 63

D

Decibel (dB)

Defined................................................................ 63

Docking station ......................................................... 23

Components ....................................................... 12

Dose

Defined................................................................ 63

Doubling Rate

Defined................................................................ 63

Download ................................................................. 23

E

Edge

Positioning .......................................................... 34

Edge Dock

New hardware wizard ......................................... 24

EdgeDock1 ............................................................... 43

EdgeDock1 and EdgeDock5 .................................... 23

H

Hearing Conservation

Defined ................................................................ 64

Heartbeat ................................................................. 49

Hertz

Defined ................................................................ 64

I

international contacts ............................................... 58

L

Lavg

Defined ................................................................ 64

LED indicator

Flashing amber light ............................................. 9

Flashing green light .............................................. 9

Lep,d

Defined ................................................................ 64

Leq

Defined ................................................................ 65

Lmin

Defined ................................................................ 65

Loading your studies ................................................ 43

Locking ..................................................................... 42

About ................................................................... 41

Logging .................................................................... 55

Defined ................................................................ 65

M

Maximum Level

Defined ................................................................ 65

Measurement Range

Defined ................................................................ 65

Memory storage symbol ........................................... 21

Index

72

Model

eg3 ........................................................................ 6

eg4 ........................................................................ 6

Mount the docking station ........................................ 15

N

Noise Floor

Defined................................................................ 65

O

Options menu ..................................................... 37, 38

Overload ................................................................... 40

P

packing instructions ................................................. 58

Peak Level

Defined................................................................ 65

PEL

Defined................................................................ 66

Power

Turn off.................................................................. 9

Turn on.................................................................. 8

Projected Time

Defined................................................................ 66

Q

QSP-II

Heartbeat enabled .............................................. 49

Threshold enabled .............................................. 49

R

Random incidence (microphone)

Defined................................................................ 66

Reset ........................................................................ 37

Reset the meter ........................................................ 37

Response Time

Defined................................................................ 66

Retrieve data ............................................................ 23

returning for service ................................................. 58

RMS

Defined................................................................ 66

Run indicator ............................................................ 39

Running a study

Overview ............................................................. 33

S

Securing run mode ................................................... 42

SEL

Defined ................................................................ 66

service

international contacts .......................................... 58

Sound pressure .......................................................... 3

Splash screen ............................................................ 8

Standards ................................................................... 3

Stop mode ................................................................ 40

Symbol

Battery power clock ............................................ 21

Calendar ............................................................. 21

memory storage .................................................. 21

T

technical contacts ..................................................... 58

Threshold

Defined ................................................................ 67

Threshold enabled ................................................... 49

TWA

Defined ................................................................ 67

U

unlock mode ............................................................. 42

Unlocking ................................................................. 42

Upper Limit (UL) ....................................................... 68

USB cable ................................................................ 23

V

Views ........................................................................ 19

W

Weighting (A, C, Z, etc.)

Defined ................................................................ 68

Windscreen

Defined ................................................................ 68

USA Tel: [phone]
UK Tel: [phone]
France Tel: [phone]
Germany Tel: [phone]

India Tel: [phone]
China Tel: [phone]
Singapore Tel: [phone]

TSI Incorporated – Visit our website www.tsi.com for more information.

P/N 053-644 Rev. J ©2018 TSI Incorporated Printed in U.S.A.