Delta OHM HD2070 User Manual

The quality level of our instruments is the result of a continuous product development. This can lead to
differences between what is written in this manual and the tool that you purchased. We cannot completely
rule out errors in the manual, we apologize for this inconvenient.
The data, pictures and descriptions, contained in this document, cannot be legally enforced. We reserve the
right to make changes and corrections without notice.

HD2070

ENGLISH

REV. 1.1

2014, 11th June

- 2 -

Vibration Analyzer

HD2070

- 3 -

CONNECTORS AND KEYBOARD

The tool is endowed with keyboard with 13 keys, six connectors on the top and three connec­tors on the bottom. On the top there is also the memory card slot.
With reference to the figure at page 2 there are:

1 Slot for SD memory card with a maximum size of 2GB.
2 4 poles LEMO-B type connector for the connection of a triaxial or monoaxial

accelerometer with

integrated electronics (type IEPE or compatible).

3 6 poles LEMO-B type connector for the analog outputs (LINE) of the 3 accelerometric channels.
4 LEFT arrow key on the keypad: in the graphic mode it moves left the cursor or the two active cur-

sors (blinking). In VLM mode it allows to scroll the VLM_1, …, VLM_4 screens. In the spectrum mode,
it allows to switch from acceleration viewing to speed and displacement viewings.

5 CURSOR key on the keypad: in graphic mode it allows to select one of the two cursors or both of

them. Holding pressed the CURSOR key for at least 2 seconds when the third-octave spectrum (op-

tion HD2070.O1 “Spectral Analysis”) is displayed, the limit acceleration curve tracking is activated.
6 HOLD key: it temporarily stops the display update.
7 MENU key: it allows to access the configuration menu and the programs list. With the same key, the

menu is exited to go back to the measure mode.

8 REC (recording) key: in combination with START / STOP / RESET, it activates the continuous data

recording in the memory. If it is hold pressed for at least 2 seconds, it is possible to memorize what

it is displayed as single record or to start the vocal recording.
9 PAUSE/CONTINUE key: to put in pause mode the integrated measures. From PAUSE mode, press

the same key to start again the integrated measures. In PAUSE mode, the measures are reset if the

START / STOP / RESET key is pressed.
10 UP arrow key: in menu mode, it selects the previous row or increases the selected parameter. In

VLM screen, it adjusts the boundaries of the horizontal bar. In graphical mode it decreases the initial

and final levels of the vertical scale; in this way, the graph is moved upward.
11 LEFT arrow key: in menu mode, it is used to edit the parameters with attribute. In VLM screen, it

changes the measure unit. In graphic mode, it compresses the vertical scale.
12 MiniDin type connector for RS232C serial port. For the connection to a PC RS232 port or to the

HD40.1 printer, it is necessary to use the adequate null-modem serial cable (HD2110CSNM code),

provided with a D-sub 9 poles connector.
13 Male connector for external power supply (∅ 5.5mm-2.1mm socket). It requires a

9…12Vdc/300mA power supply. The power supply positive pole must be connected to the central pin.
14 USB connector type B to connect the vibration analyzer to the USB port of a PC using a standard

USB cable with type A and B connectors (CP22 code).
15 DOWN arrow key: in menu mode, it selects the subsequent row or decreases the selected parame-

ter. In VLM screen, it changes the limits of the horizontal bar. In graphic mode, it increases the initial

and final levels of the vertical scale; in this way, the graph is moved downward.
16 RIGHT arrow key: in menu mode, it is used to edit the parameters with attribute. In graphic mode,

it expands the vertical scale. In the VLM screen, it changes the measure unit.
17 ENTER key: it confirms the input of the data or the modification of a parameter.

18 START/STOP/RESET key: if pressed in STOP mode, it starts the measurements (RUN mode). In

RUN mode, it stops the measurements. If pressed in PAUSE mode, it resets the values of the inte-

grated measures like Aeq, MAX/MIN levels, etc ...
19 CHN key: it selects the three measuring channels CH1, ..., CH3 (circular scrolling).

20 MODE key: it selects in a circular sequence the different instrument visualizing modes: VLM, timing

profile, octave or third-octave spectra (option) , distribution of probability and percentile levels (op-

tion HD2070.O2).
21 ON/OFF key: to turn on and shutdown the instrument.

22 RIGHT arrow key on keypad: it moves right the cursor or the two active cursors (blinking). In VLM

mode, it allows to scroll the VLM_1, …, VLM_4 screens. In the spectrum mode (option), it allows to

switch from acceleration viewing to speed and displacement viewings.
23 3.5 mm jack connector for the connection of a microphone for vocal recordings.
24 4 poles LEMO-00 type connector for the trigger output.
25 3.5 mm jack for the connection of headphones.

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CERTIFICATO DI CONFORMITÀ DEL COSTRUTTORE

MANUFACTURER’S CERTIFICATE OF CONFORMITY

rilasciato da

issued by

DELTA OHM SRL STRUMENTI DI MISURA

DATA

2014/06/11

DATE

Si certifica che gli strumenti sotto riportati hanno superato positivamente tutti i test di
produzione e sono conformi alle specifiche, valide alla data del test, riportate nella
documentazione tecnica.

We certify that below mentioned instruments have been tested and passed all production tests,
confirming compliance with the manufacturer's published specification at the date of the test.

Le misure effettuate presso un Laboratorio di Taratura Accredia sono garantite da una
catena di riferibilità ininterrotta, che ha origine dalla taratura dei campioni di prima linea
del Laboratorio presso l’istituto metrologico nazionale.

Measurements performed in an Accredia Calibration Laboratory are guaranteed by a uninter­rupted reference chain which source is the calibration of the Laboratory first line standards at the
national metrological institute.

Tipo Prodotto:

Vibration Analyzer

Product Type:

Analizzatore di vibrazioni

Nome Prodotto:

HD2070

Product Name:

DELTA OHM SRL

35030 Caselle di Selvazzano (PD) Italy

Via Marconi, 5

Tel. [phone] r.a. - Telefax +39.049635596

Cod. Fisc./P.Iva IT03363960281 - N.Mecc. PD044279

R.E.A. 306030 - ISC. Reg. Soc. 68037/1998

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INSTRUMENT OVERVIEW

Block Diagram of HD2070

Block Diagram of the tool

The block diagram represents the main elements of the HD2070 vibration analyzer.

Measure channels

HD2070 has three input channels polarized with direct current at 25V. It is possible to

connect accelerometers with an amplifying integrated electronics IEPE (or similar) type that
needs a maximum current of 2mA. It’s possible to connect to the RIGHT input a tri-axial

type accelerometer or up to three monoaxial accelerometers.

The amplified electrical signal of the three channels is sent to the LINE output.

The instrument

The amplified signal of the three channels is converted into digital samples through as

many 25-bit A/D converters and digitally elaborated by two DSP.

The weighted levels and the related spectra of each channel are then transferred from

the DSP to the microprocessor that manages the display and the storage.

The microprocessor supervises all the instrument processes: the management of the ca­libration, the Flash memory and the memory card, the display, the keyboard and the serial
multi-standard RS232C/USB interface.

Channels

XYZ

LINE

output

Screen
Keyboard
Memory card
Flash Memory
RS232 Port
USB Port
I/O Trigger

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How to connect the accelerometers to the analyzer

The following diagram illustrates the different parts necessary to connect the accelerometers to
the HD2070. The left input is monoaxial, the right input is triaxial.

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INTRODUCTION

The HD2070 is a portable vibration analyzer able to perform spectral (option
HD2070.O1) and statistical analysis (option HD2070.O2). The instrument can supply all the
measurement parameters required by the current normative concerning the operators pro-
tection from the risk connected with the vibrations and is able to measure in hand-arm
and whole body modes. It is also possible to evaluate the annoyance of persons due to
vibrations in buildings.

The instrument has been designed mixing the easy to use concept with the maximum
flexibility and the possibility to update the instrument with the evolving standards on vibra­tions. The firmware can be updated directly by the user through the supplied Noise Studio
software (basic version).

HD2070 analyser can perform all measurements requested by technical standards con­cerning workers protection from the risk of mechanical vibrations exposure.

The HD2070 complies with the specifications of ISO 8041 (2005) and ISO 5349-1 (2001

- vibrations transmitted to the hand-arm system) and ISO 2631-1,2 and 4 (1997 – vibrations
transmitted to the whole body).

The HD2070 is a vibration analyzer suitable for the following applications:

• Evaluation of the exposure of operators to the risk connected with the vibrations trans-

mitted to the hand-arm system through vibrating tools or items subjected to vibrations

or impacts;

• Evaluation of the operator exposure to the risk connected with vibrations transmitted to

the whole body also through the use of movement or transportation ways;

• Evaluation of the operator exposure to the risk connected with vibrations transmitted to

the whole body by buildings subjected to vibrations or impacts;

• Octave or third-octave bands spectral analysis (option HD2070.O1);

• Statistical analysis with calculation of the percentile levels from L

1

to L

99

(option

HD2070.O2);

• Attenuation of vibrations and reclamations.

The HD2070 analyzer simultaneously acquires the acceleration value in 3 channels
and calculates, in parallel for all channels, both the weighted acceleration values and the
octave or third-octave bands spectra (option HD2070.O1). In addition to the instant and
average acceleration values, the analyzer also elaborates peak levels, vibration dose (VDV)
and crest factors. The frequency weighting can be chosen freely according to the specific ap­plication.

The possibility to connect any type of accelerometer with integrated electronics (type
IEPE or compatible), both triaxial and monoaxial, ensures the maximum ease of use and re­duces the possibility of making mistakes or taking measures affected by electromagnetic
interference or noise.

A versatile data logging function stores in the 8MB internal flash memory or, by user’s
selection, in the memory card (SD up to 2GB), multiple profiles and optional spectra. Moreover
it is possible to add to the profiles acquisition, also the digital samples recording of accelero­meters signal (option HD2070.O3). When analyzing the memorized data, it is then possible to
examine the signals provided by the accelerometers and calculate additional parameters or ve­rify the absence of source of errors such as those due to the DC-shift phenomenon. Each
recording can be associated with a vocal comment. Using the available audio channel, it is
possible to record an audio signal up to one hour, as a further opportunity to document the
measures.

The performed recordings can be reviewed using the provided "Memory Navigator"
program of the HD2070 analyzer. The vocal comments associated with the recordings can be
listened using the appropriate headphones output.

- 8 -

The LINE type unweighted analog outputs allow to record, for subsequent analysis, the
accelerometers signal on a tape or directly in a PC with an acquisition board.

The calibration can be done using the accelerometers calibration data or using a vibra­tions generator able to produce a known and stable acceleration. A reserved and protected
area in the permanent memory is used to record the last 120 calibrations performed. The sup­plied Noise Studio interface software allows to control the instrument and accelerometers and
to document the measurements by downloading automatically the register file of the instru­ment calibrations.

In order to easily carry out the different measurements on the field, in the HD2070 it is
possible to store up to 10 customizable and editable setups, also using the Noise Studio
software. A title is associated with each setup in order to easily choose the desired one.

Considering that in order to measure in every possible situation it is necessary to use dif­ferent types of accelerometers, up to 9 different sensor configurations both for triaxial and
for monoaxial sensor can be selected based on the requirements. The sensors calibrations and
configurations files are associated with the analyzer setups, so that, by choosing one of the
stored setups, the sensors to be connected to the input channels are indicated and the last as­sociated calibration values are automatically uploaded.

The check of the vibration analyzer functionality can be done directly by the user, in the
field, thanks to a diagnostic program.

HD2070 can be completely controlled by a PC through the RS232 and USB serial inter­faces, using an adequate communication protocol.

The Noise Studio interface software allows to download and display data stored in the
instrument, to handle the files related to setups, calibrations and configurations. With the
software it is possible to load in the analyzer up to 10 different setups, chosen among the
available ones. The file related to calibrations is downloaded at every connection and it is
saved together with the measurement data. The different sensors configurations can be pro­grammed through the PC, both inserting manually the accelerometers data and also using the
proper CD-ROM associated with the accelerometers that can be supplied by Delta Ohm togeth­er with the instrument.

HD2070.O1 option: “Spectral analysis”

Simultaneously to the acquisition of the profiles, it is performed the octave or third­octave bands real time spectral analysis (option HD2070.O1). The vibration analyzer

calculates the spectrum of the sound signal every second and integrates it linearly up to 99
hours. It is also possible to associate with the spectrum a frequency weighted measurement
parameter whose value is calculated from the acceleration values of each octave or third­octave spectrum band. In addition to the acceleration values for each band of the spectrum, it
is possible to display the speed or displacement value.
The choice to measure hand-arm (HA) or whole-body (WB and BV) modify the extension of
the spectral analysis: while for the hand-arm measures the frequency range extends from

3.15Hz to 3.15kHz (from 4Hz to 2kHz octave band spectrum), for whole-body measurements
the range of the central frequency is shifted towards low frequencies from 0.315Hz to 315Hz
(from 0.5Hz to 250Hz in octave bands) .
The octave and third-octave filters comply with the class 1 specifications of IEC 61260.

HD2070.O2 option: “Statistical analysis”

As statistical analyzer (option HD2070.O2), the HD2070 calculates the probability
distribution of a measurement parameter at choice and analyzes it in classes of 1dB. In
addition to the chart of probability distribution, it is also supplied the graph with percentile
levels from L

1

to L99.

- 9 -

HD2070.O3 option: “Digital recorder”

With this option it is possible to store, in parallel with the weighted acceleration profiles
and eventually the frequency spectra, also the signal’s digital samples recording. When analyz­ing the stored data, it is then possible to examine the signals provided by the accelerometers
and calculate additional parameters or verify the absence of source of errors such as those due
to the DC-shift phenomenon.

- 10 -

DESCRIPTION OF DISPLAY MODES

The acceleration values and the calculations made by the HD2070 analyzer are presented
in 5 di fferent screens. The instrument analyzes simultaneously the acceleration signals on 4
axis associated with three measurement channels CH1, CH2 and CH3. It is possible, in each
screen, to choose the channel to display by simply pressing the CHN key.

When the instrument is switched on, it briefly shows the Delta Ohm logo and the pro­gram version. Then it is requested the selection of the configuration for the sensors connected.

Press PREV or NEXT to scroll the memorized sensor list, SEL to confirm.

Then, the instrument enters the VLM (Vibration Level Meter) mode, displaying in numeri­cal form 3 instant or integrated measurement parameters.

If there is an external memory card, after the initial screen, the configuration files are
loaded and the following screen appears:

Press RD/WR to enable all the reading and writing functions and continue with the se­lection of the configurations.

Now the instrument is ready for the use (for the details about the sensors setup, see the
SENSORS SETUP program description).

MC installed

and ready.

Size: 1000 MB

ESC RD RD/WR

CONFIG. RIGHT #02
PROD: DELTA OHM
MOD: ACC_TRI
S.N.: 123456
TYPE: ACC TRI
SENS: 10mV/g CAL
RANGE: 500 gpk

SEL. PREV. NEXT.

- 11 -

The possible screen modes are:

• VLM (Vibration Level Meter): divided into four screens with three measurement pa-

rameters each. The values displayed in numerical form are updated every second.

o VLM_1: 3 profiles of instant or integrated measurement parameters calculated on

each of the three channels;

o VLM_2: 3 profiles of instant or integrated measurement parameters calculated on

the vector built with the data of the three channels

o VLM_3: 3 parameters integrated in all the measurement time and calculated on

each of the three channels;

o VLM_4: 3 parameters integrated on all the measurement time and calculated on

the vector built with the data of the three channels.

• PROFILE: graphical form profile of a chosen parameter, related to the acceleration on

each channel calculated at programmable intervals from 1s to one hour. The last 100

values of the chosen parameter are visualized.

• SPECTRUM (option HD2070.O1): graph of the octave or third-octave bands spectrum

graphic, related to the acceleration on each channel. A wide band parameter, calculated

from the measured spectra, is associated with the spectrum. In addition to the accelera-

tions, it is possible to visualize the speeds or the displacements, making a single or

double integration on the spectrum. The spectrum can be visualized in multi-spectrum

mode (MLT: one spectrum per second) or in averaged spectrum (AVR) where the spec-

trum is linearly integrated in all the measurement time.

• PROBABILITY (option HD2070.O2): graph of the probability distribution of the para-

meter visualized in the PROFILE screen for each channel. The values are analyzed in

classes of 1dB.

• PERCENTILES (option HD2070.O2): graph of percentile levels related to the parame-

ter visualized in the PROFILE screen for each channel.

The transition from one screen to the next one can be made at any time by pressing the
MODE key. At start-up, after the selection of the input configuration, the instrument displays
the VLM screen.

Some indications appear in all the modes, they are:

 The indicator of the acquisition status,
 The overload indicator,
 The indicator of the remaining batteries charge.

The first symbol in the top left corner of the display indicates the acquisition status
of the vibration analyzer.

RUN: the instrument is acquiring.
PAUSE: the calculation of the integrated measures and the eventual measures recording are

paused. The instant parameters continue to be measured and visualized.

Current Overload

Overload memory

Subfield memory

Current subfield

RUN

PAUSE

REC

STOP

Hold

Print

Replay

- 12 -

REC: The instrument is acquiring and recording.
STOP: the instrument does not perform any measurement.
H (HOLD): the calculation of the integrated measurements has come to the end of the inte-

gration interval or the HOLD key was pressed.

P (Print): the printing of the current data is running.
R (Replay): it appears (blinking) when the “MEMORY NAVIGATOR” program is used to display

a file saved in the instrument memory.

Immediately to the right of the symbol indicating the acquisition mode, there is the sym­bol indicating the possible overload. An arrow pointing up indicates that the input level has
exceeded the maximum level measurable, a down arrow indicates that the input level is be­low the minimum according to the selected gain.

The maximum measurable level in the different settings of the measurement range se­lector is indicated in the technical specifications (see the chapter "TECHNICAL
SPECIFICATIONS").

An internally empty arrow reminds that an overload occurred, while a full arrow indicates
that the signal is currently exceeding the limit.

To the right of the overload indicator it is displayed the integration time Tint of the in­strument, which is programmable from 1s to 99h. When the integration mode is set to
multiple, the "Tint" symbol in the VLM screen blinks. If Tint = 0, the integration is becomes
continue.

In the upper right corner there is the battery symbol. The batteries discharge appears
as a gradual emptying of the symbol. When the remaining working time of the instrument is
about 10%, which is roughly correspondent to 30 minutes in the continuous acquisition, the
battery symbol blinks. A protective device prevents the instrument from taking measurements
with insufficient charge level and automatically shuts the instrument off when the charge level
is reduced to a minimum.

The charge level of the batteries, expressed in percentage, is visible in the menu main
screen, that can be accessed pressing the MENU key once. Press the MENU key again to return
to the measurement screen.

For details, see the chapter "REPORTING OF LOW BATTERIES AND REPLACEMENT OF
BATTERIES."

Pressing the ENTER key, the parameters related to the visualized screen can be selected
in sequence. While the selected parameter is blinking, it is possible to change it pressing the
UP and DOWN arrow keys. Pressing ENTER, or automatically after about 10s, the parameter is
confirmed and the selection mode is exited.

In graphic visualization mode it is possible to change the parameters of the vertical scale
using the UP, DOWN, LEFT and RIGHT arrow keys: the LEFT and RIGHT keys compress and
expand the vertical scale respectively, the UP and DOWN keys decrease and increase the initial
and final levels of the vertical scale; in this way the graphic is moved upwards and downwards
respectively.

- 13 -

VLM SCREEN

The VLM screens shows, in numerical form, three frequency weighted parameters related
to each of the three measurement channels or to the acceleration vector calculated with the
data of the first three axes. It is possible to scroll in sequence the screens using the
right and left cursor keys.

The horizontal bar visualizes the instant levels of the three measurement channels ex­pressed in dB.

VLM_1 and VLM_2

The first two screens VLM_1 and VLM_2 present instant and integrated parameters
that are acquired, and in case memorized, as a profile form with 1 second acquisition inter­val or integrated with intervals programmable from 10s to 1 hour. In the VLM_2 screen are
visualized the parameters related to the channels of the vector acceleration sum (CHΣ) and
maximum (CHM). The measurement parameters to be displayed can be set entering

the menu Parameters >> Vibration Analyzer.

VLM_3 and VLM_4

The last two screens VLM_3 e VLM_4 present global parameters integrated in all the
measurement period. It is possible to automatically memorize the value of these parame-

ters at the end of each measurement session. In the VLM_4 screen are visualized the
parameters related to the channels of the vector acceleration sum (CHΣ) and maximum
(CHM). These measurement parameters can be set entering the menu Parameters

>> Data Logger >>Global.

To change the measurement unit without entering the instrument menu, it is suffi­cient to use the RIGHT and LEFT arrow keys. The measurement units are dB, m/s

2

, cm/s2,

ft/s

2

, in/s2, g. The measurement unit selected is unique and it is applied to all the visualized

parameters.
The CHN key allows to change the visualized channel. The measurement channels of sin-

gle axis acceleration are three (CH1,CH2 and CH3) while the measurement channels of the
vector acceleration are two: the “sum” vector (CHΣ) and the “maximum” vector (GHM), both
calculated with the data of the first three measurement channels (RIGHT input).

The “sum” vector is defined by the relation:

()( )( )

2

3

3

2

2

2

2

1

1

*3*2*1

ch
P

ch
P

ch
P

SOMMA

aCaCaCa

v

++=

While the “maximum” vector is defined by the relation:

()( )( )

[]

2

3

3

2

2

2

2

1

1

*3,*2,*1max

ch

P

ch
P

ch
P

MASSIMO

aCaCaCa

v

=

Visualized parameters

Visualized channel

Minimum Level

Maximum Level

Bar indicating the
Instant level

Acquisition time

Integration Interval

Frequency Weighting

- 14 -

Where:

• C1, C2 and C3 are the multiplying coefficients for each channel that can be set through

the menu Parameters>> Instrument >> Measurement>> Coeff.1, Coeff.2 and Coeff.3

• a

ch1

P1

, a

ch2

P2

, a

ch3

P3

are pondered acceleration found on each of the three channels. The
frequency weightings are set in the menu Parameters>> Instrument >> Measure­ment>> Pond.1, Pond.2 and Pond.3.

From the menu (MENU>> Parameters>> Instrument >> Measure>> Ch1-3), it is poss-

ible to disable one or more measurement channels, for example because they are not in
use. The status of each channel is indicated in the menu with a number: 0 (zero) indicates a
disabled channel, 1 indicates an active channel.

The three channels are indicated in the order CH1, CH2, CH3: in order to have all the

channels activated, the menu item must be Ch1-3=111. To disable the CH1 channel, for
example, the menu item must be Ch1-3=011. It is not possible to disable all the channels

at the same time.

When one or more of the channels CH1, CH2 or CH3 are disabled, the measure-

ments related to the “sum” and “maximum” vector are not visualized on the display.

The visualized measurement parameters can be changed without entering the menu of

the instrument. Pressing the ENTER key while the instrument is in STOP mode, the di-
rectly editable parameters can be scrolled in sequence. When the selected parameter
blinks, it is possible to modify it using the UP and DOWN arrows.

The changeable parameters are:

• Integration time (Menu >> Parameters >> Instrument >> Measurement >> Integra-

tion Interval).
Settable from 1s to 99 hours (when it is set to 0 the integration is continuous). Pressing
the RIGHT arrow while the value is blinking, the multiple integration mode is selected
(Menu >> Parameters >> Instrument >> Measure >> Integration Mode). To set the
single integration mode, it is sufficient to press the LEFT arrow. When the integration
mode is multiple, the symbol “Tint” blinks to indicate that the instrument will execute
many integration intervals in sequence, each of them with a duration equal to the inte­gration time set.

• The three measurement parameters of acceleration (Menu >> Parameters >> Vi-

bration Analyzer) for the three parameters related to each channel, to sum vector and
maximum value associated with VLM_1 and VLM_2 screens. For VLM_3 and VLM_4
screens, the acceleration measurement parameters changeable directly, are the ones in
Menu >> Parameters >> Data Logger >> Global.

When one of the acceleration measurement parameters is selected, the parameter sym­bol blinks. Pressing the UP and DOWN arrows it is possible to scroll in sequence all the
measurement parameters available.

• The frequen cy weight ing applied to each measurement channel (Menu >> Parameters

>> Instrument >> Measure >> Pond. Ch-x with x=1,..,4). While the frequency weight­ing symbol blinks, it is possible to modify the weight using the UP and DOWN arrows. The
weighting can be changed only in VLM_1 and VLM_3 screens. The VLM_2 and VLM_4
screens report the abbreviation of the weightings applied to the three channels CH1, CH2
and CH3: e.g. “zch” means CH1=Fz, CH2=Fc and CH3=Wh.

- 15 -

PROFILE SCREEN

This screen presents in graphic form the profile of a frequency weighted parameter re-

lated to each of the 3 measurement channels.

The values can be visualized in dB or in m/s

2

(Menu >> Parameters >> Instrument >>

Measure >> Measurement Unit).

The CHN key allows to change the visualized channel.

With the LEFT and RIGHT arrow keys it is possible to change the vertical scale
of the graph while with the UP and DOWN arrow keys it is possible to choose the
reference value of the vertical scale.

It is possible to activate two cursors to read the value in two points at choice of the
graph. Pressing the CURSOR key once, the first cursor is activated, pressing the second time,
the second cursor is activated while pressing the CURSOR key the third time, both cursors are
activated in tracking mode. To place the cursors in the desired points, the arrow keys next to
the CURSOR key can be used.

Using the HOLD key, the graph updating is paused, allowing a comfortable reading of
the measured values. Press again the HOLD key to return to real time visualization.

The sampling time of the graph can be selected from 1s up to 1 hour per point.

The parameter selected for this screen is the same used for the statistical analysis (see
PROBABILITY and PERCENTILES screens) with a 1s sampling interval.

The visualized measurement parameters can be modified without entering the menu of
the instrument. Pressing the ENTER key while the instrument is in STOP mode, the di-

rectly changeable parameters can be scrolled in sequence. When the selected
parameter blinks, it is possible to modify it using the UP and DOWN arrows.

The changeable parameters are:

• The acceleration measurement parameter (Menu >> Parameters >> Vibration Ana-

lyzer >> Profile). Pressing the UP and DOWN arrows, it is possible to scroll in sequence
all the measurement parameters available.

• The sampling interval of the measurement parameter (Menu >> Parameters >> In-

strument >> Measurement >> Sampling Profile). It can be set from 1s up to 1 hour.

• The integration interval (Menu >> Parameters >> Instrument >> Measurement >>

Integration Interval). It can be set from 1s to 99 hours (when it is set to 0, the integra­tion is continuous).

• The frequency weighting (Menu >> Parameters >> Instrument >> Measurement

>>Wh. Ch-x with x=1,..,3). The parameter is associated with the measure channel vi­sualized. To modify it, use the UP and DOWN arrows.

Selected Channel

Minimum Level

Scale Facto

r

Maximum Level

Visualized Paramete

r

Integration Interval

Integration Time

Profile

Frequency Weighting

Sampling Interval

- 16 -

SPECTRUM SCREEN (OPTION HD2070.O1)

The SPECTRUM screen presents in graphic form the octave or third-octave bands spec­trum related to each of the 3 measurement channels. The order of the visualized spectrum, in
octave or third-octave bands, is set entering the Menu >> Parameters >> Spectrum Analyzer
>> Order.

The values can be visualized in dB or in m/s

2

.

The CHN key allows to change the visualized channel.

With the LEFT and RIGHT arrow keys it is possible to change the vertical scale
of the graph while with the UP and DOWN arrow keys it is possible to choose the
reference value of the vertical scale.

The spectral analysis is made both in multi-spectrum mode (MLT), where a spectrum
every second is visualized, and in average spectrum mode (AVR), where the spectrum in­tegrated in all the measurement time is visualized.

It’s possible to associate with the octave or third-octave bands spectrum, the value of
the frequency weighted acceleration, calculated from the spectrum.

CURSORS OPERATION

It is possible to activate two cursors to read the value of the visualized bands. Pressing
the CURSOR key once, the first cursor is activated, pressing the second time, the second cur­sor is activated while pressing the CURSOR key the third time, both cursors are activated in
tracking mode. To place the cursors in the desired points, the arrow keys next to the CURSOR
key can be used.

When the cursors function is not active, it is possible to pass from the visualization of the
acceleration for each band to the speed or displacement visualization, pressing in sequence
the left and right cursor keys.

Using the HOLD key, the graph updating is paused, simplifying the reading of the meas­ured values. Press again the HOLD key to return to the real time visualization.

Keeping pressed the cursors activation key, the limit acceleration curve is
visualized. This curve is based on the acceleration value in the band selected with the cursor

L1 and presents for each band the limit value of the acceleration corresponding to a
displacement equal to that of the selected band.

For example, it is possible to choose as reference band with the cursor L1 the band cor­responding to the dominant frequency of the spectrum and, supposing that the displacement
component at this frequency is also dominant, visualize the maximum acceleration levels on
the other bands of the spectrum that cause displacement values equal to or lower than the one
of the selected band. Eventual phenomena of DC-shift happen with acceleration values at low
frequencies with unreal associated displacements and so can be easily localized because they

Selected Channel

Minimum Level

Scale Facto

r

Maximum Level

Visualized Paramete

r

Integration Interval

Integration Time

Level with a large band

Frequency Weighting

Octave and third octave band
spectrum

- 17 -

will be associated with values of acceleration at low frequencies greater than the visualized
limit.

To disable the limit acceleration curve keep pressed the CURSOR key.

The visualized measurement parameters can be modified without entering the
menu of the instrument. Pressing the ENTER key while the instrument is in STOP mode, the

directly changeable parameters can be scrolled in sequence. When the selected parameter
blinks, it is possible to modify it using the UP and DOWN arrows.

The changeable parameters are:

• The integration interval (Menu >> Parameters >> Instrument >> Measure >> Inte-

gration Interval). It can be set from 1s to 99 hours (when it is set to 0, the integration is
continuous)

• The frequency weighting of the acceleration value associated with the spectrum

(Menu >> Parameters >> Spectrum Analyzer >> Auxiliary weight). This parameter is
changeable also in measuring mode.

• The type of the visualized spectrum MLT or AVR (Menu >> Parameters >> Spec-

trum Analyzer >> Mode). This parameter is changeable also in measuring mode.

- 18 -

DISTRIBUTION OF PROBABILITY SCREEN (OPTION HD2070.O2 )

The PROBABILITY screen presents in graphic form the probability distribution of the
values of the parameter visualized in the PROFILE screen for each of the 3 channels.

The values can be visualized in dB or in m/s

2

.

The CHN key allows to change the visualized channel.
With the LEFT and RIGHT arrow keys it is possible to change the vertical scale of the

graph while with the UP and DOWN arrow keys it is possible to choose the reference
value of the vertical scale.

CURSORS WORKING

It is possible to activate two cursors to read the probability in two points at choice in
the graph or, when they are both selected, to calculate the probability to have a value between
the two cursors. Pressing the CURSOR key once, the first cursor is activated, pressing the
second time, the second cursor is activated while pressing the CURSOR key the third time,
both cursors are activated in tracking mode. To place the cursors in the desired points, the
arrow keys next to the CURSOR key can be used.

The statistical analysis is done in 1dB classes, sampling the value of the parameter
selected for the PROFILE screen once per second for each of the 3 channels.

The visualized measurement parameters can be modified without entering the
menu of the instrument. Pressing the ENTER key while the instrument is in STOP mode, the

changeable parameters can be scrolled in sequence. When the selected parameter blinks, it is
possible to modify it using the UP and DOWN arrows.

The editable parameters are:

• The acceleration measurement parameter (Menu >> Parameters >> Vibration Ana-

lyzer >> Profile).

• The frequency weighting (Menu >> Parameters >> Instrument >> Measurement >>

Wh. Ch-x with x=1,..,3). The parameter is associated with the visualized measurement
channel. To modify it, use the UP and DOWN arrows.

Selected channel

Minimum Level

Scale Facto

r

Maximum Level

Visualized paramete

r

Integration Time

Weighting

Probability

- 19 -

PERCENTILES SCREEN (OPTION HD2070.O2)

Percentile screen presents in graphic form the percentile levels from L

1

to L99 associated

with the parameter visualized in the PROFILE screen for each of the 3 channels.

The values can be visualized in dB or m/s

2

.

CHN key allows to change the visualized channel.

With LEFT and RIGHT arrow keys you can change the vertical scale of the
graphic while with UP and DOWN arrow keys you can chose the value in reference
with the vertical scale.

CURSORS FUNCTIONS

It is possible to activate a cursor to examine the graph. Pressing the CURSOR key, the
cursor is activated; in order to place the cursor in the desired point, the arrow keys next to the
CURSOR key can be used.

To facilitate the graph viewing, two dashed vertical bars are displayed in correspondence
of 5 and 95%.

The visualized measurement parameters can be modified without entering the
menu of the instrument. Pressing the ENTER key while the instrument is in STOP mode, the

changeable parameters can be scrolled in sequence. When the selected parameter blinks, it is
possible to modify it using the UP and DOWN arrows.

Can be modified:

• The acceleration measurement parameter (Menu >> Parameters >> Vibration Ana-

lyzer >> Profile).

• The frequency weighting (Menu >> Parameters >> Instrument >> Measurement >>

Wh. Ch-x with x=1,..,3). The parameter is associated with the visualized measurement
channel. To modify it, use the UP and DOWN arrows.

Selected Channel

Minimum Level

Scale Facto

r

Maximum Level

Visualized paramete

r

Integration time

Weighting

percentile level

- 20 -

APPLICATIONS

The HD2070 analyzer can measure vibrations in three different applications selectable
with the parameter Menu >> Parameters >> Instrument >> Measurement >> Application:

• Hand Arm (HA) for the measurements of vibrations transmitted to the hand-arm sys-

tem, for example by tools through the grip.

• Whole Body (WB) for the measurements of vibrations transmitted to the whole body,

for example to a driver through the seat.

• Building Vibration (BV) for the measurement of vibrations transmitted to the whole

body by buildings.

In general, different applications require specific accelerometers which differ mainly
for the sensitivity, frequency response, weight and mounting characteristics.
The accelerometers suitable for the HD2070 may be triaxial or mono-axial type with inte­grated electronics (IEPE or equivalent) and sensitivity from 1 mV/g to 1V/g.
These accelerometers are current-supplied by the analyzer with a bias voltage of 25V and a
maximum current equal to 2mA.
Since the dynamic range of the accelerometer- analyzer chain is limited to about 100dB, in or­der to perform all types of vibration measurements (hand-arm and whole body vibration or
buildings), accelerometers with different sensitivities are required. In fact, while for the meas­urement of vibration transmitted to the hand-arm can be used an accelerometer with a
sensitivity from 1 mV/g to 10 mV/g, capable of measuring peak accelerations up to
5000 ÷ 50000 m/s2 , for the measurement of accelerations in buildings it is necessary to
use accelerometers with a sensitivity of 1 V/g, in order to measure accelerations starting from
1 mm/s2.

HAND ARM

Many tools operated or gripped by hands generate vibrations. In some of these tools the
vibration levels can be very high: for example, saws, hammers, grinders, drills, cleaners, vi­brating plates, mowers, hammers, etc.. The vibration is transmitted to the operator's hands
(and arms) through physical contact with the utensil. In some cases vibration is transmitted
directly by gripping the part to be machined (such as on a column grinder).

The procedures for measuring and assessing exposure of workers to hand-arm vibration
are defined by ISO 5349-1 and ISO 5349-2. For measurements are used accelerometers with a
sensitivity from 1 mV/g to 10 mV/g , reduced size and weight, capable to measure weighted
accelerations of about 1m/s

2

while, at the same time, very high peak accelerations even higher

than 10000 m/s

2

. In most practical situations will be used a miniature triaxial accelerometer,

with a sensitivity of 10mV/g and resonant frequency greater than 10kHz. When the peak acce­lerations exceed 1000g repeatedly, it is necessary to use a shock accelerometer with 1mV/g
sensitivity and resonant frequency greater than 50kHz. In this case also a mono-axial accele­rometer is enough, taking care to orientate it so as to measure the accelerations along the
dominant axis. For exposure assessment should be considered vibrations being transmitted to

the center of the operator's hand during the tool’s grip
and use. Since normally it is not possible to fix the accele­rometer in that position, while this would constitute an
obstacle to the operator, the accelerometer is fixed at the
closest position to the one occupied by the hand (so that
it would not constitute a disturbance to the use of the
machine itself). The picture shows the position in which,
according to ISO 5349-2, the accelerometer is attached to
the handle of hammers and chipping hammers. In some
cases, for the particular shape of the handles or the over­all dimensions of the control lever, it is not possible to fix

the accelerometer in accordance with the standard’s guid­ance. In this case an alternate location in the closest possible location to the operator's hand
will be found. The demolition hammers have two handles, one of which cannot be used to fix

- 21 -

the accelerometer because it’s entire length it occupied by the operating lever: the transducer
must be necessarily mounted on the handle without the lever.

These pictures show the possibility to mount the sensor
for two different han­dles categories. The
ISO standard 5349-1
specifies the orienta­tion of the reference
system according to
which are to be col­lected the three
acceleration’s vector

components; nevertheless, for each specific category of
portable machine tool, ISO 8662 gives the definition of
the specific coordinates to be adopted.

The standard defines the coordinate sys-

tem:

• Z direction: the direction parallel to

percussion direction; in ISO 5349-1 this axis
takes the direction of the third metacarpal bone
of the operator’s hand;

• Y-direction: the direction in the plane

including the handle and the Z axis; orthogonal
with the Z axis.

• X -direction: direction perpendicular to

Y and Z directions.

Since the ISO 5349-1 introduced as
evaluation parameter the accelerations vector
sum, the orientation of the coordinate system, purely conventional, does not affect the evalua­tion procedure; it is therefore independent of the reference system adopted.

Selecting the application Menu >> Parameters >> Instrument >> Measurement >> Applica­tion: HA, the HD2070 analyser performs measurements in accordance with ISO 5349. The
weighted acceleration (to simulate the hand-arm system sensitivity), is calculated applying the
filter named Wh on all measurement axes. Alternatively are available the band-pass filters Fz
and Fc, respectively, 1 Hz ÷ 3.5 kHz and 6.3 Hz ÷ 1250 Hz and the analyzer measures the ac­celerometer’s signals spectrum by octave bands from 4Hz to 2 kHz or third octave from 3.15
Hz to 3.15 kHz.
In the vibrations transmitted to hand-arm system, transducer mounting is the most delicate
operation. The accelerometer weight should be less than 10% the weight of the tool and typi­cally less than 30g including the weight of the mounting adapter. The accelerometer must be
fixed to the handle so as to follow the oscillations, therefore allowing acquisition of vibrations
effectively transmitted to the operator's hand.

HD2030AC1

The HD2030AC1 is a compact cube adaptor that is fixed with a
plastic or metal strip to the handle of the tool to analyze. The position
must be chosen as close as possible to that occupied by the hand ac­cording to the indications of ISO 5349-2. Light alloy built, it is suitable
for measurements on lightweight tools where it is necessary to contain
the weight of the measuring system. It can be used with accelerome­ters with a threaded hole (10-32 UNF or UNC 5-40); the accelerometer
is secured by a screw on the adapter. This support ensures easy and
quick mounting and optimum adaptation to different types of handles.

- 22 -

The accelerometer, equipped with a threaded hole (10-32 UNF 5-40 or UNC), is secured to the
adapter via a tightening screw which, passing through a hole on the upper surface of the adap­ter, is screwed to the accelerometer base. The vibrations produced by percussive machine
tools movement, are characterized by very high frequency and intensity acceleration’s spectral
components. With this loads, the piezoelectric crystal, which implements acceleration’s trans­duction into electrical signal, is subjected to stress and generates a continuous spurious signal
very high for a long time, even after the physical load has ended; the spurious signal overlaps
the detected signal adding distortion to the measurement.

To avoid this phenomenon, called "DC shift", it is necessary to

reduce the accelerometer’s loads at higher frequencies. Normally,
the presence of dumping material on the handle or the interposition
of a thin rubber layer (1-2 mm) between the support of the accele­rometer and the handle, are sufficient to prevent the phenomenon (1
in the picture). The resilient material must be compressed to the
maximum tightening of the clamp mounting of the support. To avoid
damaging the resilient material while tightening, it is sufficient to
interpose a alloy ring with a thickness of 1-2 mm between such ma­terial and the clamp (2 in the picture). The vibrations transmitted
from the tool to the hand-arm will be properly represented only un­der certain conditions by the measurement made by fixing the
accelerometer to the handle as previously described. In fact, by the
tightening of the adapter to the handle depends the fraction of vibra­tional energy transmitted to the sensor and therefore measured. It's
evident that tightening the clamp to the maximum will be obtained a
high mechanical coupling and therefore the measured acceleration
will be maximum. However, not always by tightening the clamp to

the maximum, it will be achieved a representative measure of the
true stress the operator's hand is subjected to. Normally the operator tightening the handle
exerts a variable grip strength, depending on the particular processing step and in any case a
compromise between operational effectiveness and comfort. To detect the vibrations really
transmitted by the tool to the operator it is sometimes convenient to use supports with specific
shapes to be interposed between the hand and the handle.

HD2030AC2

HD2030AC2 and HD2030AC3 adapters must be gripped between the
hand and the handle. As the accelerometer is fixed in a lateral posi­tion, the measurement must be repeated by placing the accelerometer
on both sides of the hand.
These adapters are suitable for large cylindrical handles coated with
resilient material.

HD2030AC3

The HD2030AC2 is made of light alloy and fitted with accelerometers
using a threaded hole (10-32 UNF or UNC 5-40); accelerometer is se­cured by a screw on the adapter.
The HD2030AC3 is steel made and has to be used with accelerometers
having integrated screw (10-32 UNF); accelerometer is fixed to the

adapter using the threaded hole.

HD2030AC4

The HD2030AC4 is an adapter to be held between the hand and the han­dle. The accelerometer is placed in central position between the middle
finger and the ring finger or between the index and the middle fingers.
Light alloy made, it is suitable for anatomical shape, non-cylindrical and/or
small dimension handles.

It must be uses with accelerometers fitted with a threaded hole (10-

32 UNF or UNC 5-40); accelerometer is secured by a screw on the adapter.

- 23 -

The spectral analysis, available with the option HD2070.O1, is performed in the range

3.15Hz to 3150Hz. In the measurements of the vibrations transmitted to the hand-arm sys­tem, it is useful the visualization of the limit acceleration available in the SPECTRUM screen.

In case of doubt, it is possible to enable the direct recording of the signal (option
HD2070.O3) provided by the accelerometers (storage only on SD memory card). The DC-shift
phenomena can be easily detected analyzing the signal of the accelerometers with the Noise
Studio software supplied.

WHOLE BODY

The reference standard for assessing exposure to whole-body vibration is there-ISO
2631-1:1997. It defines standardized methods for measuring whole-body vibration and pro­vides some guidelines for the assessment of health effects. The Vibration’s transmission can be
through the feet of a person standing or sitting on a seat, through the buttocks and the back if
the person is sitting, or through the support area for a person in a supine position.

The standard defines the coordinate systems for the mea­surement of acceleration; x, y and z axes are always directed in
the same direction but with different origins, depending on the
position of the operator is sitting, standing or lying down. In
whole body vibrations the z axis, which is directed in the spinal
column direction, is the higher risk organ to vibrations expo­sure.

The recorded magnitude is the r.m.s. weighted accelera­tion value (Root mean square value) in the frequency range
from 0.5 Hz to 80 Hz. Below 0.5Hz the body, as a single mass,
homogeneously follows the displacement of the vibrating sur­face with which it is in con­tact to. Higher frequencies
than 80Hz involve only the
surface of the body where
the contact is; deeper lay­ers of the epidermis leads
to a rapid attenuation of
vibrations not reaching in-

ternal structures of human body.

Procedures to measure and assess worker’s expo­sure to whole-body vibrations are defined in ISO 2631-1
and ISO 2631-2. For whole body vibration measurement is
used an accelerometer with a typical sensitivity of
100mV/g. The accelerometer may be fixed directly to the
surface transmitting vibrations to the human body using a
screw or using glue. Alternatively, if the surface is metal­lic, it is possible to fix the accelerometer using a magnetic support. The magnetic base can also

be used for non-magnetic surfaces; a
metal disk can be glued to the sur­face, then the accelerometer
(mounted on the magnetic base)
fixed on it.

If the surface is not sufficiently
planar, it is possible to use a mobile
support where the accelerometer is
fixed; the weight of the support must
be sufficient to ensure acceleration
measurement up to at least 1m/s

2

.

- 24 -

HD2030AC5

Support suitable for vibration measurements on floors and other surfac­es.
Provides three different fixing points:

• in the hollow seat placed on the support’s lower face

• on the upper face with a threaded hole,

• on the adaptor cube fixed on upper face.
To access the hollow seat, unscrew the three screws used to close the
back. The cavity has been sized for hosting a triaxial accelerometer with
a central hole.
The accelerometer’s connecting cable passes through the side hole (see
picture). To help analysis of acquired signals, we recommend that you

reproduce, on the upper face, the same axial directions of the sensor.
On the upper face is present a threaded hole for mounting a triaxial or monoaxial accelerome­ter.
Usually the accelerometer’s sensitivity should be about 100 mV/g for working environment
measurement and 1V/g for building vibrations annoyance measurements.
With the support is provided a cube adapter to be fixed on the upper face; this is for connec­tion of three high sensitivity mono-axial accelerometers. To connect the three accelerometers
to HD2070 analyzer is requested HD2030.CAB13 cable.
The support is provided with three support feet and a spirit level: if necessary, adjust the two
mobile feet to adapt the horizontal position of the support using the spirit level as a reference.
To measure vibrations transmitted from seats and backs , the accelerometer is normally in­serted in a rubber pad, made according to the requirements of EN 30326-1. This pad is
positioned on the seat or fixed on the backrest with a tape so that is interposed between the
seat itself and the body part submitted to vibrations.
Unlike the measurement of hand-arm vibrations, where the modulus of the acceleration vector
is compared to the legal limits, to the extent of whole-body vibration it is the comparison with
the dominant component, namely the one along the axis having the greatest strain. It’s there­fore necessary to accurately orient the accelerometer’s axes according to the reference system
established by ISO 2631-1 in order to avoid recalculating x, y and z acceleration components.
Selecting the Menu >> Parameters >> Instrument >> Measurements >> Application: WB, the
HD2070 analyzer performs measurements in accordance with ISO 2631-1.
The acceleration (frequency weighted to simulate the human body sensitivity to vibration) is
calculated by applying the filters Wb, Wc, Wd, We, Wj, Wk to the measurement axes, as a
function of the body’s part subjected to vibrations and the type of assessment needed: per­son’s health, comfort or perception. Alternatively are available Fz and Fa band-pass filters
respectively 0.2 Hz ... 3.5 kHz and 0.4 Hz ... 100 Hz
If HD2070.O1 option is installed, the analyzer can calculate the accelerations spectra in octave
bands from 1 Hz to 250 Hz or in third octave from 0.5 Hz to 315 Hz

BUILDING VIBRATION

With this application, the HD2070 analyzer performs the measures in accordance with
ISO 2631-2. For the evaluation of annoyance due to vibrations transmitted by the building
structure, accelerometers are used with high sensitivity (typically from 1V/g) and resonance
frequency greater than 1000Hz. The accelerometer is typically mounted on a heavy block to be
placed on the floor, like HD2030AC5 (see description in the previous paragraph).

Selecting the Menu >> Parameters >> Instrument >> Measurements >> Application:
BV, the HD2070 analyzer performs the measurements according to ISO 2631-2.

The acceleration signal, weighted to simulate the human body sensitivity to vibration, is
filtered with Wm weighting on all measurement axes. Alternatively Fz and Fm band-pass filters
are available respectively 0.2 Hz ... 3.5 kHz and 0.8 Hz ... 100 Hz

If HD2070.O1 option is installed, the analyzer can calculate the accelerometer signal
spectrum in octave bands from 1 Hz to 250 Hz or third octave from 0.5 Hz to 315 Hz

- 25 -

MEASUREMENT MODES

The HD2070 analyzer is able to measure in two different modes, selectable with the pa­rameter Menu >> Parameters>> Instrument >> Measurement >> Integration Mode:

• Single Integration (SING) with measurement time programmable from 1s to 99

hours, and the possibility of manual stop.

• Multiple Integration (MULT) with manual stop of the measurement. The measure-

ment time is divided in time intervals programmable from 10s to 1 hour.

The measurement starts pressing the START/STOP key.

At the beginning, the measurements are affected by the settling time of the accelerome­ters signals. To minimize the effect, after starting the measurement pressing the START/STOP
key, the instrument keeps zeroed the instant and integrated parameters until it is elapsed the
delay time, that can be set with the parameter "Menu>> Parameters>> Instrument >> Mea­surement>> Integration Delay", from a minimum of 1 second to a maximum of 99 seconds.

SINGLE INTEGRATION

In this mode, the instrument calculates the integrated parameters, like the
average time of acceleration for example, in the set measurement time Tint.

The measurement time is programmable from a minimum of 1 second to a maximum of
99 hours with the Menu>> Parameters>> Instrument >> Measurement >> Int. Integration.

It is possible to pause the measurement by pressing the PAUSE key, and restart the
measurement by pressing the same key. While the instrument is paused it is possible to reset
all the integrated parameters by pressing the START/STOP key.

The measurement ends automatically when the set integration time expiries, or
manually by pressing the START/STOP key.

At the end of the measurement, the integrated parameters indicate the value calculated
in all the measuring period, excluding the pause intervals.

The spectral analysis, if performed in AVERAGE mode (Menu>> Parameters>> spectrum
analyzer>> Mode: AVERAGE), and the statistical analysis provide respectively the average
spectrum, the probabilities and percentiles levels calculated in the measurement time.

MULTIPLE INTEGRATION

In this mode the instrument calculates the integrated parameters, like the
average acceleration for example, at regular time intervals with a set duration.

The duration Tint of each interval is set through the Menu>> Parameters>> Instrument
>> Measurement>> Int. Integration, from a minimum of 10 seconds to a maximum of 1 hour.

The measure ends pressing the START/STOP key.

It is possible to pause the measurement pressing the PAUSE key, to start again the mea­surement press the same key.

While the instrument is paused, it is possible to reset all the integrated parameters by
pressing the START/STOP key.

At the end of each interval, the integrated parameters, the statistical analysis and the
spectrum, when done in AVERAGE mode (Menu>> Parameters >> Spectrum analyzer >>
Mode: AVERAGE), are automatically reset.

This mode of integration can be used for purposes of monitoring, for example when it is
necessary to detect the average value of acceleration every minute.

- 26 -

USE OF THE EXTERNAL MEMORY CARD

The HD2070 has an interface that handles an external memory card for storing the data,
the configuration parameters of the instrument and sensors.

The memory card, supplied with the instrument, has Delta Ohm code HD2030MC. If
cards not supplied by Delta Ohm are used, make sure they have the same read / write speed
performances.

The card must be SD-type with a maximum capacity of 2GB.
To use a new memory card, it is necessary:

1. to format it using the Noise Studio PC software.

2. to initialize it using the HD2070: the initialization function creates the folder where the

measurement files will be placed and copy the calibration log file (see the description of
the calibration program).

The formatting operation requires a PC equipped with a memory card reader (not sup­plied with the instrument). Normally all the latest laptop and desktop PC are provided with it.
If not, it is possible to use an external memory card reader connectable to a USB port.

To format a SD card, proceed as follows:

• If the PC is without reader, connect an external SD cards reader to a PC USB port.

• Start the Noise Studio software.

• Press the instrument management key in Noise Studio: press the Format Memory Card key.

• Select the path of the card to be formatted and press ENTER.

• In the next screen make sure it is selected the parameter "File System = FAT" and press

START: the card is formatted.

• When it appears the message "Formatting completed”, press OK to confirm and CLOSE to
exit.

• Close the Noise Studio software.

• The formatting procedure is complete.

To initialize a card, proceed as follows:

Two methods are provided:

• Use of the "Initialization MC" function in the programs menu of the instrument (see the

details in the description of the programs): this feature erases the eventual data already

existing in the card.

• If the card is new and already formatted, turn on the instrument after inserting the card

into the front slot of the instrument: the initialization procedure starts automatically. At

the end of the operation, it appears the message "MC installed and ready to use."

MC installed

and ready.

Size: 1000MB

ESC RD RD/WR

- 27 -

Press RD/WR to enable all the reading and writing functions.

Press RD alone to read the content of a card. The recording of new data is disabled: in

this way it is avoided to overwrite the files already stored in the card.

The card is ready to be used.
Note: the HD2070’s "Initializing MC" function also checks the read/wright speed of installed

card. If the SD card fails this test for the first time, initialization function is repeated: may it
happen more than three times, replace the card with a faster one. Do the same if the message
"Error reading memory" appears during initialization procedure.

- 28 -

RECORDING MODES

The HD2070 is able to perform three different types of storage:

• Single Record, it can be manual or automatic.

• Single Profile with a recording interval programmable from 1s to 1 hour. It can be ma-

nual or automatic.

• Continuous Multi Profile, with 1s recording interval or at intervals programmable from

10s to 1 hour.

The storages are saved, for all the active channels, in the internal FLASH memory of the
analyzer or in the memory card, following the setting of the parameter Menu >> Parame­ters>> Instrument >> Input/Output >> Memory.

Each recording is preceded by a summary screen reporting:

• the memory where the data are going to be saved (memory card or internal Flash

memory);

• the sequential number that identifies the block of data;

• date and time;

• size of the file and memory space available.

Pressing the STORE key (right arrow on the keypad), the data are saved.

Pressing the EXIT key (left arrow of the keypad), the instrument exits without saving
and returns to measure mode.

Pressing the COMM. key (CURSOR key on the keypad), it is possible to save the data file
adding a voice comment by connecting a microphone to the appropriate input on the front of
the instrument.

Setting the parameter Menu >> Parameters >> Data Logger >> Profiles >> ADC Chan­nels, it is also possible to store in the HD2070 analyzer’s memory (in parallel with the storage
of measurement parameters) the accelerometers row signals (option HD2070.O3). The para­meter allows to select among the recording of all the three channels of the analyzer o only one
of the three channels. The direct recording of the ADC channels can be activated only in the
memory card and it is not available for the internal FLASH memory of the analyzer.

The Auto-Store function allows to automatically store the global parameters, i.e.
integrated in all the measurement time.

To activate the recording of the global parameters, it is used the parameter Menu >> Pa­rameters >> Data Logger >> Global >> Auto-Store.

Stored parameters are defined in the menu: Menu >> Setting >> Data Logger >> Glob­al. Together with the global parameters are also recorded the average spectrum (option
HD2070.O1) and the statistics (option HD2070.O2).

DATA RECORDING

MEMORY CARD

Record N. 00001

2009/01/31 12:00:00

Dim: 3KB Disp: 6.7%

COMM. EXIT STORE

- 29 -

SINGLE RECORD

In this mode it is possible to memorize in a single record, the values visualized in the
VLM, SPECTRUM (option HD2070.O1), PROBABILITY and PERCENTILES screens (option
HD2070.O2).

Manual Recording “Single record”

Data are saved manually pressing the REC key for at least two seconds. This op­eration is allowed when the instrument is in STOP mode.

Are stored:

• two VLM_1 and VLM_2 screens, whose measurement parameters are defined in Menu >>

Parameters>> Vibration Analyzer.

if HD2070.O1 “Spectral analysis” option is installed:

• the average spectrum in octave or third octave bands, according to parameter Menu >>

Parameters >> Spectrum Analyzer>> Order: ….integrated on the measurement time;

if HD2070.O2 “Statistical analysis” option is installed:

• probability distribution of chosen parameter in the profile screen (Menu >> Parameters

>> Vibration Analyser >> Profile:);

• percentile levels from L1 to L99 of chosen parameter in the profile screen.

Automatic Recording “Single record”

To activate the automatic recording, enable from the menu the Auto-Store parameter:
Menu >> Parameters >> Data Logger >> Global>> Auto-Store = ON.

The display shows the activation of the Auto-Store function with the alternated blinking
of the REC and STOP symbols.

Measurement starts pressing START/STOP key and data are automatically recorded
at the end of Tint integration interval previously set or pressing directly the STOP
key, before the Tint interval is elapsed,.

They will be recorded :

• the two screens VLM_3 and VLM_4 (whose measurement parameters are defined in

Menu >> Parameters >> Data Logger >> Global)

if option HD2070.O1 “Spectral analysis” is installed:

• the average spectrum, integrated in the measurement time, in octave and third oc-

tave bands, according to parameter Menu >> Parameters >> Instrument >>
Spectrum Analyzer >> Order.

if option HD2070.O2 “Statistical analysis” is installed:

• Probability distribution of chosen parameter in the profile screen (Menu >> Para-

meters >> Vibration Analyzer >> Profile).

• Percentile levels from L1 to L99 of chosen parameter in the profile screen.

SINGLE PROFILE

This mode allows recording the time profile of the measurement parameter se­lected in the PROFILE screen. The parameter is recorded at programmable intervals from

1s to 1 hour.
To make a manual recording of a Single Profile set:

• The single integration mode: Menu >>Parameters >> Instrument >> Measurement>>

Integration Mode: SING

• The sampling interval of the time profile: Menu >> Parameters >> Instrument >> Mea-

surement >> Profile Step: from 1 second to 1 hour.

- 30 -

• The measurement time: Menu >>Parameters >> Instrument >> Measurement >> In-

tegration time: from 1 second to a maximum of 99 hours.

• The recording mode: Menu >>Parameters >> Data Logger >> Profiles >> Mode: PRO-

FILE

• The parameter whose time profile has to be acquired: Menu >>Parameters >> Vibration

Analyzer >> profile, choosing among those available.

The recording starts pressing at the same time REC and START/STOP keys, and
stops when the set measurement time Tint expires or pressing the START/STOP key.

During the acquisition it is possible to temporarily pause the instrument pressing the
PAUSE/CONTINUE key and start again the recording pressing a second time the same key.

In the recording it is also possible to add markers that will are saved together with the
profile and that can be visualized with the Noise Studio software.

There are 9 available markers, each of them with maximum 15 characters.

To insert a marker, press the REC key during the recording: with the UP and DOWN ar­rows choose one of the 9 markers and confirm with the REC key. Press the ESC key to exit
without memorizing the marker.

It is possible to assign a name to a marker from the instrument menu (see “Menu >> Pa­rameters>> Data Logger >> Profiles” in “DESCRIPTION OF THE MENU FUNCTIONS” chapter)
or by using the Noise Studio software.

Automatic recording of a single profile

If the Auto- Store function is enabled (Menu >> Parameters>> Data Logger >> Global
>> Auto-Store = ON), at the end of chosen parameter’s time profile storage, a single record is
recorded containing:

• two screens VLM_3 and VLM_4 whose measurement descriptors are defined in Menu >>

Parameters >> Data Logger >> Global;

If option HD2070.O1 “Spectral analysis” is installed:

• the average spectrum, integrated on the measurement time, in octave or third octave

bands, according to the setting Menu >> Parameters >> Spectrum Analyzer >> Order;

If option HD2070.O2 “Statistical analyser” is installed:

• probability distribution of the chosen parameter in the profile screen (Menu >> Parame-

ters >> Vibration Analyser >> Profile);

• percentile levels from L1 to L99 of the chosen parameter in the profile screen.

MULTI PROFILE
This mode allows to memorize the time profile of several parameters.

Two recording modes are provided: one continuous and one at intervals, corresponding
respectively to the setting of the single and multiple integration mode (parameter Menu >>
Parameters >> Instrument >> Measurement >> Integration Mode).

2012/06/10 10:00:00

STORING

MARKER

1 TITLE_MARKER1

EXIT

- 31 -

To perform a Multi Profile recording, set the following parameters:

• The integration mode: Menu >>Parameters >> Instrument >> Measurement >> Inte-

gration Mode: SING or MULT.

• Recording mode: Menu >>Parameters >> Data Logger >> Profiles >> Mode: FULL

The measurement parameters that are memorized are indicated in the following table.

Parameter

MULTI PROFILE

Single Integration Multiple Integration

VLM_1 and VLM_2 screens:

- 3 parameters single axis

- 3 parameters for sum and
maximum value vectors

X X

SPECTRUM screen: octave
or third-octave band spec­trum (requires HD2070.O1
“Spectral analysis” option)

X X

STATISTIC and PERCENTILES

screens: statistical analysis
in 1dB classes with 1 second
sampling frequency (re­quires HD2070.O2
“Statistical analysis” option

--- X

Integration interval and cal­culation

1 second

Programmable from 10s to 1
hour (Parameters >> Instru­ment >> Measurement >>
Int. Integration)
with automatic reset of the
parameters at the beginning
of each interval.

The Multi Profile recording with single integration allows to memorize every second:

• The 3 instant or integrated parameters of the VLM_1 screen calculated for all the

measurement channels

• The 3 parameters of the VLM_2 screen calculated on the vector formed by the three

channels

• The spectrum, in octave or third-octave bands (with option HD2070.O1 ).

The Multi Profile mode with multiple integration records, at intervals equal to the set inte­gration time Tint (from 10 seconds to 1 hour):

• The 3 instant or integrated parameters of the VLM_1 screen calculated for all the

measurement channels

• The 3 parameters of the VLM_2 screen calculated on the vector formed by the first three

channels (RIGHT input)

• The spectrum, in octave or third-octave bands (with option HD2070.O1)

• The statistical analysis in classes of 1dB with 1 second sampling interval (with option

HD2070.O2).
All the measurement parameters, the spectra and the statistics are automatically reset at the
beginning of each interval.

The continuous recording starts by pressing simultaneously the REC and
START/STOP keys.

In the single integration mode, the acquisition stops when the set integration
time Tint is elapsed (Menu >> Parameters>> Instrument > Measures > Int. Integration) or
pressing the START/STOP key.

In the multiple integration mode, the recording must be ended manually
pressing the START/STOP key.

During the acquisition it is possible to temporarily pause the instrument pressing the
PAUSE/CONTINUE key and start again the recording pressing a second time the same key.

- 32 -

In the recording it is also possible to add markers that are saved together with the pro­file and that can be visualized with the Noise Studio software.

There are 9 available markers, each of them with maximum 15 characters.

To insert a marker, press the REC key during the recording: with the UP and DOWN ar­rows choose one of the 9 markers and confirm with the REC key. Press the ESC key to exit
without memorizing the marker.

It is possible to assign a name to a marker directly through the instrument menu (see
“Menu >> Parameters >> Data Logger >> Profiles” in “DESCRIPTION OF THE MENU FUNC­TIONS” chapter) or by using the Noise Studio software.

If the Auto-Store mode is enabled (Menu >> Parameters >> Data Logger >> Global >> Au­to-Store = ON) at the end of the Multi Profile storage, a single record is stored containing:

• two screens VLM_3 and VLM_4 whose measurement parameters are defined in Menu >>

Parameters >> Data Logger >> Global;

If HD2070.O1 “Spectral analysis” option is installed:

• the octave or third octave average spectrum, calculated on the measurement time, ac-

cording to the setting Menu >> Parameters >> Spectrum Analyzer >> Order

if HD2070.O2 “Statistical analysis” is installed:

• the probability distribution of the chosen descriptor in the profile screen (Menu >> Para-

meters >> Vibration Analyser >> Profile);

• percentile levels from L1 to L99 of the parameter chosen in the profile screen.

RECORDING OF A VOICE COMMENT

The HD2070 can be used as an audio recorder connecting an external microphone (code
HD2030AM) at the MIC input. The recording can be saved as single audio file or it can be asso­ciated with a data file as voice comment.

To record audio only, keep the REC key pressed for at least two seconds when the in­strument is in STOP mode. The following screen appears:

2012/06/10 10:00:00

STORING

MARKER

1 TITLE_MARKER1

EXIT

WARNING !

RECORDING OF

ESC VOICE DATA

- 33 -

Press the VOICE key. The recording starts. To finish the operation, press the STOP key.

To add a voice comment to a data file, connect a microphone to the appropriate MIC
input on the instrument front and, when you are going to save, press the COMM (voice com­ment) key.

To end the voice comment recording and save the data file, press the STOP key.

The recordings can be listened directly from the instrument equipped with headphones or
through the Noise Studio software.

See the details in the Memory Navigator Program description at paragraph “4 to listen vocal
commentaries”).

DATA RECORDING

MEMORY CARD

Record N. 00001

2012/06/10 12:00:00

Dim: 3KB Disp: 6.7%

COMM. ESC SAVE

- 34 -

PROGRAMS DESCRIPTION

The HD2070 analyzer has several programs that are accessed by Menu>> Programs. To
start a program, select it with the UP and DOWN arrow keys and press ENTER.

The programs available are:

• Memory Navigator: it allows to examine what it is stored in the internal FLASH memory

of the instrument and in the memory card. It is also possible to listen to the audio re-

cordings and the vocal commentaries associated with the data files using the

headphones.

• Setup Management: it allows to save or load the analyzer settings. To facilitate the

choice, each setup has a title.

• Calibration: it sets the sensitivity of the accelerometers connected to the instrument,

both through manual input of the calibration values and through the measurement of the

acceleration produced by a vibrations generator.

• Diagnostic Check: it checks the main functions of the instrument.

• Sensors Config.: input and modification of the parameters of the sensors that can be

connected to the analyzer.

• Initialize MC: it deletes the data in the memory card and set it for the use with the

HD2070.

MEMORY NAVIGATOR PROGRAM

The Memory Navigator Program allows to operate in the internal FLASH memory and in
the external Memory card.
To enter the Memory Navigator Program, press the MENU key: Menu >> Programs >> Memo­ry Navigator.
If the Memory card is present, the following screen appears:

Press the FLASH or MC keys to respectively manage the internal memory of the instru­ment or the memory card.

MEMORY NAVIGATOR

select memory

unit

EXIT FLASH MC

- 35 -

If there is no Memory Card, the following screen appears:

In the internal FLASH memory it is possible:

• to review the memorized files.

• to copy the single recording or all the files from the internal memory to the memory

card.

• to erase all the memory content. It is not provided the possibility to erase single

files in the internal memory.

In the Memory Card it is possible:

• to review the memorized files.

• to listen to the vocal recordings.

• to erase single files contained in the Memory Card. To erase all the Memory Card con-

tent, run the program “Menu >> Programs >> Initialize MC”, as described below.

Note: the deleted files in the Memory Card are still in the card memory, even if new recordings
are added; this allows an eventual recovery through the Noise Studio software supplied with
the analyzer.

To clear the Memory Card it is always possible to use the program "Format Memory
Card" in the Noise Studio software. See the chapter “USE OF THE EXTERNAL MEMORY CARD".

1) To review a file saved in the internal Flash memory

From measure mode, press in sequence the buttons: Menu>> Programs>> Memory Na­vigator and select the internal Flash memory.

The following screen appears:

Press the READ key: the display shows the characteristics of the first file in memory.

FLASH NAVIGATOR

Batt: 80% Mem: 75%

BACK EDIT READ

FLASH NAVIGATOR

Batt: 80% Mem: 75%

BACK EDIT READ

- 36 -

To scroll the memory and display the properties of the other files, press the RIGHT ar­row key. After the last file is visualized, the display returns to the starting screen.
The properties of a file in the memory appear like in the following example:

For each file are indicated:

• Type indicates the file type: single report (SING), single profile (PROF) or multi profile

(REP).

• Int.T is the integration interval.

• N is the sequential number that identifies the file.

• Tm represents the total recording time.

To visualize the current file content, press the ENTER key: the STOP symbol alter­nates with the R letter (Replay).

During the replay it is possible to use the MODE key to display the different measure
modes: VLM, PROFILE, and with related options, SPECTRUM, PROBABILITY, PERCENTILES.

In the same way, with the CHN key it is possible to scroll the different measurement
channels.
To stop or start again the review, use the PAUSE/CONTINUE key.

While the replay is paused, it is possible to visualize the next data pressing the START
key.
If the START key is hold pressed in pause mode, the fast replay mode is entered.
At the end the instrument enters the STOP status.

To exit from REPLAY mode, press the MENU key.

The review operation mode depends on the memorized file type (see the chapter

“RECORDING MODES”):

• “Manual single record” Recording

The file is “Single Report” type: when the ENTER key is pressed, the parameters of the

VLM_1 and VLM_2 screens are automatically loaded and displayed.

• “Automatic single record” Recording

For the recording the Auto-Store function has been enabled, the file is “Single Report”

type: When the ENTER key is pressed, the global parameters of the VLM_3 and VLM_4

screens are automatically loaded and displayed.

• “Manual Single profile” Recording

The time profile of a single parameter has been memorized. Pressing the ENTER key, the

display shows the Profile screen with the timer at 0.

FLASH NAVIGATOR
Batt: 80% Mem: 75%
Type Int.T N.
SING 00s 00001
2012/06/10 15:00:00
Tm:00:02:05

BACK COMM. COPY

- 37 -

When the START key is pressed, the profile is reviewed automatically. It is possible to
switch from a measurement channel to another one with the CHN key but there are no other
active screens because this mode records only the time profile of the three channels.

• “Manual Single Profile Recording” with Auto-Store

A single profile recording enabling the Auto-Store function was done. When the ENTER

key is pressed, the global parameters of the VLM_3 and VLM_4 screens are automatically

loaded and displayed: the GLOBAL indication appears at the top of the display. If specific

options are installed, with the MODE key it is possible to scroll the spectrum, probability

and percentiles screens calculated on the global parameters:.

Pressing the START key, the profile is reviewed automatically. It is possible to switch

from a measurement channel to another one with the CHN key.

• “Multi profile with single integration” Recording

A multi profile recording with single integration mode was done. The data file includes

the VLM_1 and VLM_2 screens and the spectrum (with HD2070.O1 option). When the

ENTER key is pressed, the instrument goes into VLM_1 screen: at the top it appears the

indication “PROFILE”.

Pressing the START/STOP key, the data replay starts. With the MODE key it is possible to

switch from a screen to another one, with the CHN key from a measurement channel to

another one.

• “Multi profile with multiple integration” recording

A multi profile recording with multiple integration mode was done. The data file includes

the VLM_1 and VLM_2 screens and eventually the spectrum and the statistics (option

HD2070.O1 and HD2070.O2 respectively).

- 38 -

When the ENTER key is pressed, the instrument goes into VLM_1 screen: at the top ap-

pears the indication “REPORT”.

The “Tint=” tag blinks indicating that the integration is MULTI. When the START/STOP

key is pressed, the instrument displays the data related to the first integration interval

and enters the pause mode. With the MODE key it is possible to switch from a screen to

another one, with the CHN key from a measurement channel to another one. While the

replay is paused, it is possible to display the following data pressing the START key.

Holding pressed the START key while in pause mode, the fast replay mode is entered.

Pressing the PAUSE/CONTINUE key, the review proceeds up to the end.

• “Multi Profile with single or multiple integration with Auto-Store” Recording

The two previous modes can be integrated during the recording phase with the addition

of the Auto-Store function: in this case, when the ENTER key is pressed, the global pa-

rameters of the VLM_3 and VLM_4 screens are automatically loaded and displayed; the

GLOBAL indication appears at the top of the display. With the MODE key it is possible to

switch from spectrum, probability and percentiles screens.

Pressing the START key, the parameters are reviewed as described in the previous two

points.

- 39 -

2) To review a file saved in the Memory Card

From measure mode, press in sequence the keys: Menu >> Programs >> Memory Navigator.

If a Memory Card is present, it appears the screen to select the memory to review: press
MC to select the Memory Card.

The following screen with the file list appears:

Note: the first file of the list called “CAL” is the file of sensors calibration. It is a read/write pro­tected file, no operations are allowed on this file.
With the UP and DOWN arrow keys, select the file to be visualized and press ENTER.
The properties of the selected file are indicated:

For each file are indicated:

• The sequential number in the browser file list (“0001” in the example, next to “Proper-

ties”).

• three characters code (“AAD” in the example) with the following meaning:
o The first character identifies the recording type:

 S Single type recording

PROPERTIES 0001-AAD

#0003 Tipo: REP
2012/01/31 15:00:00
2012/01/31 15:05:00
Tm:00:05:00 44KB

RET.

MC NAVIGATOR
NAME DATE TIME
CAL 2012/01/01 10:00
0001 2012/01/31 15:00
0002 2012/02/28 16:00
0003 2012/03/31 17:00

BACK CLEAR.

FLASH NAVIGATOR

select memory

unit

EXIT FLASH MC

- 40 -

 A Auto-store type recording
 M Multi type recording
 R Report type recording
 V Audio file recording. In this case the second character is A.

o The second character, if present, can be A only; it identifies a vocal recording or a

file with a voice comment attached.

o The third character, if present, can be D only; it identifies a file that includes the

ADC channels data.

• # is the sequential number given to a specific file and identifying it.

• Type indicates the file type: if single report (SING), single profile (PROF) or multi profile

(REP). If there is also an audio comment, the “+AUDIO” indication appears.

• Date and time of file opening.

• Date and tome of file closing.

• Tm represents the total recording time. On the side it is indicated the file size.

To display the content of the current file, press the ENTER key: the STOP symbol

alternates with the R letter (Replay).

During the replay it is possible to use the MODE key to visualize the different measure-

ment modes: VLM, PROFILE, SPECTRUM, PROBABILITY, PERCENTILES.

In the same way, with the CHN key it is possible to scroll the different measurement

channels.

For the details on how to proceed to visualize the memorized data, see the detailed

description reported in the previous point.

To exit from REPLAY mode, press the MENU key.

3) File management in the internal Flash memory

The allowed operations on the files stored in the internal memory are the copy of a file or
of the entire internal memory into the Memory Card, and the memory clear. It is not possible
to delete single files in the internal memory.

Press in sequence the keys: Menu >> Programs >> Memory Navigator.

It appears the screen:

Press the FLASH key to access to the internal memory of the instrument.

MEMORY NAVIGATOR

Select memory

unit

EXIT FLASH MC

- 41 -

Press the EDIT. key to enter the submenu for the management of the memorized files.

With the CLEAR Key all the FLASH memory content is deleted.
With the COPY key all the FLASH memory content is copied into the Memory Card.

When one of the two keys is pressed, the instrument asks to confirm the selected opera­tion, pressing YES.

To copy a single file from the internal memory into the Memory Card, select in
sequence the keys: Menu >> Programs >> Memory Navigator.

It appears the screen:

FLASH NAVIGATOR

Batt: 80% Mem: 75%

BACK EDIT READ

FLASH NAVIGATOR

Batt: 80% Mem: 75%

BACK CLEAR COPY

FLASH NAVIGATOR

Batt: 80% Mem: 75%

CONFIRM

MEMORY CLEAR?

YES NO

FLASH NAVIGATOR

Batt: 80% Mem: 75%

CONFIRM COPY OF

SELECTED FILES ON MC?

YES NO

- 42 -

Press the FLASH key to access to the internal memory of the instrument.

Press READ and with the UP and DOWN arrow keys select the file to copy.

Press the COPY key and confirm the operation in the next screen.

Press YES to copy, NO to go back to the previous screen without copying.

MEMORY NAVIGATOR

select memory

unit

EXIT FLASH MC

FLASH NAVIGATOR

Batt: 80% Mem: 75%

BACK EDIT READ

FLASH NAVIGATOR
Batt: 80% Mem: 75%
Type Tint. N.
SING 10s 00001
2012/06/30 15:00:00
Tm:00:02:05

BACK COMM. COPY

FLASH NAVIGATOR

Batt: 80% Mem: 75%

CONFIRM COPY OF

SELECTED FILE TO MC?

YES NO

- 43 -

4) To listen to the vocal comments

The audio commentaries can be listened again through Noise Studio Software or directly

from the HD2070 if equipped with headphones (code HD2030AM).

• Connect the headphones to the appropriate connector on the front of the instrument.

• Select in sequence the keys: Menu >> Programs >> Memory Navigator.

• Select the internal memory bank (FLASH) or the external Memory Card (MC).

• Select with the UP and DOWN arrow keys the file with the voice comment and press EN-

TER to load it.

• Press the COMM key to listen to the voice comment.

• With the << and >> arrows of the keypad it is possible to adjust the volume of the

headphones.

• Press STOP to finish in advance the listening of the voice comment.

• Press RET. to go back to the main screen of the Browser.

End of the procedure.

- 44 -

SETUP MANAGEMENT PROGRAM

This program allows to choose one of the 10 reference setups stored in the HD2070 ana-

lyzer. To rapidly identify the desired one, to each setup is associated a specific title.

The PC software Noise Studio allows to edit the setups, to save them into the PC memory

and to load into the instrument memory the ones you want to use.

Each setup is associated with a configuration of the sensors (see the Sensor Configura-

tion Program).

Once the setup is loaded in the instrument, it is possible to manually modify the settings,
including the sensors configuration: once edited the setup can be stored inside any of the 10
reference setups.

Note: to proceed with the creation of a new setup to load in the instrument, it is necessary to
have installed in the PC the Noise Studio software.

1) How create a new setup with Noise Studio Software

Proceed in the following way:

• Connect the analyzer to the PC with the serial or USB cable.

• Start the Noise Studio software.

• Press Instrument management key in Noise Studio: start the connection with the Con-

nect key (for details on how to connect, see the software manual).

• Press the Instrument configuration tool in Noise Studio: the software downloads the cur-

rent settings of the analyzer.

• Modify the General, Channels and Sensors screens in Noise Studio according to your

needs:

o In the General screen the system, input/output and measure parameters can be

set.

o In the Channels screen the measurement variables for the different screens

(VLM, profile, spectra, global parameters), the recording modes and the trigger
can be selected.

o In the Sensors screen the accelerometers to use during the test can be

configured. Insert all the parameters and save the configurations pressing the
Save Config. Key, assigning to each configuration a number from 1 to 9 (see in
the following of this chapter the Sensors Configuration Program).

• Select the Predefined screen and press Save Current Settings: insert a name and a

description (optional) to identify the setup.

• Press the “Copy custom settings in the predefined setups of the instrument” key. In this

way the just created setup is added to the setups list in the memory of the instrument

and can be selected directly from the instrument menu, without the need to connect in-

strument to a PC.

• To make the current setup active, push Apply All key in Noise Studio.

The setup is loaded into the instrument memory, ready to be used.

2) How to load a new setup

To apply a setup previously stored in the instrument’s memory, press the following sequence
of keys: MENU >> Programs>> Setup Management.

• With the UP and DOWN arrows select the setup to apply: press ENTER to confirm.

• In the following screen, press the LOAD key to apply the settings of the new setup.

- 45 -

• The next screen visualizes the setup features of the sensor for the RIGHT input:

• Press SEL to confirm, PREV or NEXT to scroll the list of the sensors that are in the

memory.

Now the instrument is ready to perform a new measurement.

3) How to save an instrument configuration into a setup

A special configuration of the instrument can be saved in one of the ten setups available
in the memory to be recalled at later time.
Proceed as follows:

• Select through the menu the different instrument parameters, the sensors configuration,

the measurement and recording modes.

• It is possible to start from an already memorized setup, loading it in the memory as

described in the previous paragraph.

• Press in sequence the keys: MENU >> Programs >> Setup Management.

• With the UP and DOWN arrows, select the setup number to be assigned to the new confi-

guration: the current configuration will be overwritten by the new one so do not select a

setup you want to keep. Press ENTER to confirm.

• It appears the screen with the name of the current setup that will be overwritten by new

one.

SETUP MANAGEMENT

2012/05/30 12:00:00

SETUP N.01
TEST_001
2012/05/01 10:00:00

BACK STORE LOAD

CONFIG RIGHT. #02
PROD: DELTA OHM
MOD: ACC_TRI
S.N.: 123456
TYPE: ACC TRI
SENS: 10mV/g CAL
RANGE: 500 gpk

SEL. PREV. NEXT

- 46 -

• Press the STORE key.

• The screen for the input of the title to apply to the new setup appears:

• With the UP and DOWN arrows, select the first character and confirm it with ENTER.

• The cursor skips to the second character.

• Repeat the selection with the UP and DOWN arrows and confirm with ENTER. Proceed in

the same way for the other characters of the title.

• Inserting a SPACE (blank) the remaining characters of the title are cancelled.

• Press RET to save.

• Press ESC to exit from the Setup Management program

4) How to modify a setup in the memory

The setups in the memory can be changed directly through the menu of the instrument

(for the change of a setup through the Noise Studio Software, see point 1 of this paragraph).

Proceed in the following way:

• Start the setup management program pressing in sequence the keys: MENU >> Pro-

grams >> Setup Management.

• Load the setup to modify following the steps indicated in point 2 if this paragraph.

• Modify the instrument configuration as desired (for example: displayed units, parameters

of the menu, recording mode,….).

• Go back to the setup management program pressing in sequence the keys MENU >>

Programs >> Setup Management. With the UP and DOWN arrows select again the setup
previously loaded and confirm with ENTER.

• In the following screen, press the STORE key.

TITLE OF SETUP #01

D
C
B
ANNNNNNNNNNNNNNNNNN

BACK

SETUP MANAGEMENT

2009/01/31 12:00:00

SETUP N.07
TEST_007
2009/01/01 10:00:00

BACK STORE LOAD

- 47 -

• The new settings are saved in the place of the previous ones.

• It appears the screen for the input of the title to apply to the updated setup:

• If it is desired to maintain the name of the previous setup, press RET and then ESC to

exit from Setup management, otherwise, with the UP and DOWN arrows, select the first
character and confirm it with ENTER.

• The cursor skips to the second character.

• Repeat the selection with the UP and DOWN arrows and confirm with ENTER. Proceed in

the same way for the other characters of the title.

• Inserting a SPACE (blank) the remaining characters of the title are cancelled.

• Press RET to save.

• Press ESC to exit from the Setup Management program.

The setup modification procedure is completed.

CALIBRATION PROGRAM

This program calibrates the sensors connected to the HD2070 analyzer.
It is possible to manually insert the calibration parameters of the accelerometers using
the values indicated on the certifications or calibration charts, or using a vibrations generator
specific for the calibration of the accelerometers.

The calibration parameters are saved in an dedicated log file where the last 120 calibra­tions performed are stored. When the instrument is connected to the PC through the Noise
Studio software, this file is automatically downloaded and saved in the PC as a reference for
the documentation of the measurements performed with the instrument.

Any measurement made with the HD2070 analyzer, therefore, will be associated with a
calibration according to the date.

1) Calibration of a sensor through the direct input of parameters

If the sensor’s calibration data are available, proceed in the following way:

SETUP MANAGER

2009/01/31 12:00:00

SETUP N.01
TEST_001
2009/01/01 10:00:00

BACK STORE LOAD

TITLE OF SETUP #01

D
C
B
ANNNNNNNNNNNNNNNNNN

RET.

- 48 -

• Start the sensor’s calibration program pressing sequentially the keys: MENU >> Pro-

grams >> Calibration.

• It appears the same screen that is shown at instrument’s startup; the current data are

displayed

• Manufacturer

• Type

• Name

• Serial number

• Sensitivity in mV/g

• To insert manually the sensitivity, press the SENS key.

• If the sensor is triaxial type, a sensitivity for each axis must be inserted: with the UP and

DOWN arrows select the first axis and confirm with ENTER.

• The following screen appears:

• With the UP and DOWN arrows modify the proposed value and press ENTER. At the fol-

lowing request of confirmation, press again ENTER.

CALIBRATION
DELTA OHM ACC_TRI
ACC_T 123456
Axis: 1
SENS: 10mV/g Axis: 1

Calibration Type

EXIT SENS. MEAS.

CALIBRATION
DELTA OHM ACC_TRI
ACC_T 123456
Axis: 1

10.15mV/g

Sensitivity +-

BACK

CALIBRATION
DELTA OHM ACC_TRI
ACC_T 123456

SENS: 10mV/g

calibration type

EXIT SENS. MEAS

- 49 -

• Select the other axes and proceed in the same way. Press BACK To go back to main

screen.

• If the sensor is monoaxial there is a single sensitivity value to input.

• With the UP and DOWN arrows change the proposed value and press ENTER. At the fol-

lowing request of confirmation, press again ENTER. Press BACK key to go back to main
screen

• From the main screen, press ESC to exit from the calibration program.

2) Calibration of a sensor through the vibrations generator

If a calibrator is available, proceed in the following way:

• Set the acceleration level of the calibrator through the item Menu> Parameters > Cali-

bration.

• Start the sensors calibration program pressing in sequence the keys: MENU >> Programs

>> Calibration.

• It appears the same screen that is shown at instrument’s startup; the current data are

displayed

• Manufacturer

• Type of accelerometer

• Name

• Serial number

• Sensitivity in mV/g

CALIBRATION
DELTA OHM ACC_TRI
ACC_T 123456
Axis: 1
SENS: 10mV/g Axis: 1

Calibration Type

EXIT SENS. MEAS.

CALIBRATION
DELTA OHM ACC_MON
ACC_M 654321

100.5mV/g

Sensitivity +-

BACK

- 50 -

• Apply the transducer to the calibrator and press the MEAS key: the level that appears is

the calibrator nominal value.
With the RIGHT and LEFT arrows the measure unit can be changed between g and m/s

2

.

• If the sensor is triaxial type, the three axes have to be calibrated separately: with the UP

and DOWN arrows select the first axis and confirm with ENTER.

• The following screen appears:

CALIBRATION

Level 10.00 m/s

2

Axis: 1

Select axis

BACK

CALIBRATION

Level 10.00 m/s

2

A1s Fz

---- m/s

2

Turn On

the calibrator

NEXT EXIT

CALIBRATION
DELTA OHM ACC_TRI
ACC_T 123456

SENS: 10mV/g

calibration type

EXIT SENS. MEAS

- 51 -

• Switch on the calibrator and press FORWARD.

• The instrument verifies that the signal level is stable and then asks to confirm the

measured value.

• Pressing YES the current value is memorized.

• If the sensor is triaxial, the same procedure has to be repeated for the other two axes:

repeat the operation from the beginning.

• From the main screen, press ESC to exit from the calibration program.

DIAGNOSTIC CHECK PROGRAM

This program perform a check of the main functions of the HD2070 analyzer.

The following functional parameters are checked, in automatic sequence:

• Power Supply: it checks that the voltage supplied to the instrument allows the measure-

ments execution. If this point fails, replace the batteries and repeat the test.

• IEPE Power Supply: it checks that the power supply of the accelerometers is within the

technical specifications.

• Accelerometers Polarization: it checks that the polarization voltage of the connected ac-

celerometers is within the technical specifications.

• DSP Working: it checks that the analog to digital conversion and the DSPs are able to

transmit the measures to the microprocessor.

• Environmental Parameters: it checks that the environment temperature is within the

working specifications of the analyzer.

When one of the checks fails, it is displayed the list of the checks done and the steps that

failed.

In this case it is always suggested to repeat the diagnostic check and, in case of

confirmation, contact the technical service.

CALIBRATION

Level 10.00 m/s

2

A1s Fz

9.985 m/s

2

Waiting for level

Stabilization

STOP

CALIBRATION

Level 10.00 m/s

2

A1s Fz

9.985 m/s

2

Confirm?

YES NO

- 52 -

In case of failure of the power supply test, replace the batteries before repeating the

diagnostic check.

To perform the diagnostic test, proceed as follows:

• Connect the accelerometers to the appropriate inputs and switch on the instrument.

• Start the diagnostic test pressing in sequence the keys: MENU >> Programs >>

Diagnostic check.

• The test program starts and the different steps are executed:

• At the end it is displayed the test report; if at least one of the steps failed, the message

“diagnostic error!” appears. The passed steps are marked with OK, the failed steps are
marked with NO.

• If all the steps have been completed without faults, it appears the message

“DIAGNOSTIC CHECK DONE”.

• Press EXIT. To repeat the test, enter the menu again as described above.

The test procedure is completed.

HD 2070

DIAGNOSTIC TEST

2011/10/01 10:00:00

Power supply OK
IEPE power supply OK
Accelerometer Pol TEST

EXIT

Power Supply OK
IEPE power supply OK
Accelerometer Pol. NO
DSP engine OK
Amb.Parameters OK

Diagnostic error

EXIT

HD2070

DIAGNOSTIC TEST

2011/10/01 15:30:00

Diagnostic check

done

EXIT

- 53 -

SENSORS CONFIGURATION PROGRAM

This program allows to configure the sensors that will be used for the measurements

with the HD2070 analyzer.

It is possible to memorize up to 9 different sensors.
The parameters of the sensors are saved in a specific file in the internal memory of the

analyzer and, if available, they are also stored in the Memory Card.

The requested parameters are:

• Manufacturer

• Model

• Serial Number

• Type: triaxial or monoaxial accelerometer.

• Nominal Sensitivity: accelerometer’s nominal sensitivity factor (mV/g)

• Range: the maximum acceleration value measurable (g pk)

At startup the instrument loads the file with sensor’s parameters description: with the
LEFT and RIGHT arrow keys of the keypad it is possible to scroll the different sensors, and
with the CURSOR key a sensor can be selected.

The blinking warning “NO CAL” on the right of the nominal sensitivity value indicates
that, for that sensor, the calibration data are missing: in this case the nominal sensitivity is
used.

The same process is used when a complete setup is loaded (see the Setup Management
Program description): the instrument verifies the presence of the calibration file for the se­lected accelerometer. If the sensor has been calibrated, the sensitivity parameters are loaded
automatically, otherwise it will be used the nominal sensitivity associated with the configura­tion.

Note: even if it is possible to operate directly on the instrument, the management of the sen­sors configuration can be more easily done with the PC software Noise Studio (see the details
in the software manual).

To configure the sensors, proceed as follows:

• Connect the accelerometer to the input and switch on the instrument.

• Start the program pressing in sequence the keys: MENU >> Programs>> Sensors Con-

fig..

• The following screen appears:

• With the right and left arrows, select the sensor among the nine available.

• With the UP and DOWN arrows, select the row to change.

• Press ENTER to go to the parameter of the selected row.

• With the UP and DOWN arrows, set the desired value.

• Press ENTER to confirm.

• Repeat for all the parameters.

CONFIG. RIGHT. #01
PROD: DELTA OHM
MOD: ACC_ABC
S.N.: 654321
TYPE: ACC TRI
SENS: 10mV/g CAL
RANGE: 500 gpk

BACK

- 54 -

• Press BACK (CURSOR key) to go back to measurement mode.

The configuration process is completed.

MC INITIALIZATION PROGRAM

This program prepare the memory card for the use with the HD2070 and erases the files pre­viously stored in the card. For the details see the chapter dedicated to the memory card.

Proceed as follows:

• After inserting the card in the slot placed in the analyzer front panel, switch on the in-

strument.

• When the “MC installed and ready to use” message appears, press the RD/WR key to

enable all read and write functions.

• Start the program MENU >> Programs >> Initialize MC.

• The following screen appears

• Press YES to proceed, NO to cancel the operation.

• At the end the following screen appears:

Press RD/WR to activate all the reading and writing functions.

The card is ready for the use.

INITIALIZE MC

Batt: 90% Mem: 50%

CONFIRM

MEMORY CLEAR?

YES NO

MC installed

and ready.

Size: 1000 MB

ESC RD RD/WR

- 55 -

DESCRIPTION OF THE MENU FUNCTIONS

The menu provides all the functions to set the parameters for the instrument functioning.
The menu is entered with Menu key> Parameters.

The access to the menu is allowed also with the instrument in measure mode, while for
the modification of a parameter the instrument must be in stop mode, If not, it appears a
message requesting to stop the current measurement: WARNING! Stop the measure to
proceed”.

Pressing YES the instrument enters the STOP mode and it is possible to proceed with the
modification of selected parameter.

Some of the parameters listed in the menu (for example the integration time Tint, VLM
screen parameters,….) are editable directly from the measurement screens: see the chapter
“DESCRIPTION OF DISPLAY MODES” dedicated to the different modes of visualization.

The menu has a multi-level structure: with main categories and submenus. To select a
menu item use the UP and DOWN arrows: the selected item blinks.

If the parameter placed on the right of a menu item does not blink, it means that the
item cannot be modified.

Use the ENTER key to access the selected submenu or to modify the selected parameter.
The selected blinking parameter can be modified with the UP and DOWN arrows: to confirm
the new value, press the ENTER key, while to cancel the modifications press the MENU key.

To exit from a menu and go back to the upper level till returning to the measurement
screen, use the MENU key.

This parameter is EDITABLE

This parameter CAN’T be changed

WARNING!

Stop the measure

to proceed.

YES NO

SELECT PARAMETER
Instrument: HD2070
Serial N.: 123456789
Version: 108v3.6
Configuration: 4
Type: ACC TRI
...

- 56 -

Entering the menus, it is visualized the current date and time and, in the next line, the
remaining charge of the batteries and the memory space available. The memory space refers
to the external card, if any, otherwise to the internal Flash memory.

The message “SELECT MENU” becomes “SELECT SUB MENU” when the meter is inside a
sub menu.

The points at the end of a list indicate that there are other items following the visible
ones: to display them, press the DOWN arrow key.

Pressing MENU once, it appears the screen that allows to choose to access the Parame-
ters of the instrument or the Programs.

The following table lists the available menus for the instrument setting.

MENU DESCRIPTION

Instrument:

• Identification Identification of the instrument and configuration of the

accelerometers.

• System Date and time, type of batteries and display settings.

Reading of the accelerometers polarization voltages. Menu lan­guage setting.

• Input/Output Setting of the automatic printing. Check of the RS232, USB,

Memory card interfaces.

• Measurements General measurement settings and definition of the filters and

coefficients for the calculation of the sum vector.

Vibration Analyzer Setting of the measurement parameters for the screens: VLM_1

(single axis), VLM_2 (vector), PROFILE, STATISTICS e PERCEN­TILES.

2011/10/25 10:00:00
Batt: 95% Mem: 99.5%

SELECT MENU
Instrument
Vibration Analyser
Spectrum Analyzer
…

2008/10/25 10:00:00
Batt: 95% Mem: 99.5%

SELECT

Parameters
Programs

- 57 -

MENU DESCRIPTION

Spectrum Analyzer
(option HD2070.O1 re-

quired)

Setting of the measurement parameters of the spectrum.

Data Logger:

• Profiles

Setting of the Data Logger mode and makers.

• Global Setting of the global measurement parameters (VLM_3 and

VLM_4 screens). Auto-Store recording function.

Calibration Setup of calibrator’s reference acceleration signal.

INSTRUMENT

The Instrument menu contains all the data related to the instrument identification, some
instrument and interfaces management parameters, the input and output settings and the
global acquisition parameters. It is composed by four submenus that are described below:

Identification

It contains the information that identifies the instrument and the accelerometers.

• Instrument: instrument model.

• Serial N.: instrument serial number.

• Version: firmware version currently installed in the instrument.

• Configuration: number of the selected configuration for the available input. There are

9 configurations available. The parameter can be selected from 0 (deactivated channel)
to 9.

• Type: indicates OFF when channel is disabled, ACC TRI when a triaxial accelerometer is

connected to the input channel, or when three monoaxial accelerometers are connected
using connection cables HD2030CAB13 and HD2030CAB1B-3M.

• Manuf.: manufacturer of the accelerometer connected to the input.

• Model: model of the accelerometer connected to the input.

• Serial N.: serial number of the accelerometer connected to the input.

• Sens.: nominal sensitivity (in mV/g) of the accelerometer connected to the input.

• Memory dim: size of the instrument’s internal Flash Memory. The standard size is

8MBytes.

• Options: it indicates the installation of firmware options. The encoding of different

combinations is given in the following table.

OPTIONS CODES Description

A HD2070.O1 “Spectral analysis”

B HD2070.O3 “Digital recorder”

C

HD2070.O1 “Spectral analysis”
HD2070.O3 “Digital recorder”

D HD2070.O2 “Statistical analysis”

E

HD2070.O1 “Spectral analysis”
HD2070.O2 “Statistical analysis”

F

HD2070.O2 “Statistical analysis”
HD2070.O3 “Digital recorder”

- 58 -

OPTIONS CODES Description

G

HD2070.O1 “Spectral analysis”
HD2070.O2 “Statistical analysis”
HD2070.O3 “Digital recorder”

System

It allows to set some system parameters.

• Time: current hour.

• Date: current date in the format year/month/day.

• Vpol CH1: it indicates the polarization voltage of the accelerometer connected to the

RIGHT input channel n.1. The STOP indication, if displayed, indicates that the instru­ment is in stop mode or that the input is not connected to a sensor.

• Vpol CH2: it indicates the polarization voltage of the accelerometer connected to the

RIGHT input channel n.2. The STOP indication, if displayed, indicates that the instru­ment is in stop mode or that the input is not connected to a sensor.

• Vpol CH3: it indicates the polarization voltage of the accelerometer connected to the

RIGHT input channel n.3. The STOP indication, if displayed, indicates that the instru­ment is in stop mode or that the input is not connected to a sensor.

• Battery: it indicates the battery type installed in the instrument. It is possible to

choose between ALKALINE (alkaline batteries) or NiMH (rechargeable Nickel-metal hy­dride batteries).

• Backlight: it indicates the activation of the of the display backlit. The backlit can also

be activated or deactivated through the keyboard, holding pressed the CURSOR key
while one of the VLM screens is visualized.

• Display Contrast: it allows to adjust the display contrast. When the ambient tempera-

ture changes, the display contrast has a small variation: it can be compensated
inserting a higher value in order to increase the contrast or a smaller value to decrease
it. The value can be set from 3 (minimum) to 9 (maximum).

• Auto-Power-Off: the instrument has a function to switch itself off automatically after 5

minutes if the instrument is in STOP mode and no keys are pressed in this time interval.
Before switching itself off, the instrument emits a series of warning beeps: press a key
to avoid the switching off of the instrument.

• Language: it allows to choose the instrument’s menu language among Italian, English,

French and Spanish.

Input/Output

Submenu for the choice of the parameters related to the inputs and outputs of the in­strument.

• Printout: it activates the printing of the measured levels and it allows to choose which

data to print. When the parameter is set to OFF, the printing is disabled. In the other
cases data are automatically printed when the measurement ends. Possible settings
are: OFF indicates printing disabled, VLM for printing the numerical parameters visua­lized in the VLM screen. If option HD2070.O1 is installed, are moreover available SPC
for printing octave or third-octave bands levels and VLM+SPC for printing both. See the
chapter “DIRECT PRINTER CONNECTION”.

• TRGOUT Source: the TRGOUT output, if activated with TRGOUT=RUN, switches from

the pause level to the active level when the instrument enters the acquisition mode
(RUN). When the parameter is set to OFF, the TRGOUT output is deactivated.

• TRGOUT Polarity: the TRGOUT output can have a positive (POS) or negative (NEG)

polarity, with low or high pause level respectively.

- 59 -

• Baud Rate: this parameter allows to select the data transfer speed for the RS232serial

connection from a minimum of 300 to a maximum of 115200 baud. A higher value indi­cates a faster communication, so, if there are no other contrary indications, select
the higher possible value to speed up the data transfer. If the instrument is connected
to a printer with RS232 serial input or with serial/parallel converter, the value supplied
by the printer manufacturer must be set.

WARNING: when the serial interface is used, the communication between the
instrument and the PC (or device with serial input) works only if the Baud Rate
of the instrument and PC (or device) is the same. The supplied Noise Studio
software sets automatically the serial port of the PC: on the instrument set
“RS232 Baud Rate = 115200”.

• Memory: it allows to select the memory device where the data will be recorded. It is

possible to select between the internal memory (INT) or the SD memory card (CARD).

• Serial Device: it identifies the device connected to the serial interface.

The connection possibilities are:
 RS232: connection to a PC with COM ports or to a printer with RS232 serial interface

(for example HD40.1).

 USB: connection to a PC through USB port. The connection to the USB port of a PC

requests the installation of the specific driver included in the Noise Studio CD-ROM.

Measurement

Under the item MEASUREMENT are the general acquisition parameters.

• Application: it is possible to choose the type of measure between the vibrations

transmitted to the hand-arm system (HA), to the whole body (WB) or by buildings
(BV).

• Input Gain: select the appropriate input gain among 0dB, 10dB or 20dB, according to

the vibrations level to be measured (see the technical data).

• Integration Delay: It allows to start the measurement after a stabilization interval

settable from a minimum of 2s to a maximum of 99s.

• Integr. Mode: the instrument has two different integration modes: single (SING) and

multiple (MULT). The single mode resets the integrated levels at the beginning of the
measurement and integrates in the Tint time set in Menu>>Parameters >> Instrument
>> Measurement >> Int. Integration. At the end, the instrument stops automatically
the measure.

The multiple integration mode divides the measurement time in intervals equal to
the Tint integration time set in Menu >> Parameters >> Instrument >> Measurement
>> Int. Integration. At the beginning of each interval the integrated parameters are re­set automatically. For a description of the modes, see the “MEASUREMENT MODES”
chapter.

• Profile Step: sampling interval in the visualization of the time profile, settable from a

minimum of 1s to a maximum of 1 hour.

• Integration Time: in single integration mode, this parameter acts as a timer that

stops the display updating (HOLD), settable from a minimum of 1s to a maximum of 99
hours. If set to 0s, the timer is deactivated and the integration can only be stopped ma­nually with the START/STOP key. In the multiple integration mode, this parameter
determines the duration of each integration interval from a minimum of 10s to a maxi­mum of 1 hour.

• Meas. unit: the instrument shows in the VLM screens the acceleration levels with one

of the following measure units: m/s

2

, cm/s2, ft/s2, in/s2, g and dB (referred to 10-6

m/s

2

). When a measure unit different from dB is selected, the acceleration values in the

other screens are visualized in m/s

2

.

• CH-1: weighting filter applied to the acceleration detected in channel 1 for the calcula-

tion of the weighted acceleration.

• CH-2: weighting filter applied to the acceleration detected in channel 2 for the calcula-

tion of the weighted acceleration.

- 60 -

• CH-3: weighting filter applied to the acceleration detected in channel 3 for the calcula-

tion of the weighted acceleration.

• Coefficient 1: coefficient applied to the weighted acceleration related to channel 1 in

the calculation of the vector acceleration.

• Coefficient 2: coefficient applied to the weighted acceleration related to channel 2 in

the calculation of the vector acceleration.

• Coefficient 3: coefficient applied to the weighted acceleration related to channel 3 in

the calculation of the vector acceleration.

• High-Pass Filter: high-pass filter that cuts the frequencies below 0.6 Hz. It can be

useful to decrease the settling time of the accelerometers signal and to improve the re­sponse to vibrations with frequent pulses.

• Ch1-3 0=OFF 1=ON: the function allows to disable one or more measurement chan-

nels that, for example, are not used. The status of each channel is described by a

number: 0 (zero) indicates disabled channel, 1 enabled channel.
The three channels are indicated in the sequence CH1, CH2, CH3: to have them all ac­tive, the menu item must be Ch1-3=111. To disable for example the channel CH1, the
menu item must be Ch1-3=011. It is not allowed to disable all the channels at the

same time.

VIBRATION ANALYSER

Vibrometer Menu contains all the parameters related to the VLM_1, VLM_2 and PROFILE

screens.
These items can be modified directly in the correspondent screens as described in “DESCRIP­TION OF DISPLAY MODES” chapter.

• Par. Axis. 1 ÷ Par. Axis. 3: measurement parameters visualized in the VLM_1 screen

in relation with the measure of the acceleration values for each axis.

• Par. Vect. 1 ÷ Par. Vect. 3: measurement parameters visualized in the VLM_1 screen

in relation with the measure of the vector acceleration values.

• Profile: measurement parameter displayed in the PROFILE screen.

SPECTRUM ANALYZER (OPTION HD2070.O1)

The Spectrum Analyzer menu contains the parameters related to the spectrum calcula-

tion and visualization modes. These items, excepting the Order parameter, can be edited
directly in the Spectrum screen.

• Aux. Weighting: the frequency weighting of the wide band (overall) channel asso-

ciated with the spectrum and displayed with a vertical bar on the right part of the

display. The overall level is calculated weighting, according to the selected filter, the oc-

tave or third-octave bands levels.

• Mode: the updating mode of the octave or third-octave bands spectrum. It can be Mul-

ti-Spectra (MULTISP), maximum (MAXIMUM), minimum (MINIMUM) or Integrated

(AVERAGE). The multi-spectral mode provides a spectrum per second while the AVER-

AGE, MAXIMUM and MINIMUM modes respectively visualize the average, maximum and

minimum spectrum integrated in the measurement time.

• Order: it allows to choice the order of the displayed spectrum: 1/1 for the octave bands

spectrum and 1/3 for the third-octave bands spectrum.

• Spectrum Int.: this function of frequency integration, allows to switch from the visuali-

zation of the accelerations spectrum (by selecting OFF that is “no integration”) to the

velocity spectrum (X1: single integration) or displacements (X2: double integration).

The same setting can be obtained directly in measure mode through the arrow keys of

the keypad.

- 61 -

DATA LOGGER

In the data logger menu are contained the parameters related to the storage of the

measured data. It is composed by the two submenus Profiles and Global that are described
below.

Profiles

It contains the markers and the profile recordings settings.

• Mark1 … Mark9: represent the available markers. During the recording it is possible to

associate the markers to relevant events for the current measurement (for the details
see the chapter (“RECORDING MODES”)

To assign a name to a marker:

• Use the UP and DOWN arrows to select one of the nine markers and confirm with
ENTER.

• The first character of the marker is selected and it can be modified by pressing the
UP and DOWN arrows.

• Press the right arrow to move to the second character, use the UP and DOWN ar­rows to modify the character.

• Repeat the previous two steps for all the characters that form the marker name.

• at the end press MENU to exit from the name editing mode.

Note: the markers can also easily set using the Noise Studio software.

• Mode: they are the two recording modes available Profile and Full.

“Profile” allows to record the profile of a measurement parameter (PROFILE screen),
with the sampling interval set in “Menu >> Parameters >> Instrument >> Measure­ment >>Profile step” from 1s to 1 hour.
The second recording mode “Full”, when the integration mode is single (Menu >> Pa­rameters >> Instrument >> Measurement >> Integration Mode) allows the recording
of the profiles of displayed parameters in the VLM_1 and VLM_2 screens and, if option
HD2070.O1 is installed, the spectra every second. When the multiple integration mode
is active, if option HD2070.O2 is installed, it is also recorded the statistical analysis to­gether with the VLM_1 and VLM_2 parameters and the spectra. The recording interval is
programmable from 10s to 1 hour (Menu >> Parameters >> Instrument >> Measure
>> Integration Interval).

ADC Channels (option HD2070.O3): it sets the direct recording of samples (row sig­nals) supplied by the AD converters. Through the UP and DOWN arrows it is possible to
choose to record all the three channels (123) or only one of the three available (1--, -2­, --3). When “ADC Channels” is set on “OFF”, the ADC samples are not stored.

Note 1: it is not possible to select an ADC channel if the corresponding measuring
channel CH is disabled: enable the measuring channels selecting MENU >> Parameters
>> Instrument >> Measurement >> Ch1-3.

Note 2: storage of the ADC samples, available if option HD2070.O3 is installed,

is possible only in the Memory Card.

Global

It contains the settings related to the recording of the global measurement parameters.

• Par. Axis. 1 … Par. Axis. 3: global parameters visualized in the VLM_3 screen related

to the measurement of the acceleration levels for a single axis.

• Par. Vect. 1 … Par. Vect. 3: global parameters visualized in the VLM_4 screen related

to the measure of the vector acceleration levels.

• Auto-Store: it activates the automatic recording of global levels at the end of the mea-

surement (for the details see the chapter “RECORDING MODES”).

- 62 -

CALIBRATION

• Level: the reference acceleration value produced by the device used for the calibra-

tion of the measurement chain. The acceptable values ranges from 0.90m/s

2

to

110.00m/s

2

with a resolution of 0.01m/s2.

- 63 -

FIRMWARE UPDATE

The firmware, the program that handles all the analyzer functions, can be updated

transferring the file from a PC to the HD2070 through the serial port.
In this way it is possible to update the instrument functionality.
The updating files are available at the authorized dealers.

To proceed with the update, it is necessary to have installed in the PC the Noise Studio

software.
Refer to the on line manual of the software for the operation details.

- 64 -

FIRMWARE OPTIONS

Some of HD2070 analyzer’s functions are available as options activable after instrument
purchase.
Firmware options are described in the following table.

Code Option Description

HD2070.O1 Spectral analysis Octave and third octave spectral analysis. Average

and multispectral frequency analysis simultaneous on
all the available channels. Calculation of acceleration,
velocity and displacement. Re-calculation of one
overall weighted level from the spectrum data.

HD2070.O2 Statistical analysis Statistical analysis in 1dB classes with sampling inter-

val of 1s on one chosen parameter, calculated
simultaneously on all the three channels. Graphical
display of probability distribution and percentile levels
from L

1

to L99.

HD2070.O3 Digital recorder Digital samples recording of acceleration signals for

display, replay and advanced post processing on a
PC. Recording and storing is simultaneous with all
measuremement parameters

Options HD2070.O2 and HD2070.O3, after option purchase, can be directly activated by

the user using Noise Studio software so that it’s not necessary to send back to manufacturer.
When option is purchased, Delta Ohm provides the serial code needed for udate and linked to
the instrument.
To install the serial code, must be used the specific function “options upgrade” of Noise Studio
program. Please see online manual of Noise Studio for details.

Note: HD2070.O1 “Spectral analysis” option, requests the filters calibration and can
thus be installed only at Delta Ohm.

- 65 -

REPORTING OF LOW BATTERIES AND REPLACEMENT OF THE

BATTERIES

The battery symbol

placed in the upper right corner of the display constantly indicates
the charge status of the batteries of the analyzer. As the batteries run down, the symbol is
gradually "emptied"…

... when the battery voltage reaches the minimum value to operate correctly, the symbol
blinks. In this condition change the batteries as soon as possible.

Continuing to use the instrument, the battery voltage drops further, and the
analyzer is no longer capable of providing a proper measure; any data recording is
automatically stopped, finally the acquisition is also stopped and the instrument en­ters the STOP mode.

Below a certain level the instrument turns itself off automatically. The stored
data remain. Below a certain level of batteries charge it will not be possible to turn
on the instrument.

The charge level of the batteries is available in the main screen of the menu, expressed
as a percentage value. The item is accessed pressing the MENU key. When the level is 0%, it is
necessary to replace the batteries.
The battery symbol is replaced by a mains plug when the external power supply is con­nected.

Note: the battery symbol blinks also when it is disabled the automatic auto-switch off (Auto
Power OFF = OFF).
To replace the batteries, switch off the instrument and unscrew anti-clockwise the two
closing screws of the battery compartment cover. After the replacement of the batteries (4
batteries type AA, 1.5 V alkaline or NiMH rechargeable), close the cover screwing the two
screws clockwise. Check the date and time after the replacement of the batteries.

If the batteries replacement takes less than two minutes, it should not be necessary to
adjust the clock.

- 66 -

Instead of alkaline batteries, it is possible to use rechargeable batteries NiMH type.

To allow the analyzer to properly manage the charge level of the batteries, it must be se­lected in the menu the type of batteries used (MENU >> Parameters>> Instrument >>
System>> Battery = Alkaline or NiMH).

The external power supply does not charge the batteries: rechargeable batteries
must be charged separately with an external charger.

WARNING ON BATTERIES USE

• If the analyzer is not used for a long period of time, remove the batteries.

• If the batteries are discharged, replace them immediately.

• Avoid leakage from the batteries.

• Use watertight and good quality batteries, alkaline or NiMH.

• If the product does not turn on after the change of the batteries:

• Remove the batteries

• Wait at least 5 minutes to allow a complete discharge of the vibrations analyzer in-

ternal circuit

• Insert the missing battery: with charged batteries, the instrument should switches

itself on automatically.

INSTRUMENT STORAGE

Storage conditions of the instrument:

• Temperature: -25 ... 70 ° C.

• Humidity: less than 90% R.H. not condensing.

• In the storage avoid places where:

 The humidity is high.
 The instrument is exposed to direct radiation of the sun.
 The instrument is exposed to a source of high temperature.
 There are strong vibrations.

 There are steam, salt and/or corrosive gas.

The casing of the instrument is made of ABS plastic material and the protective band is
made of rubber: do not use solvents to clean them.

- 67 -

SERIAL INTERFACE

The instrument has a dual serial interface:RS232C and USB.

The RS232 port has an 8-pole Mini-Din connector and it can be connected to any COM
port of a PC or to a printer (e.g. the HD40.1) using the proper connection cable HD2110CSNM.

The USB port allows the connection to a USB port of a PC through the supplied cable
CP22 type A/B.

The interface selection is done through the menu item "MENU>> Parameters >> Instru­ment >> Input/Output >> Serial Dev.:

• RS232: connection through RS232 interface to a PC provided with a COM type port. For
the connection it can be supplied on request the HD2110CSNM cable, null-modem type
with female 9-pole subD connector. This cable is also usable for the connection to the
HD40.1 portable printer.

• USB: connection through USB interface to a PC that has installed the appropriate driver
VCOM. The drivers are included in the CD-ROM of the Noise Studio software. For the
connection is supplied the cable CP22.

Unlike the RS232 connection that requires no special programs for its operation, the USB
connection requires the prior installation in the PC of a special program (driver USB) provided
in the CD that is supplied with the instrument.

In the MiniDin female 8-pole connector of the instrument there are the following signals:

External view

Pin Direction Signal Description

1 Output VDD 3.3V power supply
2 Output DTE DTE ready
3 Input DCE - CD DCE ready – Carrier detect
4 Output RTS Request to send
5 Output TD Channel data reception
6 Input RD Channel data transmission

7 - GND Reference ground
8 Input CTS Clear to send

In the subD female 9-pole connector of the HD2110CSNM cable, there are the following

signals:

External view

Pin Direction Signal Description

1 DCE >> HD2070 DCE - CD DCE ready – Carrier detect
2 DCE >> HD2070 RD Channel data reception

3 HD2070>> DCE TD Channel data transmission
4 HD2070>> DCE DTE DTE ready
5 - GND Reference ground
7 HD2070>> DCE RTS Request to send
8 DCE >> HD2070 CTS Clear to send
9 HD2070>> DCE VDD 3.3V power supply

When the instrument is connected via a serial interface to an active terminal
(DCE active, for example a PC), the auto-switch off is disabled and it is not possible
to switch off the instrument.

If the analyzer is turned off, the connection to an active terminal (DCE active)
will lead to the automatic switch on.

The standard serial transmission parameters of the instrument are:

• Baud rate 115200 baud

• Parity None

• N. bit 8

• Stop bit 1

• Protocol Hardware.

- 68 -

It is possible to change the data transmission speed through the item "baudrate" in the
menu (MENU >> Parameters >> Instrument >> Input/Output >> baudrate).

The available baud rates are: 115200, 57600, 38400, 19200, 9600, 4800, 2400, 1200,
600, 300. The other transmission parameters can not be altered.

To enable the full control of the instrument through a PC, the HD2070 is equipped with a
communication protocol with a complete set of commands described in detail in the appendix.

- 69 -

MEASURE PARAMETERS

The parameters that can be displayed in the VLM and PROFILE screens are selectable
among the ones of the following lists:

VLM_1 screen: Single axis parameters.

Parameter Description

Pk instant peak value of the frequency weighted acceleration.

Pkmx Max peak value of the frequency weighted acceleration.

AeqS Time average (linear) of the frequency weighted acceleration calculated in the last

second (“running r.m.s.”):

2/1

1

2

)()(

⎟

⎟
⎠

⎞

⎜

⎜
⎝

⎛

=

∫

−tst

weqS

datA

ξξ

Where:
a

w

(ξ) is the frequency weighted single axis instant acceleration.

Aeq Time average (linear) of the frequency weighted acceleration, calculated in the
measurement time:

2/1

0

2

)(

1

⎟

⎟
⎠

⎞

⎜

⎜
⎝

⎛

=

∫

T

weq

da

T

A

ξξ

where:
a

w

(ξ) is the frequency weighted single axis instant acceleration

T is the measurement time.

A1s Time average (exponential) of the frequency weighted acceleration with time

constant of 1 second:

2/1

2

1

exp)(

1

)(

⎟

⎟
⎠

⎞

⎜

⎜
⎝

⎛

⎟
⎠

⎞

⎜
⎝

⎛

−

=

∫

∞−

t

ws

d

t

atA

ξ

τ

ξ

ξ

τ

Where:
a

w

(ξ) is the frequency weighted single axis instant acceleration

τ = 1s is the time constant of the exponential function.

A8s Time average (exponential) of the frequency weighted acceleration with a time

constant of 8 seconds.

A1smx Maximum value of the timed average (exponential) of the frequency weighted

acceleration with time constant of 1 second.

A8smx Maximum value of the timed average (exponential) of the frequency weighted

acceleration with time constant of 8 seconds.

A1smn Minimum value of the timed average (exponential) of the frequency weighted

acceleration with time constant of 1 second.

A8smn Minimum value of the timed average (exponential) of the frequency weighted

acceleration with time constant of 8 seconds.

A(1s) Equivalent value of the frequency weighted acceleration in the measurement time

referenced to 1 second:

2/1

0

2

0

)(

1

)1(

⎟

⎟
⎠

⎞

⎜

⎜
⎝

⎛

=

∫

T

w

da

T

sA

ξξ

where:
a

w

(ξ) is the frequency weighted single axis instant acceleration

T is the measurement time.

- 70 -

A(8) Equivalent value of the frequency weighted acceleration in the measurement time

referenced to 8 hours:

2/1

0

2

8

)(

1

)8(

⎟

⎟
⎠

⎞

⎜

⎜
⎝

⎛

=

∫

T

w

h

da

T

A

ξξ

where:
a

w

(ξ) is the frequency weighted single axis instant acceleration

T

8h

= 28800 is the number of seconds in 8 hours.

VDV Vibrations Dose Value in the measurement time:

4/1

0

4

)(

⎟

⎟
⎠

⎞

⎜

⎜
⎝

⎛

=

∫

T

w

daVDV

ξξ

where:
a

w

(ξ) is the frequency weighted single axis instant acceleration.

VDV,d Daily evaluation (8 hours) of the vibrations dose:

4/1

0

4

8

)(,

⎟

⎟
⎠

⎞

⎜

⎜
⎝

⎛

=

∫

T

w

h

da

T

T

dVDV

ξξ

where:
a

w

(ξ) is the frequency weighted single axis instant acceleration
T is the measurement time
T

8h

= 28800 is the number of seconds in 8 hours.

MTVV Maximum value of the time average (linear) of the frequency weighted accelera-

tion calculated in the last second.

CFeq Crest factor calculated as ratio between the maximum peak value and the time

average of the frequency weighted acceleration:

2/1

0

2

)(

1

⎟

⎟
⎠

⎞

⎜

⎜
⎝

⎛

=

∫

T

w

mx

eq

da

T

Pk

CF

ξξ

where:
a

w

(ξ) is the frequency weighted single axis instant acceleration
T is the measurement time.

CF Crest factor calculated as ratio between the instant peak value and the time

average of the frequency weighted acceleration in the last second:

2/1

1

2

)(

)(

)(

⎟

⎟
⎠

⎞

⎜

⎜
⎝

⎛

=

∫

−

t

st

w

da

tPk

tCF

ξξ

where:
a

w

(ξ) is the frequency weighted single axis instant acceleration.

CFmx Maximum value of the Crest factor CF calculated as ratio between the instant peak

value and the time average of the frequency weighted acceleration in the last
second.

VDVr Ratio between the vibrations dose value (VDV) and the time average (linear) of

the frequency weighted acceleration in the measurement time:

2/1

0

2

)(

1

⎟

⎟
⎠

⎞

⎜

⎜
⎝

⎛

=

∫

T

w

r

da

T

VDV

VDV

ξξ

where:
a

w

(ξ) is the frequency weighted single axis instant acceleration
T is the measurement time.

- 71 -

MTVVr Ratio between the maximum value calculated in the last second (MTVV) and the

time average (linear) of the frequency weighted acceleration calculated in the
measurement time:

2/1

0

2

)(

1

⎟

⎟
⎠

⎞

⎜

⎜
⎝

⎛

=

∫

T

w

r

da

T

MTVV

MTVV

ξξ

where:
a

w

(ξ) is the frequency weighted single axis instant acceleration
T is the measurement time.

OL Percentage of time with “overload”.

UR Percentage of time with “under-range”

VLM_2 screen: Parameters referred to the acceleration vector.

Parameter Description

Pk Instant peak value of the frequency weighted acceleration:

)()()()(

2

3

2

3

2

2

2

2

2

1

2

1

tPkctPkctPkctPk ++=

where:
Pk

1,2,3

(t) are the instant peak values of the frequency weighted acceleration in

each axis

c

1,2,3

are multiplying coefficients dependent on the specific application.

Pkmx Maximum peak value of the frequency weighted acceleration.

AeqS Time average (linear) of the frequency weighted acceleration calculated in the last

second (“running r.m.s.”):

()

2/1

1

2,32

3

2,22

2

2,12

1

)()()()(

⎟

⎟
⎠

⎞

⎜

⎜
⎝

⎛

++=

∫

−

t

st

wwweqS

dacacactA

ξξξξ

where:
a

1,2,3,w

(ξ) are the instant frequency weighted accelerations in each axis

c

1,2,3

are multiplying coefficients dependent on the specific application.

Aeq Time average (linear) of the frequency weighted acceleration, calculated in the

measurement time:

()

2/1

0

2,32

3

2,22

2

2,12

1

)()()(

1

⎟

⎟
⎠

⎞

⎜

⎜
⎝

⎛

++=

∫

T

wwweq

dacacac

T

A

ξξξξ

where:
a

1,2,3,w

(ξ) are the instant frequency weighted accelerations in each axis

c

1,2,3

are multiplying coefficients dependent on the specific application

T is the measurement time.

A1s Time average (exponential) of the frequency weighted acceleration with time

constant of 1 second:

()

2/1

2,32

3

2,22

2

2,12

11

exp)()()(

1

)(

⎟

⎟
⎠

⎞

⎜

⎜
⎝

⎛

⎟
⎠

⎞

⎜
⎝

⎛

−

++=

∫

∞−

t

wwws

d

t

acacactA

ξ

τ

ξ

ξξξ

τ

where:
a

1,2,3,w

(ξ) are the instant frequency weighted accelerations in each axis

c

1,2,3

are multiplying coefficients dependent on the specific application

τ = 1s is the time constant of the exponential equation.

A8s Time average (exponential) of the frequency weighted acceleration with a time

constant of 8 seconds.

- 72 -

A1smx Maximum value of the time average (exponential) of the frequency weighted

acceleration with time constant of 1 second.

A8smx Maximum value of the time average (exponential) of the frequency weighted

acceleration with time constant of 8 seconds.

A1smn Minimum value of the time average (exponential) of the frequency weighted

acceleration with time constant of 1 second.

A8smn Minimum value of the time average (exponential) of the frequency weighted

acceleration with time constant of 8 seconds.

A(1s) Equivalent value of the frequency weighted acceleration in the measurement time

referenced to 1 second:

()

2/1

0

2,32

3

2,22

2

2,12

1

0

)()()(

1

)1(

⎟

⎟
⎠

⎞

⎜

⎜
⎝

⎛

++=

∫

T

www

dacacac

T

sA

ξξξξ

where:
a

1,2,3,w

(ξ) are the instant frequency weighted accelerations in each axis

c

1,2,3

are multiplying coefficients dependent on the specific application

T is the measurement time.

A(8) Equivalent value of the frequency weighted acceleration in the measurement time

referenced to 8 hours:

()

2/1

0

2,32

3

2,22

2

2,12

1

8

)()()(

1

)8(

⎟

⎟
⎠

⎞

⎜

⎜
⎝

⎛

++=

∫

T

www

h

dacacac

T

A

ξξξξ

where:
a

1,2,3,w

(ξ) are the instant frequency weighted accelerations in each axis

c

1,2,3

are multiplying coefficients dependent on the specific application

T

8h

= 28800 is the number of seconds in 8 hours.

MTVV Maximum value of the time average (linear) of the frequency weighted accelera-

tion calculated in the last second.

CFeq Crest factor calculated as ratio between the maximum peak value and the time

average of the frequency weighted acceleration:

()

2/1

0

2,32

3

2,22

2

2,12

1

)()()(

1

⎟

⎟
⎠

⎞

⎜

⎜
⎝

⎛

++

=

∫

T

www

mx

eq

dacacac

T

Pk

CF

ξξξξ

where:
Pk

mx

is the maximum peak value of the frequency weighted acceleration vector

a

1,2,3,w

(ξ) are the instant frequency weighted accelerations in each axis

c

1,2,3

are multiplying coefficients dependent on the specific application

T is the measurement time.

CF Crest factor calculated as ratio between the instant peak value and the time

average of the frequency weighted acceleration in the last second:

()

2/1

1

2,32

3

2,22

2

2,12

1

)()()(

)(

)(

⎟

⎟
⎠

⎞

⎜

⎜
⎝

⎛

++

=

∫

−

t

st

www

dacacac

tPk

tCF

ξξξξ

where:
Pk is the instant peak value of the frequency weighted acceleration vector
a

1,2,3,w

(ξ) are the instant frequency weighted acceleration in each axis

c

1,2,3

are multiplying coefficients dependent on the specific application.

CFmx Maximum value of the Crest factor CF calculated as ratio between the instant peak

value and the time average of the frequency weighted acceleration in the last
second.

- 73 -

MTVVr Ratio between the maximum value calculated in the last second (MTVV) and the

time average (linear) of the frequency weighted acceleration calculated in the
measurement time:

()

2/1

0

2,32

3

2,22

2

2,12

1

)()()(

1

⎟

⎟
⎠

⎞

⎜

⎜
⎝

⎛

++

=

∫

T

www

r

dacacac

T

MTVV

MTVV

ξξξξ

where:
a

1,2,3,w

(ξ) are the instant frequency weighted accelerations in each axis

c

1,2,3

are multiplying coefficients dependent on the specific application

T is the measurement time.

VLM_3 Screen: Single axis global parameters.

Parameter Description

Pkmx Maximum peak value of the frequency weighted acceleration.

Aeq Time average (linear) of the frequency weighted acceleration calculated in the

measurement time:

2/1

0

2

)(

1

⎟

⎟
⎠

⎞

⎜

⎜
⎝

⎛

=

∫

T

weq

da

T

A

ξξ

where:
a

w

(ξ) is the single axis frequency weighted instant acceleration
T is the measurement time.

A1smx Maximum value of the time average (exponential) of the frequency weighted

acceleration with time constant of 1 second.

A8smx Maximum value of the time average (exponential) of the frequency weighted

acceleration with time constant of 8 seconds.

A1smn Minimum value of the time average (exponential) of the frequency weighted

acceleration with time constant of 1 second.

A8smn Minimum value of the time average (exponential) of the frequency weighted

acceleration with time constant of 8 seconds.

A(1s) Equivalent value of the frequency weighted acceleration in the measurement time

referenced to 1 second:

2/1

0

2

0

)(

1

)1(

⎟

⎟
⎠

⎞

⎜

⎜
⎝

⎛

=

∫

T

w

da

T

sA

ξξ

where:
a

w

(ξ) is the frequency weighted single axis instant acceleration
T is the measurement time.

A(8) Equivalent value of the frequency weighted acceleration in the measurement time

referenced to 8 hours.

2/1

0

2

8

)(

1

)8(

⎟

⎟
⎠

⎞

⎜

⎜
⎝

⎛

=

∫

T

w

h

da

T

A

ξξ

where:
a

w

(ξ) is the frequency weighted single axis instant acceleration
T

8h

= 28800 is the number of seconds in 8 hours.

VDV Vibrations Dose Value in the measurement time:

4/1

0

4

)(

⎟

⎟
⎠

⎞

⎜

⎜
⎝

⎛

=

∫

T

w

daVDV

ξξ

where:

- 74 -

a

w

(ξ) is the frequency weighted single axis instant acceleration.

VDV,d Daily evaluation (8 hours) of the vibrations dose:

4/1

0

4

8

)(,

⎟

⎟
⎠

⎞

⎜

⎜
⎝

⎛

=

∫

T

w

h

da

T

T

dVDV

ξξ

where:
a

w

(ξ) is the frequency weighted single axis instant acceleration
T is the measurement time.

T

8h

= 28800 is the number of seconds in 8 hours.

MTVV Maximum value of the time average (linear) of the frequency weighted accelera-

tion calculated in the last second.

CFeq Crest factor calculated as ratio between the maximum peak value and the time

average of the frequency weighted acceleration:

2/1

0

2

)(

1

⎟

⎟
⎠

⎞

⎜

⎜
⎝

⎛

=

∫

T

w

mx

eq

da

T

Pk

CF

ξξ

where:
a

w

(ξ) is the frequency weighted single axis instant acceleration
T is the measurement time.

CF Crest factor calculated as ratio between the instant peak value and the time

average of the frequency weighted acceleration in the last second:

2/1

1

2

)(

)(

)(

⎟

⎟
⎠

⎞

⎜

⎜
⎝

⎛

=

∫

−

t

st

w

da

tPk

tCF

ξξ

where:
a

w

(ξ) is the frequency weighted single axis instant acceleration.

CFmx Maximum value of the Crest factor CF calculated as ratio between the instant peak

value and the time average of the frequency weighted acceleration in the last
second.

VDVr Ratio between the vibrations dose value (VDV) and the time average (linear) of

the frequency weighted acceleration in the measurement time:

2/1

0

2

)(

1

⎟

⎟
⎠

⎞

⎜

⎜
⎝

⎛

=

∫

T

w

r

da

T

VDV

VDV

ξξ

where:
a

w

(ξ) is the frequency weighted single axis instant acceleration
T is the measurement time.

MTVVr Ratio between the maximum value calculated in the last second (MTVV) and the

time average (linear) of the frequency weighted acceleration calculated in the
measurement time:

2/1

0

2

)(

1

⎟

⎟
⎠

⎞

⎜

⎜
⎝

⎛

=

∫

T

w

r

da

T

MTVV

MTVV

ξξ

where:
a

w

(ξ) is the frequency weighted single axis instant acceleration
T is the measurement time.

OL Percentage of time with “overload”.

UR Percentage of time with “under-range”.

- 75 -

VLM_4 Screen: Acceleration vector global parameters.

Parameter Description

Pkmx Maximum value of the frequency weighted acceleration.

Aeq Time average (linear) of the frequency weighted acceleration calculated in the

measurement time:

()

2/1

0

2,32

3

2,22

2

2,12

1

)()()(

1

⎟

⎟
⎠

⎞

⎜

⎜
⎝

⎛

++=

∫

T

wwweq

dacacac

T

A

ξξξξ

where:
a

1,2,3,w

(ξ) are the instant frequency weighted accelerations in each axis

c

1,2,3

are multiplying coefficients dependent on the specific application

T is the measurement time.

A1smx Maximum value of the time average (exponential) of the frequency weighted

acceleration with time constant of 1 second.

A8smx Maximum value of the time average (exponential) of the frequency weighted

acceleration with time constant of 8 seconds.

A1smn Minimum value of the time average (exponential) of the frequency weighted

acceleration with time constant of 1 second.

A8smn Minimum value of the time average (exponential) of the frequency weighted

acceleration with time constant of 8 seconds.

A(1s) Equivalent value of the frequency weighted acceleration in the measurement time

referenced to 1 second:

()

2/1

0

2,32

3

2,22

2

2,12

1

0

)()()(

1

)1(

⎟

⎟
⎠

⎞

⎜

⎜
⎝

⎛

++=

∫

T

www

dacacac

T

sA

ξξξξ

where:
a

1,2,3,w

(ξ) are the instant frequency weighted accelerations in each axis

c

1,2,3

are multiplying coefficients dependent on the specific application

T is the measurement time.

A(8) Equivalent value of the frequency weighted acceleration in the measurement time

referenced to 8 hours:

()

2/1

0

2,32

3

2,22

2

2,12

1

8

)()()(

1

)8(

⎟

⎟
⎠

⎞

⎜

⎜
⎝

⎛

++=

∫

T

www

h

dacacac

T

A

ξξξξ

where:
a

1,2,3,w

(ξ) are the instant frequency weighted accelerations in each axis

c

1,2,3

are multiplying coefficients

T

8h

= 28800 is the number of seconds in 8 hours.

MTVV Maximum value of the time average (linear) of the frequency weighted accelera-

tion calculated in the last second.

CFeq Crest factor calculated as ratio between the maximum peak value and the time

average of the frequency weighted acceleration:

()

2/1

0

2,32

3

2,22

2

2,12

1

)()()(

1

⎟

⎟
⎠

⎞

⎜

⎜
⎝

⎛

++

=

∫

T

www

mx

eq

dacacac

T

Pk

CF

ξξξξ

where:
Pk

mx

is the maximum peak value of the frequency weighted acceleration vector

a

1,2,3,w

(ξ) are the instant frequency weighted accelerations in each axis

c

1,2,3

are multiplying coefficients dependent on the specific application

T is the measurement time.

- 76 -

CFmx Maximum value of the Crest factor CF calculated as ratio between the instant peak

value and the time average of the frequency weighted acceleration in the last
second.

MTVVr Ratio between the maximum value calculated in the last second (MTVV) and the

time average (linear) of the frequency weighted acceleration calculated in the
measurement time:

()

2/1

0

2,32

3

2,22

2

2,12

1

)()()(

1

⎟

⎟
⎠

⎞

⎜

⎜
⎝

⎛

++

=

∫

T

www

r

dacacac

T

MTVV

MTVV

ξξξξ

where:
a

1,2,3,w

(ξ) are the instant frequency weighted accelerations in each axis

c

1,2,3

are multiplying coefficients dependent on the specific application

T is the measurement time.

PROFILE Screen page (only single axis parameters):

Parameter Description

Pkmx Maximum peak value of the frequency weighted acceleration.

Aeq Time average (linear) of the frequency weighted acceleration calculated in the

measurement time:

2/1

0

2

)(

1

⎟

⎟
⎠

⎞

⎜

⎜
⎝

⎛

=

∫

T

weq

da

T

A

ξξ

where:
a

w

(ξ) is the single axis frequency weighted instant acceleration
T is the measurement time.

A1smx Maximum value of the time average (exponential) of the frequency weighted

acceleration with time constant of 1 second.

A8smx Maximum value of the time average (exponential) of the frequency weighted

acceleration with time constant of 8 seconds.

A1smn Minimum value of the time average (exponential) of the frequency weighted

acceleration with time constant of 1 second.

A8smn Minimum value of the time average (exponential) of the frequency weighted

acceleration with time constant of 8 seconds.

The parameter selected in the PROFILE mode is used for the statistical analysis.

The attribute of the parameters that can be displayed in the VLM and PROFILE modes

indicates the related frequency weighting.

APPLICATION FREQUENCY WEIGHS

Hand-Arm (HA) Fz, Fc, Wh

Whole Body (WB) Fz, Fa, Wb, Wc, Wd, We, Wj, Wk

Building Vibrations (BV) Fz, Fm, Wm

Fz: Flat weighting on the entire frequency range
Fa: Band limitation filter for whole body measurements: 0.4Hz … 100Hz
Fc: Band limitation filter for Hand-Arm system measurements: 6.3Hz … 1250Hz
Fm: Band limitation filter for vibrations transmitted by buildings measurements: 0.8Hz …

100Hz

Wb: filter for the measurement of the whole body vertical acceleration (z axis) for standing,

sitting or supine people (ISO 2631-4)

- 77 -

Wc: filter for the measurement of the whole body horizontal acceleration (x axis) transmitted

from back to sitting people (ISO 2631-1)

Wd: filter for the measurement of the whole body horizontal acceleration (x or y axis), for

standing, sitting or supine people (ISO 2631-1)

We: filter for the measurement of the whole body angular acceleration (all directions) for sit-

ting people (ISO 2631-1)

Wh: filter for the measurement of the acceleration transmitted to the hand-arm system (all

directions) (ISO 5349-1)

Wj: filter for the measurement of the head vertical acceleration (x axis) for supine people

(ISO 2631-1)

Wk: filter for the measurement of the whole body vertical acceleration (z axis) for standing,

sitting or supine people (ISO 2631-1)

Wm: filter for the measurement of the buildings transmitted acceleration (all directions) (ISO

2631-2)

Weighting graphs are shown in appendix on page 128

The acceleration values can be displayed also as acceleration level in decibel using the rela­tion:

0

log20

a

a

L

w

w

=

where:
a

w

is the frequency weighted acceleration
a

0

is the reference acceleration equal to 10-6 m/s2 (ISO 1683).

The measurement parameters can be displayed with different units.

MEASURE PARAMETER

MEASURE UNIT

SYMBOL DESCRIPTION

Pk Instant peak

m/s

2

, cm/s2, ft/s2, in/s2,

g, dB

Pkmx Maximum peak value in the measurement time

AeqS Average acceleration value calculated every

second with linear integration

Aeq Average acceleration value linearly integrated in

the measurement time

A1s Average acceleration value calculated every

second with a time constant equal to 1 second

A8s Average acceleration value calculated every

second with a time constant equal to 8 seconds

A1smx Maximum value of the average acceleration

calculated every second with 1s time constant

8smx Maximum value of the average acceleration

calculated every second with 8s time constant

A1smn Minimum value of the average acceleration

calculated every second with 1s time constant

A8smn Minimum value of the average acceleration

calculated every second with 8s time constant

A(1s) Value referenced to 1 second of the acceleration

linearly integrated in the measurement time

A(8) Value referenced to 8 hours of the acceleration

linearly integrated in the measurement time

MTVV Maximum value of the average acceleration

linearly integrated every second

VDV Vibrations dose value linearly integrated in the

measurement time

m/s

1.75

VDV,d Value referenced to 8 hours of the vibrations

dose linearly integrated in the measurement time

- 78 -

MEASURE PARAMETER

MEASURE UNIT

SYMBOL DESCRIPTION

CFeq Crest factor calculated as ratio between the max-

imum peak and the average of the acceleration.
It is calculated in the measurement time

without dimension

CF Instant crest factor calculated as ratio between

peak and average value of the acceleration in 1
second

CFmx Maximum instant crest factor value calculated as

ratio between peak and average value of the ac­celeration in 1 second. It is calculated in the
measurement time

VDVr Ratio between vibrations dose and the average

value of the acceleration linearly integrated in the
measurement time

MTVVr Ratio between the maximum value of average

acceleration integrated every second and the
average acceleration integrated in the
measurement time. The acceleration integration
is linear.

OL Overload time percentage during measurement %
UR Under-range time percentage during measure-

ment

- 79 -

DIRECT PRINTER CONNECTION

The HD2070 analyzer can print the
visualized levels in a format compatible with
that of a portable printer with 24 columns like
the HD40.1 printer.

The printer has to be connected to the
serial port of the instrument.

Printer and vibrations analyzer must
be properly configured.

HD2070 configuration

1. Set the parameter MENU >> Parameters

>> Instrument >> Input/Output >> RS232
Baud Rate: 38.4k.

2. Set the parameter MENU >> Parameters

>> Instrument >> Input/Output >> Serial
Dev.: RS232.

Printer configuration

1. The communication speed of the printer (Baud Rate) must be equal to the one set in the

analyzer (38400 baud).
This is the only parameter requested for the HD40.1 printer.

The other connection parameters for printers different from the HD40.1 are:

2. Data bits: 8.

3. Parity: none.

4. Stop bit: 1.

5. Flow control (Handshaking): Hardware.

6. Automatic paper advance (Autofeed): enable.

Connect the HD2070 to the printer using the HD2110CSNM cable.

To proceed with the data printing:

• Switch on the instrument.

• Enter the MENU >> Parameters >> Instrument >> Input/Output and set the item:

o Printout =

 VLM for printing the numerical parameters visualized in the VLM screen,
 SPC for printing the octave or third-octave bands levels,
 VLM+SPC for printing both.

• Start the measurement: when the instrument enter the stop mode, the data are auto-

matically printed.

• To disable the printing, set the menu item Printout = OFF.

- 80 -

CONNECTION TO A PC WITH USB INTERFACE

The HD2070 can be connected to the USB port of a PC using the CP22 cable.

The connection through the USB port requires the installation of a driver supplied with
the Noise Studio Software.

Before connecting the instrument to the USB port of the PC, install the Noise
Studio software.
With Windows 7 operating systems you need to start your PC by disabling driver sig-
nature, as explained in the USB drivers installation guide contained in the installation
CDROM of Noise Studio software

Proceed as follows:

1. Set the instrument menu item “MENU >> Parameters >> Instrument >> In-

put/Output >> Serial Device” to “USB”. Confirm and exit from the menu” .

2. Do not connect the instrument to USB port until requested from the wizard

3. Insert Noise Studio installation CDRom and wait for AutoPlay window to appear. In

Windows Vista and Windows 7 operating systems it’s shown the window below; select

“autorun.exe execution” (see “note 1” in the next paragraph)

4. The starting screen of Noise Studio will be opened: if the operating system prevents

software to start, please see “note 1” in the next paragraph.

5. From starting window of Noise Studio click on “USB drive installation” to start the driver

installation procedure.

6. The program checks the Windows

®

operating system version and copies related drivers in

a temporary folder.

7. At the end a message appears asking to plug the vibration meter connection cable to PC

USB port: press OK and close Noise Studio software pressing EXIT key.

8. Connect the vibration meter to USB port and turn it ON: when Windows recognise

the instrument, it appears a message “ a new device has been detected”.

9. Wait some seconds until the message “new hardware is installed and ready to work” ap-

pears.

10. Driver installation procedure is ended: whenever the instrument will be connected it will

be automatically recognized.

- 81 -

Installation Notes
Note 1: for Windows Vista and Windows 7 operating systems..

1. For software installation is requested Administrator permission

2. If the operating system prevents the software to open, boot the PC as administrator user

, insert installation CDRom and, when the following window appears, select “open folder to
view files”

3. In the following screen, click with right mouse key on file “Autorun” and select “Execute as

administrator”:

4. Continue from point 5 of previous paragraph.

Note 2: if the vibration meter has been connected to USB port before USB driver installa-
tion, in Windows 2000 and XP operating systems it appears the window “new hardware

installation”. In Windows Vista and Windows 7 it appears an installation error under “device
manager”: in both cases, cancel operation, disconnect instrument and restart the complete
procedure starting from the beginning of this guide.

Verification of proper driver installation
To verify the proper installation procedure, proceed as follows.

On Windows 2000 and XP operating systems:

Select “START >> Settings >> Control Panel”, double click on SYSTEM icon. Select

“Hardware >> Device Manager”

On Windows Vista and Windows 7 operating systems:

Select “START >> Control panel”, then click on “Device Manager” icon.

Connect instrument to USB port.

The following items should appear:

• “Port (COM and LPT) >> USB Serial Port (COM#)”. The value # is the number as-

signed to virtual serial port

• “Controller USB (Universal serial bus) >> USB serial converter”

- 82 -

When USB cable is unplugged, the above items will disappear and they will appear again as
soon as the instrument is plugged to USB port.

In the documentation supplied with the Noise Studio CDRom, it’s available a detailed version,
including pictures, of the USB driver management guide. Procedure to remove USB driver is
also reported.

- 83 -

CONNECTORS DESCRIPTION

Front panel connectors

The following figure indicates the connectors in the HD2070 front panel.

Right connector

Identified with R letter, it is a male connector with 4 poles LEMO-B type for the connection of a
triaxial or monoaxial accelerometer with integrated electronics (IEPE type or compatible). The
pin numbering is seen from outside.

PIN DESCRIPTION
1 Ground

2 Accelerometer channel #3
3 Accelerometer channel #2

4 Accelerometer channel #1

LINE connector

Identified with AC_OUT indication, it is a 6 poles connector LEMO-B type for the analog out­puts (LINE) of the 4 accelerometric channels.
The pin numbering is seen from outside

PIN DESCRIPTION
1 Ground

2 Line Output #1
3 Line Output #2

4 Line Output #3
5
6 Audio output

Trigger Connector

Male connector with 4 poles LEMO-00 type for the trigger function, it is identified with TRG in-
dication. The trigger input is differential type.
The pin numbering is seen from outside.

PIN DESCRIPTION
1 Negative input of trigger

2 Trigger output
3 Ground
4 Positive input of trigger

- 84 -

Headphones jack

Jack (Ø3.5mm) type output for the connection of the headphones.

Microphone jack

Jack (Ø3.5mm) type input pin for the microphone.

Bottom panel connectors

Following is the description of the connectors present in the bottom panel of the HD2070.

Power supply connector

Male connector for external power supply (∅ 5.5mm-2.1mm pin).

It requires a 9…12Vdc/300mA power supply.
The positive of the power supply is supplied to central pin.

MiniDin 8 poles connector
MiniDin 8 poles connector for RS232C serial port. For the connection use the null-modem ded-

icated serial cable (HD2110CSNM code), provided with a subD 9 poles connector.
Note: inserting the connector, be sure that the arrow printed its on surface is upwards.
The connector description is indicated in the “serial interface” chapter.

Ground Audio Signal

Audio Signal

Ground

Audio Signal

NC

- 85 -

USB Connector
USB connector type B for the connection of the vibration analyzer to the USB port of a PC with

CP22 code cable.
The pin numbering is seen from outside.

PIN DESCRIPTION
1 +5Vdc

2 Data ­3 Data +
4 Ground

- 86 -

TECHNICAL SPECIFICATIONS

The HD2070 vibrations analyzer is able to detect the accelerations in three axis.

The sensors that can be connected are IEPE type with amplifying integrated electronics,
triaxial or monoaxial type.

The input supports triaxial or up to three monoaxial type accelerometers. The instrument
analyzes the signal provided by the accelerometers and elaborates the three axes data at the
same time. The instrument performs optionally octave or third-octave bands spectrum analysis
(option HD2070.O1) and statistical analysis (option HD2070.O2).

The HD2070 vibrations analyzer complies with the following Standards:

ISO 8041:2005 “Human response to vibration – Measuring instrumentation”
ISO 5349-1:2001 “ Mechanical vibration – Measurement and evaluation of human expo-

sure to hand-transmitted vibration – General requirements”

ISO 5349-2:2001 “ Mechanical vibration – Measurement and evaluation of human expo-

sure to hand-transmitted vibration – Practical guidance for measurement at the

workplace”

ISO 2631-1:1997 “Mechanical vibration and shock – Evaluation of human exposure to

whole body vibration – General requirements”

ISO 2631-2:1989 “Evaluation of human exposure to whole body vibration – Continuous

and shock-induced vibrations in buildings (1 to 80 Hz)”

ISO 2631-4:2001 “Evaluation of human exposure to whole body vibration – Guidelines

for the evaluation of the effects of vibration and rotational motion on passenger and crew

comfort in fixed-guideway transport systems”

ISO 2631-5:2004 “Evaluation of human exposure to whole body vibration – Method for

evaluation of vibration containing multiple shocks”

IEC 61260:1995 “Electroacoustics – Octave band and fractional-octave band filters”
ISO 6954:2000 “Mechanical vibration - Guidelines for the measurement, reporting and

evaluation of vibration with regard to habitability on passenger and merchant ships”.

Accelerometers models
It is possible to connect triaxial or monoaxial accelerometers with integrated electronics

(IEPE type or equivalent). The accelerometers are current supplied with a polarization

voltage of 25V and a maximum current of 2mA. With the HD2070 analyzer can be sup-

plied the following accelerometers:

Accessories

The following accessories are supplied on request:

HD6188: tube of hydro-repellent silicone grease and electrically insulating.
HD6273: tray with bonding wax.
080A90: glue for quick fastening.
081B05: double threaded screw 10-32 UNF.
081A90: double threaded screw 5-40 UNC and 10-32 UNF.
M081B05: double threaded screw 10-32 UNF and M6 X 0.75.
M081A27: double threaded screw 10-32 UNF and M3 X 0.5”.
081A27: double threaded screw 5-40 UNC.
HD6239: accelerometer push-rod.
HD6286: adhesive metallic plate for assembly through magnet. Used to magnetically

couple the accelerometer on non-metal surfaces.

HD6284: insulated magnetic base with 10-32 UNF threaded hole.
HD6196: magnetic base with integrated 10-32 UNF screw.
HD6226: adhesive mounting base with threaded through hole (10-32 UNF).
HD6245: adhesive mounting insulated base with integrated screw 10-32 UNF.
HD6220: insulated base with integrated mounting 10-32 UNF screw and threaded hole

10-32 UNF for accelerometer mounting.

- 87 -

METROLOGICAL SPECIFICATIONS

The HD2070 vibrations analyzer can perform measurement on the hand-arm system, the
whole body or vibrations transmitted by the buildings. The weighting filters and the frequency
range of the filters with constant percentage octave or third-octave band depend on the cho­sen analysis mode.

Frequency Weighting for RMS measurements:

 Fz, Fc e Wh for the measurement on the hand-arm system
 Fz, Fa, Wb, Wc, Wd, We, Wj, Wk for the whole body measurements
 Fz, Fm e Wm for the measurements of whole body transmitted by the buildings vibra-

tions .

The Fz weighting is flat on all the frequency range with the following features:

Fz

High-pass OFF

Attenuation

[dB]

Frequency range

[Hz]

< 0.1 1.25 ÷ 1600

< 1 0.4 ÷ 3200
< 3 0.2 ÷ 3700

Activating the High Pass filter (Menu >>Parameters >> Instrument >> Measurement >>
High-Pass filter) the Fz ponderation have the following features:

Fz

High-pass ON

Attenuation

[dB]

Frequency range

[Hz]

< 0.1 4 ÷ 1600

< 1 1.25 ÷ 3200
< 3 0.7 ÷ 3700

The Fa, Fm and Fc weightings are band-pass filters with the following features (High-Pass
OFF):

Filter Band Limits (to -3dB)

[Hz]

Fa 0.4 ÷ 100

Fm 0.8 ÷ 100

Fc 6.3 ÷ 1250

The Wb, Wc, Wd, We, Wj, Wk and Wm filters respect ISO 8041:2005 standard.

Octave or third-octave bands spectral Analysis

The constant percentage band filters, available with HD2070.O1 option, comply with the

rule IEC 61260. The range of the central frequencies depends on the selected application

as reported in the following table.

- 88 -

Application

Central frequencies range

Octave bands Third-octa ve ban ds

[Hz]

Hand-Arm 4 ÷ 2000 3.15 ÷ 3150

Whole body 0.5 ÷ 250 0.315 ÷ 315

Building vibration 0.5 ÷ 250 0.315 ÷ 315

Self generated noise

The intrinsic noise, for the different frequency ponderations and for constant percentage

bands, both in octave and third-octave, is measured short-circuiting the input channels.

For the Hand-Arm measurements, the detected values are indicated in the following

tables:

HAND ARM

Weightings Fz Fc Wh

[uV] 17 10 7

Center frequency
octave bands

[Hz]

4

8

16 32 63 125 250 500 1000 2000

[uV] 4 4 3 3 4 4 4 5 6 7

Center frequency
third-octave bands

[Hz]

3.2 4

5 6.3

8

10 12.5 16 20 25

[uV] 2 2 2 2 2 2 2 2 2 2

Center frequency
third-octave bands

[Hz]

32 40 50 63 80 100 125 160 200 250 315

[uV] 2 2 2 2 2 2 2 2 2 3 3

Center frequency
third-octave bands

[Hz]

400 500 630 800 1k 1.3k 1.6k 2k 2.5k 3.2k

[uV] 3 3 3 3 3 4 4 5 5 5

- 89 -

For Whole-Body measurements, the detected values are indicated in the following tables:

WHOLE BODY

Weightings Fz Fa Wb Wc Wd We Wj Wk

[uV] 21 14 8 13 13 11 10 9

Central Frequency
octave bands

[Hz]

0.5 1

2

4

8

16 32 63 125 250

Self generated Noise

[uV]

8 6 5 3 5 2 2 3 3 3

Central Frequency
third-octave bands

[Hz]

0.32 0.4 0.5 0.63 0.8

1 1.25 1.6

2

2.5

Self generated Noise

[uV]

5 5 4 4 4 4 3 3 3 2

Central Frequency
third-octave bands

[Hz]

3.2 4

5 6.3

8

10 12.5 16 20 25

Self generated Noise

[uV]

2 2 2 2 2 2 1 1 1 1

Central Frequency
third-octave bands

[Hz]

32 40 50 63 80 100 125 160 200 250 315

Self generated Noise

[uV]

1 1 1 2 2 2 2 2 2 2 2

For building vibrations measurements, the values are indicated in the following tables:

BUILDING VIBRATIONS

Weightings Fz Fm Wm

[uV] 21 13 10

For the Buildings Vibration measurements, the detected values of the octave and third­octave bands noise is the same detected for the Whole Body measurements.

Linearity range
The linearity range is independent from the frequency and it is equal to 80dB. The max-

imum measurable level depends on the gain of the input amplifier as indicated in the following
table:

Gain
[dB]

Lower Limit

[mVrms]

Upper Limit

[Vrms]

0 0.7 7
10 0.22 2.24
20 0.07 0.7

As an example, following are indicated the linear ranges for two different sensitivity of

the accelerometer.

Gain

[dB]

Linear range with accelerometer

Sensitivity

10mV/g ∼ 1mV/m/s

2

Sensitivity

1V/g ∼ 100mV/m/s

2

0 0.7 ÷ 7000 m/s

2

117 ÷ 197 dB 0.7 cm/s2 ÷ 70 m/s

2

77 ÷ 157 dB

10 0.22 ÷ 2240 m/s

2

107 ÷ 187 dB 0.22 cm/s2 ÷ 22.4 m/s

2

67 ÷ 147 dB

20 0.07 ÷ 700 m/s

2

97 ÷ 177 dB 0.07 cm/s2 ÷ 7 m/s

2

57 ÷ 137 dB

- 90 -

Integration Time

The integration time can be set from a minimum of 1s to a maximum of 99 hours.

Crosstalk

The crosstalk between channels is <100dB@1kHz.

Reference conditions

• The measure range is the one with input gain equal to 10dB.

• The level is equal to 10mV corresponding to 140dB or 10m/s

2

for an accelerometer with

a sensitivity equal to 10mV/g.

Operating conditions

• Storage temperature: -25 ÷ 70°C.

• Working temperature: -10 ÷ 50°C.

• Protection Degree: IP64.

Drift

• Temperature: ± 0.3dB over the range -10 ÷ 50°C.

ELECTRICAL FEATURES

Pre-heating time

Less than 1 minute.

Power supply

• Internal batteries: 4 x 1.5 V alkaline or NiMH rechargeable batteries type AA. The in-

strument does not charge the batteries.

• Autonomy: > 10 hours in acquisition (RUN) mode with good quality alkaline batteries.

• External batteries: it is possible to connect an external battery pack to the instrument

through the male connector for external power supply (∅ 5.5mm-2.1mm pin). The posi­tive pole has to be connected to the central pin. The battery has to supply 9÷12V with
at least 300mA/h. The maximum limit for external supply is 15V.

• Mains: mains adaptor with 9÷12Vdc/300mA direct voltage.

• Switching off: automatic, it can be disabled.

When the batteries voltage is less than 3.8V, the instrument is not able to measure.
However, it is still possible to view and download the memorized data.
Under 3.5V the instrument switches itself off automatically. The memorized data, the confi­guration and the calibration parameters are kept also without power supply.

Maximum input levels

The input signal must be in the range 0V÷25V.

LINE outputs

• Multi-pole circular connector (LEMO)

• Pre-amplified signal not pondered with an gain equal to 0.1V/V.

• Linearity: 110dB with maximum output level equal to 1.5Vrms.

• Series impedance: 1kΩ

• Typical load: 100kΩ

TRGOUT output

• Jack stereo socket ∅ 3.5mm

• Digital output 0 ÷ 3.3V short-circuit protected

• Pull-up impedance : 1kΩ

• Pull-down impedance: 30Ω

- 91 -

TRGIN input

• Jack stereo socket ∅ 3.5mm

• Current input: threshold 0.5mA max 20mA

• Voltage input: threshold 2V max 10V

• Series impedance: 470 Ω

RS232 Serial Interface:

• Socket: MiniDin 8 poles.

• Type: RS232C (EIA/TIA574) not isolated

• Baud rate: from 300 to 115200baud

• Data bit: 8

• Parity: None

• Stop Bit: 1

• Flow Control: Hardware

• Cable length: max 15m

USB Serial Interface:

• Socket: USB-B

• Type: USB 1.1 o 2.0 with 500mA

STATISTICAL ANALYSIS

Statistical analysis, available with HD2070.O2 option, is calculated on the chosen profile
screen descriptor (Menu >> Parameters >> Vibration Analyzer >> Profile). Analysis is
made with:

• 1s sampling.

• 1dB classes.

Calculation and display of the statistical graphs.

Graph of the levels probability distribution.
Graph of the percentile levels from L

1

to L

99.

SPECTRAL ANALYSIS

Spectral analysis of acceleration signals, available with HD2070.O1 option, is calculated
in parallel with other calculations on all the 3 channels

• Sampling: 8 kHz

• Resolution: 25bit

Average spectrum or Multi-spectrum with 1 second sampling period.

Octave bands from 4 Hz to 2kHz for hand-arm measurements and from 0.5Hz to 250Hz for

whole body or buildings measurements.
Third-octave bands from 3.2Hz to 3.2kHz or from 0.32Hz to 315Hz
Ratio of the center frequencies: base 2

- 92 -

VISUALIZATION

Graphic Display

128x64 pixel with 56x38mm wide backlit.

Mode:

 VLM_1 and VLM_3 (vibration level meter) screens, each one with 3 parameters at choice

for acceleration measurements related to the single channel.

 VLM_2 and VLM_4 (vibration level meter) screens, each one with 3 parameters at choice

for acceleration measurements related to the vector formed by 1,2 and 3 channels.

 time profile of a parameter at choice with sampling time from 1s to 1 hour.
 Octave or third-octave spectrum. (option HD2070.O1)
 probability distribution of levels in 1dB classes. (option HD2070.O2)
 Graph of the percentile levels from L

1

to L99. (option HD2070.O2)

MEASUREMENTS RECORDING

8MB permanent internal memory FLASH type
Card slot for SD memory type up to 2GByte

Safety of memorized data

Independent from the condition of the batteries charge.

OTHER FEATURES

Print

It is possible to activate the automatic printing of the acquired parameters at the end of the
measurement. The printer must be connected to the RS232 interface.

Vocal comments

It’s possible to add a vocal comment to every measurement stored on the flash internal
memory or on the memory card. Stored vocal comments can be listened using the “Naviga­tor” program. For recording and listening vocal comments it’s necessary to connect a
microphone and headphones on the dedicated connector placed on the frontal panel.

Digital recorder

On the SD memory card, it’s possible to record raw digital samples coming from accele­rometer’s signals, in parallel with the standard recording functions. Signals digitization has
the following properties:

• Sampling frequency: 8 ksmp/s

• Resolution: 0.05%

• Dynamic: 100dB

By setting the parameter Menu >> Parameters >> Data Logger >> Profiles >> ADC Channels
the Digital recorder function can be activated. The user can activate one single channel chosen
from the three available, only the first three or all simultaneously.

Slot

• Dimensions (Length x Width x Height): 245x100x50mm,

• Weight: 740g (complete with batteries)

• Materials: ABS, rubber

Time:

 Date and time: clock and calendar updated in real time
 Maximum deviation: 1min/month

- 93 -

ACCELEROMETERS TECHNICAL FEATURES

The HD2070 analyzer can be supplied with the following monoaxial accelerometers:

HDD3200B5T Model

Type: Dytran production accelerometer with integrated electron-

ics (LIVM

TM

). This sensor is usually used for hand–arm
measurements when extremely high vibration levels at
high frequency need to be measured or for shock mea­surements.

Sensitivity: 1mV/g
Measure range: ±50000 m/s

2

Frequency response: 0.5Hz ÷ 40kHz
Resonance frequency: 130kHz
Linearity: 1% F.S.
Transverse sensitivity: 3% max
Maximum Shock: 50000gpk
Working Temperature: -50°C ÷ 120°C
Polarization Voltage: 8.5Vdc
Mechanical features:

• Weight: 6gr

• Dimensions: (hex-diameter x height) 12.7mm x 23.1mm

• Mounting: integrated screw 10-32 UNF-2A

• Connector: upper micro coaxial 10-32

• Material: stainless steel

• Isolation: >10Mohm between the enclosure and the ground terminal

Cable (not included): HD2030.CAB13 + HD2030CAB1B to connect to the ana-

lyzer’s triaxial input and HD2030.CAB1-xM (3m, 5m e
10m) to connect the monoaxial input

HDD3019A1 model

Type: Dytran production accelerometer witn integrated elec-

tronics (LIVM

TM

). This sensor is normally used for hand-

arm measurements.

Sensitivity: 10 mV/g
Measure range: ±5000 m/s

2

Frequency response (±5%): 1 Hz ÷ 10 kHz
Resonance frequency: 50 kHz
Linearity: 2% F.S.
Transverse sensitivity: 5% max
Maximum Shock: 3000 gpk
Working Temperature: -50 °C ÷ 150 °C
Polarization Voltage: 10 Vdc
Mechanical features:

• Weight: 8 gr

• Dimensions: (hex-diameter x height) 9.6 mm x 18.6 mm

• Mounting: integrated screw 10-32 UNF

• Connector: upper micro coaxial 10-32

• Material: stainless steel

• Isolation: enclosure connected to ground terminal

Cable (not included): HD2030.CAB13 + HD2030CAB1B to connect to the ana-

lyzer’s triaxial input and HD2030.CAB1-xM (3m, 5m e
10m) to connect the monoaxial input.

- 94 -

HDP352C34 Model

Type: PCB Piezotronics production accelerometer with inte-

grated electronics (ICP

TM

). This sensor is normally used

for whole body measurements.

Sensitivity: 100 mV/g
Measure range: ±500 m/s

2

Frequency response (±5%): 0.5 Hz ÷ 10 kHz
Resonance frequency: 50 kHz
Linearity: 1% F.S.
Transverse sensitivity: 5% max
Maximum Shock: 5000 gpk
Working Temperature: -54 °C ÷ 93 °C
Polarization Voltage: 10 Vdc
Mechanical features:

• Weight: 5.8 gr

• Dimensions: (hex-diameter x height) 11.2 mm x 22.4 mm

• Mounting: threaded hole 10-32 UNF

• Connector: upper micro coaxial 10-32

• Material: titanium

• Isolation: >10Mohm between the enclosure and the ground ter-

minal

Included accessories:

• Screw: double thread 10-32 UNF copper-beryllium alloy

(081B05)

• Screw: double thread 10-32 UNF and M6 copper-beryllium alloy

(M081B05)

Cable (not included): HD2030.CAB13 + HD2030CAB1B to connect to the ana-

lyzer’s triaxial input and HD2030.CAB1-xM (3m, 5m e
10m) to connect the monoaxial input.

HDD3056B2 Model

Type: Dytran production accelerometer with integrated elec-

tronics (LIVM

TM

). This sensor is normally used for whole

body measurements.

Sensitivity: 100 mV/g
Measure range: ±500 m/s

2

Frequency response (±5%): 1 Hz ÷ 10 kHz
Resonance frequency: 32 kHz
Linearity: 2% F.S.
Transverse sensitivity: 5% max
Maximum Shock: 2000 gpk
Working Temperature: -51 °C ÷ 120 °C
Polarization Voltage: 11 Vdc
Mechanical features:

• Weight: 10 gr

• Dimensions: (hex-diameter x height) 12.7 mm x 23.2 mm

• Mounting: threaded hole 10-32 UNF

• Connector: upper micro coaxial 10-32

• Material: titanium

• Isolation: >10Mohm between the enclosure and the ground ter-

minal

Included accessories:

• Screw: double thread 10-32 UNF copper-beryllium alloy

(081B05)

Cable (not included): HD2030.CAB13 + HD2030CAB1B to connect to the ana-

lyzer’s triaxial input and HD2030.CAB1-xM (3m, 5m e
10m) to connect the monoaxial input.

- 95 -

The HD2070 analyzer can be supplied with the following triaxial accelerometers:

HDP356B20 type

Type: PCB Piezotronics production triaxial accelerometer with

integrated electronics (ICP

TM

). This sensor is normally

used for hand-arm measurements.

Sensitivity: 1 mV/g
Measure range: ±50000 m/s

2

Frequency response (±5%): 2 Hz ÷ 10 kHz (Y and Z axes) , 2 Hz ÷ 7 kHz (X axis)
Resonance frequency: 55 kHz
Linearity: 2.5% F.S.
Transverse sensitivity: 5% max
Maximum Shock: 7000 gpk
Working Temperature: -55 °C ÷ 121 °C
Polarization Voltage: 9 Vdc
Mechanical features:

• Weight: 4 gr

• Dimensions: (height x width x depth) 10.2 mm x 10.2 mm x 10.2

mm

• Mounting: 2 threaded holes 5-40 UNC aligned with Y and Z axes

• Connector: side 8-36 4 pin

• Material: titanium

• Isolation: connector coupled with the ground terminal

Included accessories:

• Screw: thread 5-40 UNC stainless steel to fix, using hexagonal

wrench, to handle mounting adapters HD2030AC1-2-4

• Screw: double thread 5-40 UNC and 10-32 UNF in copper-

beryllium alloy (081A27)

• Screw: double thread 5-40 UNC and 10-32 UNF in copper-

beryllium alloy (081A90)

• Screw: double thread 5-40 UNC and M3 in copper-beryllium al-

loy (M081A27)

Cable (not included): HD2030.CAB3S-xM (3m, 5m e 10m) to connect accele-

rometer to analyzer.

HDD3023A2 Model

Type: Triaxial miniature accelerometer with integrated

electronics (LIVM

TM

). This sensor is usually used for hand-

arm measurement.

Sensitivity: 10mV/g
Measure range: ±5000 m/s

2

Frequency response: 1.5Hz ÷ 10kHz (-5% / +15%)
Resonance frequency: 40kHz
Linearity: 1% F.S.
Transverse sensitivity: 5% max
Maximum Shock: 5000g
Working Temperature: -50°C ÷ 120°C
Thermal Drift: 0.06%/°C
Polarization Voltage: 10Vdc
Mechanical features:

• Weight: 4gr

• Dims. (mm): (height x width x depth) 12.5x9.15x9.15

• Mounting: hole at the base for screw 10-32 UNF-2A (supplied)

• Connector: side ¼-28 4 pin

• Material: titanium steel

• Isolation: enclosure connected to the ground terminal

- 96 -

Included accessories:

• Screw: double thread 10-32 UNF in copper-beryllium alloy

(HD6200)

Cable (not included): HD2030.CAB3S-xM (3m, 5m e 10m) to connect accele-

rometer to analyzer.

HDP356A02 type

Type: PCB Piezotronics production triaxial accelerometer with

integrated electronics (ICP

TM

). This sensor is normally

used for hand-arm measurements.

Sensitivity: 10 mV/g
Measure range: ±5000 m/s

2

Frequency response (±5%): 1 Hz ÷ 5 kHz
Resonance frequency: 25 kHz
Linearity: 2% F.S.
Transverse sensitivity: 5% max
Maximum Shock: 7000 gpk
Working Temperature: -54 °C ÷ 121 °C
Polarization Voltage: 10 Vdc
Mechanical features:

• Weight: 10.5 gr

• Dimensions: (height x width x depth) 14 mm x 20.3 mm x 14 mm

• Mounting: threaded hole 10-32 UNF aligned with Z axis

• Connector: side ¼-28 4 pin

• Material: titanium

• Isolation: connector coupled with the ground terminal

Included accessories:

• Screw: double thread 10-32 UNF in copper-beryllium alloy

(081B05)

• Screw: double thread 10-32 UNF and M6 in copper-beryllium al-

loy (M081B05)

Cable (not included): HD2030.CAB3S-xM (3m, 5m e 10m) to connect accele-

rometer to analyzer.

HDP356B21 type

Type: PCB Piezotronics production miniature triaxial accelero-

meter with integrated electronics (ICP

TM

). This sensor is

normally used for hand-arm measurements.

Sensitivity: 10 mV/g
Measure range: ±5000 m/s

2

Frequency response (±5%): 2 Hz ÷ 10 kHz for Y and Z axes, 2 Hz ÷ 7 kHz for X axis
Resonance frequency: 55 kHz
Linearity: 1% F.S.
Transverse sensitivity: 5% max
Maximum Shock: 10000 gpk
Working Temperature: -54 °C ÷ 121 °C
Polarization Voltage: 9 Vdc
Mechanical features:

• Weight: 4 gr

• Dimensions: (height x width x depth) 10.2 mm x 10.2 mm x 10.2 mm

• Mounting: two threaded holes 5-40 UNC aligned with Y and Z axes

• Connector: side 8-36 4 pin

• Material: titanium

• Isolation: connector coupled with the ground terminal

Included accessories:

• Screw: thread 5-40 UNC stainless steel to fix, using hexagonal

wrench, to handle mounting adapters HD2030AC1-2-4

• Screw: double thread 5-40 UNC in copper-beryllium alloy

(081A27)

- 97 -

• Screw: double thread 5-40 UNC and 10-32 UNF in copper-

beryllium alloy (081A90)

• Screw: double thread 5-40 UNC and M3 in copper-beryllium al-

loy (M081A27)

Cable (not included): HD2030.CAB3S-xM (3m, 5m e 10m) to connect accele-

rometer to analyzer.

HDP356A22 type

Type: PCB Piezotronics production miniature triaxial accelero-

meter with integrated electronics (ICP

TM

). This sensor is

normally used for whole body measurements.

Sensitivity: 100 mV/g
Measure range: ±500 m/s

2

Frequency response (±5%): 0.5 Hz ÷ 4 kHz
Resonance frequency: 25 kHz
Linearity: 1% F.S.
Transverse sensitivity: 5% max
Maximum Shock: 5000 gpk
Working Temperature: -54 °C ÷ 77 °C
Polarization Voltage: 10 Vdc
Mechanical features:

• Weight: 5.4 gr

• Dimensions: (height x width x depth) 11.4 mm x 11.4 mm x 11.4 mm

• Mounting: two threaded holes 5-40 UNC aligned with Y and Z axes

• Connector: side 8-36 4 pin

• Material: titanium

• Isolation: connector coupled with the ground terminal

Included accessories:

• Screw: double thread 5-40 UNC in copper-beryllium alloy

(081A27)

• Screw: double thread 5-40 UNC and 10-32 UNF in copper-

beryllium alloy (081A90)

• Screw: double thread 5-40 UNC and M3 in copper-beryllium al-

loy (M081A27)

Cable (not included): HD2030.CAB3S-xM (3m, 5m e 10m) to connect accele-

rometer to analyzer.

HDP356B41 type

Type: PCB Piezotronics production low profile triaxial accelero-

meter with integrated electronics (ICP

TM

) inserted ina a
rubber pad. This sensor is normally used for whole body
measurements; while installed in the specific rubber pad
it can be used to measure seat and seat-back transmit­ted vibrations.

Sensitivity: 100 mV/g
Measure range: ±100 m/s

2

Frequency response (±5%): 0.5 Hz ÷ 1 kHz
Resonance frequency: 27 kHz
Linearity: 1% F.S.
Transverse sensitivity: 5% max
Maximum Shock: 2000 gpk
Working Temperature: -10 °C ÷ 50 °C
Polarization Voltage: 3.5 Vdc
Mechanical features:

• Weight: 10.8 gr (272 gr including the rubber pad)

• Dimensions: (height x width x depth) 9 mm x 32 mm x 21.5 mm

• Pad dimensions: (diameter x thickness) 200 mm x 12 mm

• Mounting: threaded through-hole 10-32 UNF aligned with Z axis

• Connector: side ¼-28 4 pin

- 98 -

• Material: titanium

• Isolation: connector coupled with the ground terminal

Included accessories:

• Cable: HD2030.CAB3-3M (3m) to connect accelerometer to ana-

lyzer.

HDP356B18 type

Type: PCB Piezotronics production triaxial accelerometer with

integrated electronics (ICP

TM

). This sensor is normally
used for whole body buildings transmitted vibration mea­surements.

Sensitivity: 1 V/g
Measure range: ±50 m/s

2

Frequency response (±5%): 0.5 Hz ÷ 3 kHz
Resonance frequency: 20 kHz
Linearity: 1% F.S.
Transverse sensitivity: 5% max
Maximum Shock: 5000 gpk
Working Temperature: -29 °C ÷ 77 °C
Polarization Voltage: 10 Vdc
Mechanical features:

• Weight: 5.4 gr

• Dimensions: (height x width x depth) 20.6 mm x 26.1 mm x 20.3 mm

• Mounting: threaded holes 10-32 UNF aligned with Y and Z axes

• Connector: side ¼-28 4 pin

• Material: light alloy

• Isolation: connector coupled with the ground terminal

Included accessories:

• Screw: double thread 10-32 UNF in copper-beryllium alloy

(081B05)

• Screw: Screw: double thread 10-32 UNF and M6 in copper-

beryllium alloy (M081B05)

Cable (not included): HD2030.CAB3S-xM (3m, 5m e 10m) to connect accele-

rometer to analyzer.

HDD3233A type

Type: Dytran production high sensitivity triaxial accelerometer

with integrated electronics (LIVM

TM

). This sensor is usually
used for the measurement of the vibrations transmitted by
the buildings.

Sensitivity: 1V/g
Measure range: ±50 m/s

2

Frequency response (±10%): 0.4 Hz ÷ 6 kHz axis 3 and 0.4 Hz ÷ 3 kHz exes 1 and 2
Resonance frequency: 20kHz
Linearity: 1% F.S.
Transverse sensitivity: 5% max
Maximum Shock: 5000 gpk
Working Temperature: -51 °C ÷ 93 °C
Polarization Voltage: 12 Vdc
Mechanical features:

• Weight: 28gr

• Dimensions (mm): (height x width x depth) 13 mm x 33 mm x 25

• Mounting: central through hole (for M4 screw) aligned with axis 3

• Connector: side ¼-28 4 pin

• Material: titanium alloy

• Isolation: Body connected to the ground terminal and isolated from

the mounting surface.

Included accessories:

• Screw: mounting screw

- 99 -

Cable (not included): HD2030.CAB3-xM (3m, 5m e 10m) to connect accelero-

meter to analyzer.

Accessories

Whit the accelerometers, the following accessories are supplied as optionally:

• HD6188: tube of hydro-repellent silicone grease and electrically insulating.

• HD6273: tray with bonding wax.

• 080A90: glue for quick fastening.

• 081B05: double threaded screw 10-32 UNF.

• 081A90: double threaded screw 5-40 UNC and 10-32 UNF.

• M081B05: double threaded screw 10-32 UNF and M6 X 0.75.

• M081A27: double threaded screw 10-32 UNF and M3 X 0.5”.

• 081A27: double threaded screw 5-40 UNC.

• HD6239: accelerometer push-rod.

• HD6286: adhesive metallic plate for assembly through magnet. Used to magnetically

couple the accelerometer on non-metal surfaces.

• HD6284: insulated magnetic base with 10-32 UNF threaded hole.

• HD6196: magnetic base with integrated 10-32 UNF screw.

• HD6226: adhesive mounting base with threaded through hole (10-32 UNF).

• HD6245: adhesive mounting insulated base with integrated screw 10-32 UNF.

• HD6220: insulated base with integrated mounting 10-32 UNF screw and threaded hole

10-32 UNF for accelerometer mounting.

- 100 -

REFERENCE STANDARDS

ISO 8041:2005 “Human response to vibration – Measuring instrumentation”
ISO 5349-1:2001 “ Mechanical vibration – Measurement and evaluation of human expo-

sure to hand-transmitted vibration – General requirements”

ISO 5349-2:2001 “ Mechanical vibration – Measurement and evaluation of human expo-

sure to hand-transmitted vibration – Practical guidance for measurement at the workplace”

ISO 2631-1:1997 “Mechanical vibration and shock – Evaluation of human exposure to

whole body vibration – General requirements”

ISO 2631-2:1989 “Evaluation of human exposure to whole body vibration – Continuous

and shock-induced vibrations in buildings (1 to 80 Hz)”

ISO 2631-4:2001 “Evaluation of human exposure to whole body vibration – Guidelines for

the evaluation of the effects of vibration and rotational motion on passenger and crew com­fort in fixed-guideway transport systems”

ISO 2631-5:2004 “Evaluation of human exposure to whole body vibration – Method for

evaluation of vibration containing multiple shocks”

IEC 61260:1995 “Electroacoustics – Octave band and fractional-octave band filters”
ISO 6954:2000 “Mechanical vibration - Guidelines for the measurement, reporting and

evaluation of vibration with regard to habitability on passenger and merchant ships”.

EMC STANDARDS

Protection degree IP64
Safety EN61010-1
Electromagnetic compatibility. Generic standard for immunity. EN61000-6-2:2005

Industrial environment.

Electromagnetic compatibility. Generic standard for emission. EN61000-6-3:2007

Residential, commercial and light industry environments,.

Electrostatic discharge immunity EN61000-4-2 level 3
Susceptibility to EMI EN61000-4-3 level 3
Immunity to electrical fast transients EN61000-4-4 level 3,
Immunity to conducted disturbances EN61000-4-6
Electromagnetic Interference - Conducted Emissions EN55022:2007 class B
Electromagnetic interference - Radiated Emissions IEC/CISPR 22 class B

ITALIAN LEGISLATION

Vibrations in the workplace: D.Lgs 81/2005 and 2002-44-CE European Directive.