Larson Davis HVM100 User manual

Model HVM100
Human Vibration Meter
Manual

IHVM100.01 Rev K
Larson Davis HVM100
Manual

Copyright
Copyright 2006-2015 by PCB Piezotronics, Inc. This manual is copyrighted, with all rights reserved.
The manual may not be copied in whole or in part for any use without prior written consent of PCB
Piezotronics, Inc.
ICP®is a registered trademark of PCB Group, Inc. Blaze®is a registered trademark of PCB
Piezotronics, Inc. Switchcraft®is a registered trademark of Switchcraft, Inc. LEMO®is a registered
trademark of LEMO SA. LEMO USA®is a registered trademark of INTERLEMO HOLDING USA.
All other trademarks are property of their respective owners.
Disclaimer
The following paragraph does not apply in any state or country where such statements are not
agreeable with local law:
Even though PCB Piezotronics, Inc. has reviewed its documentation, PCB Piezotronics Inc. makes no
warranty or representation, either expressed or implied, with respect to this instrument and
documentation, its quality, performance, merchantability, or fitness for a particular purpose. This
documentation is subject to change without notice, and should not be construed as a commitment or
representation by PCB Piezotronics, Inc.
This publication may contain inaccuracies or typographical errors. PCB Piezotronics, Inc. will
periodically update the material for inclusion in new editions. Changes and improvements to the
information described in this manual may be made at any time.
Record of Serial Number and Purchase Date
HVM100 Purchase Date________ Serial Number: ___________
Recycling
PCB Piezotronics, Inc. is an environmentally friendly organization and encourages our customers to
be environmentally conscious. When this product reaches its end of life, please recycle the product
through a local recycling center or return the product to:
PCB Piezotronics, Inc.
Attn: Recycling Coordinator
1681 West 820 North
Provo, Utah, USA 84601-1341
where it will be accepted for disposal
Product Warranty
For warranty information, refer to our Terms and Conditions of Sale on our website at
www.larsondavis.com/TermsConditions.aspx.

HVM100 Manual ii-i
Table of Contents
Chapter 1 Introduction 1-1
About This Manual.................................................................................................1-1
Accessories .............................................................................................................1-3
Standard Accessories .........................................................................................1-3
Optional Accessories..........................................................................................1-3
Transducers ...................................................................................................1-3
Calibrator.......................................................................................................1-3
Cables............................................................................................................1-3
Adaptors........................................................................................................1-4
Cases..............................................................................................................1-4
Power Supply ................................................................................................1-4
Software ........................................................................................................1-4
Selecting the Proper Transducer.............................................................................1-5
Triaxial Accelerometers................................................................................1-7
Single Axis Accelerometers..........................................................................1-9
Modes of Operation ..............................................................................................1-10
Frequency Weighting Selections ..........................................................................1-10
Band Limiting Filters.......................................................................................1-11
Chapter 2 Getting Started 2-1
Switching HVM100 On..........................................................................................2-1
Menu Navigation ....................................................................................................2-1
Alpha Numeric Menu Function .........................................................................2-2
Indexed Menu Function .....................................................................................2-3
Key Board Functions ..............................................................................................2-4
Setup Key................................................................................................................2-4
Mode Selection ..................................................................................................2-5
Averaging Time .................................................................................................2-5
Time History Settings....................................................................................2-6
Store Time..........................................................................................................2-7
Auto Store ..........................................................................................................2-7
2nd History.........................................................................................................2-8
Vibration Mode Weighting.....................................................................................2-8
Hand Arm Mode Weighting ...................................................................................2-9
Whole Body Weighting Mode................................................................................2-9

ii-ii HVM100 Manual
Chapter 3 Tools Menu 3-1
Tools Key................................................................................................................3-1
Accelerometer....................................................................................................3-1
Display Units......................................................................................................3-2
Integration..........................................................................................................3-3
Sum Factor X,Y, Z.............................................................................................3-4
AC/DC Output ...................................................................................................3-4
AC/DC Output Settings.................................................................................3-7
Baud Rate...........................................................................................................3-8
Handshaking..................................................................................................3-8
Print History Selection.......................................................................................3-8
Erase All Files....................................................................................................3-9
Erase Setups.....................................................................................................3-10
Header 1,2,3.....................................................................................................3-11
Language..........................................................................................................3-12
Date and Time..................................................................................................3-13
Chapter 4 Range Menu 4-1
Range Key...............................................................................................................4-1
Auto Range ........................................................................................................4-1
Gain X, Y, Z.......................................................................................................4-2
Cal Level............................................................................................................4-2
Calibrate X, Y, Z................................................................................................4-3
Sensitivity X, Y, Z .............................................................................................4-4
Reference Acceleration......................................................................................4-5
Hand Arm Exposure Action Value....................................................................4-5
Chapter 5 Printing 5-1
Printing to a Windows Hyperterminal....................................................................5-1
Chapter 6 Storing and Recalling Data Files and Setups 6-1
STORE Key............................................................................................................6-1
Storing a Setup...................................................................................................6-1
Storing a File......................................................................................................6-3
Temporary Data Storage - File Register 00 .......................................................6-4
Data Storage - File Registers 01 thru 99............................................................6-5
Preserving the File Counter At Power-Off ........................................................6-5
Recall Key...............................................................................................................6-6
Recalling a Setup ...............................................................................................6-6

HVM100 Manual ii-iii
Recalling Setup Register S0 at Power-On .........................................................6-7
Recalling a File ..................................................................................................6-8
Chapter 7 Taking Measurements/ Viewing Data on the HVM100 7-1
Run/Stop Key..........................................................................................................7-1
Overload Detection ............................................................................................7-1
Under-Range Indicator (?) .................................................................................7-2
Run-Interrupted Indicator (!) .............................................................................7-2
History Key.............................................................................................................7-3
Viewing Time History with 2nd History turned on...........................................7-5
Data Key .................................................................................................................7-6
Chapter 8 Powering the HVM100 8-1
Checking the Remaining Battery Voltage .........................................................8-1
Installing New Batteries..........................................................................................8-1
Using External Power.............................................................................................8-4
Chapter 9 Connections on the HVM100 9-1
Serial Interface Port ................................................................................................9-2
Pinout.................................................................................................................9-2
Cables Used........................................................................................................9-3
Transducer Connection...........................................................................................9-4
Pinout.................................................................................................................9-4
External Power Connection ....................................................................................9-5
Pinout.................................................................................................................9-5
Larson Davis Adapter ........................................................................................9-5
AC/DC Output Connector..................................................................................9-6
Pinout.................................................................................................................9-7
Chapter 10 Chapter 10 Adaptor Resonances 10-1
Conclusion ............................................................................................................10-1
Mechanical............................................................................................................10-1
Measurements.......................................................................................................10-3
Frequency Response Measurements................................................................10-3
ADP080A + SEN041.......................................................................................10-3
ADP081A + SEN041.......................................................................................10-5
ADP082A + SEN041.......................................................................................10-6

ii-iv HVM100 Manual
Appendix A Specifications A-1
General Characteristics..........................................................................................A-1
Type Precision..............................................................................................A-1
Effects of Temperature.................................................................................A-2
Effects of Humidity......................................................................................A-2
Limits of Temperature and Humidity...........................................................A-2
Effects of Magnetic Fields ...........................................................................A-2
Effects of Mechanical Vibrations.................................................................A-2
Stabilization Time........................................................................................A-2
Data Storage.................................................................................................A-3
Data Communications..................................................................................A-3
Digital Display .............................................................................................A-3
Real-time Clock/Calendar............................................................................A-3
Run-time Clock............................................................................................A-3
Power Supply ...............................................................................................A-3
Dimensions/Weight......................................................................................A-3
Declaration of Conformity................................................................................A-4
Outputs..............................................................................................................A-5
Transducer Electrical Impedance......................................................................A-5
Direct Input ..................................................................................................A-5
ICP®Input....................................................................................................A-5
Charge Input.................................................................................................A-6
Functions Measured..........................................................................................A-6
Reference Acceleration.....................................................................................A-6
Reference Calibration Frequency......................................................................A-7
Reference Calibration Vibration.......................................................................A-7
Frequency Weighting Curves ................................................................................A-8
Fa (Flat 0.4 Hz to 100 Hz)............................................................................A-8
Fb (Flat 0.4 Hz to 1260 Hz) Frequency Weighting......................................A-9
Fc (Flat 6.3 Hz to 1260 Hz), Wh, and Ws Frequency Weighting..............A-12
Wm, Wc, and Wd Frequency Weightings..................................................A-13
We, Wj, and Wk Frequency Weighting.....................................................A-15
Wg Frequency Weighting (Defined in BS6841:1987)...............................A-17
Wm (Whole Body) Frequency Weighting .................................................A-18
Typical Measurements Ranges .......................................................................A-20
Vibration - Fa.............................................................................................A-20
Vibration - Fb, Fc, Ws................................................................................A-21
Hand Arm - Wh..........................................................................................A-22

HVM100 Manual ii-v
Whole Body - Wm .....................................................................................A-23
Whole Body - Wc.......................................................................................A-24
Whole Body - Wd, We...............................................................................A-25
Whole Body - Wg ......................................................................................A-26
Whole Body - Wb, Wj, Wk........................................................................A-27
Appendix B Glossary B-1
Table of equations..................................................................................................B-1
RMS Acceleration........................................................................................B-1
RMS Acceleration in Decibels.....................................................................B-1
Allowed Exposure Time...............................................................................B-2
Energy Equivalent RMS Acceleration.........................................................B-2
Running RMS Acceleration LINEAR..........................................................B-2
Running RMS Acceleration EXPONENTIAL ............................................B-3
Vibration Dose Value...................................................................................B-3
Maximum Transient Vibration Value..........................................................B-3
Minimum Transient Vibration Value...........................................................B-3
Long Term Maximum Peak .........................................................................B-3
Short Term Maximum Peak.........................................................................B-4
Long Term Crest Factor...............................................................................B-4
Short Term Crest Factor...............................................................................B-4
Summed Instantaneous Acceleration...........................................................B-4
Appendix C Serial Interface Commands C-1
Setup and Query Commands .................................................................................C-1
Syntax for setup commands..............................................................................C-1
Syntax for Query commands.............................................................................C-2
System Parameters (Q’s and S’s)...........................................................................C-2
Mode Specific Parameters ................................................................................C-3
Read Data Commands ...........................................................................................C-9
Read Time History Commands............................................................................C-10
Control Commands..............................................................................................C-12
Appendix D Frequency Response Curves D-1
Appendix E Miscellaneous Information E-1
DC Output Calibration...........................................................................................E-1
AC/DC Outputs......................................................................................................E-3
DC Output.........................................................................................................E-3
AC Output.........................................................................................................E-4

ii-vi HVM100 Manual
Typical Measurement Ranges for Hand-Arm and Whole Body Measurements ... E-5
ICP®Accelerometers ........................................................................................E-5
Typical Measurement Ranges for General Purpose Vibration Measurements...... E-7
ICP Accelerometers ..........................................................................................E-7
Appendix F Serial Number Backup F-1
Setting Serial Number Backup.......................................................................... F-1
Serial Number Reset ......................................................................................... F-1
Failure of Serial Number Reset......................................................................... F-2

HVM100 Manual Introduction 1-1
CHAPTER
1Introduction
Thank you for purchasing the Human Vibration Meter from
Larson Davis. The HVM100 is a powerful but small vibra-
tion measurement tool. This Handheld vibration analyzer
will allow a variety of applications to be performed includ-
ing; Whole Body Vibration analysis, Hand-Arm Vibration
analysis, and general purpose vibration analysis.
This full featured vibration analyzer features 3 input
channels, a sum channel, a variety of frequency weighting
and band limiting settings, single and double integration,
displayed data in a variety of units, and independent AC or
DC outputs for all 3 channels simultaneously.
We invite you to read this manual to obtain the best results
from your HVM100.
About This Manual
This manual has 9 chapters and 5 appendices covering the
following topics:
Chapter 1 - Introduction
In this chapter we will discuss the functionality and
capabilities of your HVM100. We will also go into detail
with regards to frequency weightings and screen and menu
functionality.
Chapter 2 - Getting Started
This chapter will describe in detail the functionality and
selections contained in the Setup menu.
Chapter 3 - The Tools Menu
This chapter will describe in detail the functionality and
selections contained in the Tools menu.

1-2 HVM100 Manual
Chapter 4 - The Range Menu
This chapter will describe in detail the functionality and
selections contained in the Range menu. This includes
calibration of the HVM100.
Chapter 5 - Printing
This chapter will describe how to download data from the
HVM100.
Chapter 6 - Storing and Recalling Data Files and
Setups
This chapter will describe in detail how to store data and
setup information in the HVM100’s on-board memory.
Chapter 7 - Taking Measurements/Viewing Data on
the HVM100
This chapter will describe in detail how to use the Run/Stop
key to take measurements, and how to view that data on the
display of the HVM100.
Chapter 8 - Powering the HVM100
This chapter will describe the two ways in which to power
the HVM100.
Chapter 9 - Connections on the HVM100
This chapter will describe all of the external connectors on
the HVM100.
Chapter 10- Adaptor Resonances
This chapter will describe the frequency response function
data for the ADP08XA Adaptors.
Appendix A - Specifications
Appendix B - Glossary
Appendix C - I/O Commands
Appendix D - Frequency Response Curves
Appendix E - Miscellaneous Information
Appendix F - Serial Number Backup

HVM100 Manual 1-3
Accessories
Selection of the proper accessories for use with your
HVM100 is one of the most important functions you can
perform. The transducer is especially critical to obtaining
good results.
Standard Accessories
The HVM100 is delivered with the following standard
accessories:
•UserManual
• Batteries, 2 x AA, IEC Type LR6
Optional Accessories
Transducers • SEN020 to SEN022 (Accelerometers, 3 axis ICP)
• SEN023 to SEN025 (Accelerometers, single axis ICP)
• SEN026 (3 axis ICP,palm accelerometer)
• SEN027 (Accelerometer, seat pad)
• SEN040F (Accelerometer, 3 axis, 2 - 5 kHz, ICP)
• SEN041F (Accelerometer, 3 axis, 2 - 5 kHz, ICP)
Calibrator • 394C06 (Hand-held accelerometer calibrator)
Cables • SEN020-CBL to SEN022-CBL (3 axis accelerometers
including cables)
• SEN023-CBL to SEN025-CBL (single axis
accelerometers including cables)
• SEN026-CBL (3 axis ICP,palm accelerometer including
cable)
• SEN027-CBL (Cable and seat pad accelerometer)
• SEN040F-CBL (Accelerometers, 3 axis, 2 - 5 kHz, ICP,
including cables)
• SEN041F-CBL (Accelerometers, 3 axis, 2 - 5 kHz, ICP,
including cables)
• CBL006 (Cable, serial computer, DB9S-mDIN08)

1-4 HVM100 Manual
• CBL120 (Cable, 3 x 10-32 male to 4-pin LEMO®
female)
• CBL121 (cable, 3 x BNC male to 4-pin LEMO female)
• CBL124 (Cable, AC/DC Output, 3 X BNC to
Switchcraft®)
• CBL125 (Cable, Mini 4-pin to 4-pin LEMO female)
• CBL158 (Cable, 4-pin Microtech to 4-pin LEMOmale)
Adaptors • ADP060 (Adapter, hand accelerometer)
• ADP061 (Adapter, handle accelerometer)
• ADP062 (Adapter, clamp accelerometer)
• ADP063 (Adaptor, palm accelerometer)
• ADP064 (HVM100 adapter kit)
• ADP080A (Adapter, hand accelerometer)
• ADP081A (Adapter, handle accelerometer)
• ADP082A (Adapter, clamp accelerometer)
• ADP084A (Vibration adaptor kit including ADP080A,
ADP081A, ADP082A and ADP063)
• 080A09 (Adaptor, probe tip with 10-32 connector)
• 080A17 (Adaptor, triaxial mounting)
• 080B16 (Adaptor, triaxial mounting, for SEN024 and
SEN025 with 5-40 thread)
Cases • CCS020 (HVM100 hard shell carrying case)
• CCS028 (Soft case with belt clip for HVM100
Power Supply • PSA027 (Power supply, 90-264 VAC to 12 VDC)
Software • Blaze®software (SWW-BLAZE-HVM) for setup,
control and high speed data download
• HVManager software permits both users and
manufacturers of vibrating equipment to create PC-based
vibration data bases containing data measured using an
HVM100 Human Vibration Meter
• DNA (Data, Navigation and Analysis) software for
instrument control, high speed data download, data
streaming with real-time data display on PC, advanced
data graphic presentations and powerful report
generation features

HVM100 Manual 1-5
• HVM Programmer software, available from Larson
Davis, can be used to programs the languages and update
the firmware when new versions are available for the
HVM100.
Selecting the Proper Transducer
There are several important considerations when selecting a
transducer to perform your measurements. The first decision
that must be made is what type of transducer to use.
There are two general categories of accelerometers, ICP®
and Charge.
•ICP
® accelerometers are also called “Voltage Mode” or
“Low impedance” and may be known by various other
vendor trade names. ICP is PCB’s registered trademark
which stands for “Integrated Circuit Piezoelectric” and
identifies PCB sensors which incorporate built-in, signal
conditioning electronics. The built-in electronics serve to
convert the high impedance charge signal that is
generated by the piezoelectric sensing element to a
usable low impedance voltage signal which can be
readily transmitted over ordinary 2 wire or coaxial cables
to any voltage readout or recording device. The low
impedance signal can be transmitted over long cable
distances and used in dirty field or factory environments
with little signal degradation.
NOTE: The HVM100 has built-in ICP®
power supplies and charge amplifiers.
This will allow the HVM100 to interface
directly with ICP or charge transducers,
and eliminates the need for external sig-
nal conditioning.
• Charge mode sensors output a high impedance, electrical
charge signal that is generated by the piezoelectric
sensing element. This signal is extremely sensitive to
corruption from environmental influences. To conduct
accurate measurements, it is necessary to condition this
signal to a a low impedance voltage before it can be input
to a readout or recording device. A charge amplifier or
in-line charge converter is generally used for this
purpose.
The final way to use the input of the HVM100 is through the
direct input. This would require the use of some kind of
external signal conditioning unit such as an external source
of ICP power, or an external charge amplifier.

1-6 HVM100 Manual
The next item to consider is the sensitivity of the transducer.
The sensitivity of the accelerometer will depend on the
application being performed. If the application is a high
vibration level application, a low sensitivity should be
selected. For low vibration level applications a high
sensitivity accelerometer should be used.
NOTE: Transverse sensitivity is also
something to be considered. Transverse
sensitivity is defined as: The unwanted
output signal of a motion sensor when
subjected to motion perpendicular to the
sensitive axis-usually expressed as a per-
cent of the normal axis sensitivity. For
example if you are using a tri-axial
accelerometer and place an input signal
on the Z axis, your X axis could also be
reading a level even though there is
really no x-axis signal present.
The resonant frequency of the transducer should also be
considered. The resonant frequency is defined as the
frequency at which the structure will readily vibrate. For
accelerometers, there is one frequency where the
accelerometer will vibrate much easier than at other
frequencies. At this point, the reading will be very high, and
could overload the input of the HVM100. However, for most
of the recommended accelerometers, the resonant frequency
is well above the upper limit of the HVM100, and will
subsequently be masked out by the low pass filter on the
HVM100. If the resonant frequency becomes an issue, it is
recommended that an external mechanical filter be used.
Frequency range is the next thing to take into consideration.
Most recommended accelerometers will have a frequency
range sufficient for use with the HVM100. See the
frequency response tables (appendix A) and graphs
(appendix D) for more information on the HVM100’s
frequency response.
The last thing to consider is temperature, humidity, and other
physical agents, such as mounting surface, mass and
environment. The mass of the accelerometer should ideally
be no more that 1/50 of the mass of the object being
measured. A ratio of as little as 1/10 is acceptable in extreme
circumstances. The affect of these elements should always
be considered when choosing a transducer. Please also be
aware of the different methods of mounting an
accelerometer and the effects of each of those methods on
the measured data.
The following is a selection from the PCB catalog listing the
characteristics of a transducer. Please note the items that we
have discussed and note where they appear in a transducer
specification

HVM100 Manual 1-7
Triaxial Accelerometers .
Specification Unit SEN020 SEN21F SEN026
Voltage Sensitivity mV/g 1 10 10
Frequency Range (+/-5%) Hz 0.5 to 5,000 0.5 to 2,500 1 to 9,000
Frequency Range (+/-10%) Hz 0.3 to 6,000 0.5 to 12,000
Mounted Resonant Frequency kHz 25 25 25
Measurement Range +/-g pk 1,500 500 500
Broadband Resolution (1 Hz to 10
kHz) g rms 0.005 0.0005 0.0002
Shock Limit +/-g pk 7,000 7,000 10,000
Operating Temperature Range oF [oC] -65 to +250 [-54 to
+121] -65 to +250 [-54 to +121] -65 to +250 [-54 to +121]
Amplitude Linearity % +/1 +/1 +/1
Transverse Sensitivity % 555
Strain Sensitivity g/ 0.001 0.001
Excitation Voltage VDC 20 to 30 20 to 30 18 to 30
Constant Current mA 2 to 20 2 to 20 2 to 20
Output Impedance ohms <100 <100 <200
Output Bias VDC 8 to 12 8 to 12 7 to 11
Discharge Time Constant sec 1.0 to 2.0 .4 to 1.2 1.0 to 3.5
Sensing Element Type Ceramic Ceramic Ceramic
Element Configuration Structure Shear Shear Shear
Electrical Connector type/location 4-Pin/side 4-Pin/side 4-Pin/side
Housing material/sealing Titanium/Hermetic Titanium/Hermetic Titanium/Hermetic
Mounting Thread size 10-32 Female 5-40 Male 10-32 Female

1-8 HVM100 Manual
.
Specification Unit SEN027 SEN040F SEN041F
Voltage Sensitivity mV/g 100 1 10
Frequency Range (+/-5%) Hz 0.5 to 1,000 2 to 4,000 2 to 4,000
Frequency Range (+/-10%) Hz
Mounted Resonant Frequency kHz 27 55 55
Measurement Range +/-g pk 10 5,000 500
Broadband Resolution (1 Hz to 10
kHz) g rms 0.002 0.03 0.008
Shock Limit +/-g pk 2,000 10,000 10,000
Operating Temperature Range oF [oC] +14 to +122 [-10 to
+50] -65 to +250 [-54 to +121] -65 to +250 [-54 to +121]
Amplitude Linearity % +/1 +/2.5 +/1
Transverse Sensitivity % 555
Strain Sensitivity g/
Excitation Voltage VDC 6.5 to 30 18 to 30 18 to 30
Constant Current mA 0.3 to 10 2 to 20 2 to 20
Output Impedance ohms <500 <200 <200
Output Bias VDC 2.8 to 4.5 7 to 11 7 to 11
Discharge Time Constant sec 1.0 to 3.0 1.5 to 3.0 .3 to 1.0
Sensing Element Type Ceramic Ceramic Ceramic
Element Configuration Structure Shear Shear Shear
Electrical Connector type/location Integral cable/side 1/4-28 4-Pin/side 1/4-28 4-Pin/side
Housing material/sealing Titanium/Hermetic Titanium/Hermetic Titanium/Hermetic
Mounting Thread size 10-32 Female 5-40 Female 5-40 Female

HVM100 Manual 1-9
Single Axis Accelerometers .
About the HVM100
The HVM100 is a powerful, all digital, vibration analyzer. It
features simultaneous 3 channel measurements, small
lightweight design, easy to read display, portability utilizing
2 AA batteries, 115.2 kbps RS-232 interface, three modes of
Specification Unit SEN022 SEN024 SEN025
Voltage Sensitivity mV/g 100 10 10
Frequency Range (+/-5%) Hz 0.5 to 5,000 1 to12,000 1 to 10,000
Frequency Range (+/-10%) Hz 0.3 to 6,000 0.7 to 18,000 0.3 to 12,000
Mounted Resonant Frequency kHz 25 50 35
Measurement Range +/-g pk 50 500 50
Broadband Resolution (1 Hz to 10
kHz) g rms 0.0001 0.0005 .00016
Shock Limit +/-g pk 7,000 10,000 5000
Operating Temperature Range oF [oC] -65 to +176 [-54 to
+80] -65 to +250 [-54 to +121] -65 to +200 [-54 to +93]
Amplitude Linearity % +/1 +/1 +/1
Transverse Sensitivity % 555
Strain Sensitivity g/ 0.001 0.006 0.005
Excitation Voltage VDC 20 to 30 1 to 30 1 to 30
Constant Current mA 2 to 20 2 to 20 2 to 20
Output Impedance ohms <200 <100 <300
Output Bias VDC 8 to 12 8 to 12 8 to 12
Discharge Time Constant sec 1 to 3 .4 to 1.2 .4 to 1.2
Sensing Element Type Ceramic Ceramic Ceramic
Element Configuration Structure Shear Shear Shear
Electrical Connector type/location 4-Pin/side 10-32 10-32
Housing material/sealing Aluminum/Epoxy Titanium/Hermetic Titanium/Hermetic
Mounting Thread size 10-32 Male 5-40 Male 5-40 Male

1-10 HVM100 Manual
operation: Hand-Arm, Whole Body, and Vibration, and the
capability to display and print text in a variety of languages.
Modes of Operation
The HVM100 is divided into three modes of operation. The
standard mode is the vibration mode. This is the mode
included with the instrument. The other two modes are
optional modes. The Optional modes are Hand-Arm and
Whole Body. Each of these modes feature different
frequency weighting selections as outlined later in this
chapter.
Frequency Weighting Selections
NOTE: The Hand-Arm and Whole body
modes are separately purchased options.
These options and the frequency weight-
ings associated with these options will
not be available unless they are pur-
chased.
To accommodate the multiple operating modes of the
HVM100, 13 different frequency weighting filters are
available. The following table describes the frequency
weighting options available in each of the operating modes.
To select the frequency weighting for a particular mode, see
the section in this manual titled Setup Key.
The Hand-Arm mode and the Whole body mode frequency
weighting curves are defined in ISO 8041:2005. The Wg
Mode Frequency Weighting
Vibration Ws (Severity)
Fa (0.4 Hz to 100 Hz)
Fb (0.4 Hz to 1250 Hz)
Fc (6.3 Hz to 1250 Hz)
Hand Arm Wh
Whole Body Wm
Wb
Wc
Wd
We
Wg
Wj
Wk

HVM100 Manual 1-11
frequency weighting curve is defined in British Standard
6841:1987.
Band Limiting Filters
In addition to defining the frequency weightings for Hand-
Arm and Whole Body, ISO 8041:2005 also defines a band-
limiting filter to be used with each of the frequency
weightings. Each band-limiting filter is a combination of a
high-pass and low-pass 2nd order Butterworth filter, 12 dB
per octave attenuation, with - 3 dB corner frequencies at the
frequencies listed in table 3 below. When a frequency
weighting is selected in the HVM100 Hand-Arm mode, or
Whole Body mode, the HVM100 automatically places both
the weighting filter and the appropriate band-limiting filter
in the signal path.
Weighting Band-Limiting Filter
Wh6.3 to 1250 Hz
Wm,Wc, Wd, We, Wj, Wk0.4 to 100 Hz
Wm, Wg 0.8 to 100 Hz