Virtins technology Digiducer 333D01 User manual

Digiducer 333D01 USB Digital Accelerometer + Multi-Instrument Manual
Virtins Technology
Digiducer 333D01 USB Digital Accelerometer + Multi-
Instrument Manual
Note: VIRTINS TECHNOLOGY reserves the right to make modifications to this manual at any time without
notice. This manual may contain typographical errors.
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Digiducer 333D01 USB Digital Accelerometer + Multi-Instrument Manual
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TABLE OF CONTENTS
1 INSTALLATION AND QUICK START GUIDE..........................................................................................3
1.1 PACKAGE CONTENTS ....................................................................................................................................3
1.2 MULTI-INSTRUMENT SOFTWARE INSTALLATION ..........................................................................................3
1.3 HARDWARE DRIVER INSTALLATION .............................................................................................................3
1.4 START MULTI-INSTRUMENT SOFTWARE .......................................................................................................4
1.5 SENSOR SENSITIVITY ....................................................................................................................................5
1.6 FILE INPUT &OUTPUT ..................................................................................................................................6
1.7 HARD RESET.................................................................................................................................................7
1.8 NON-ROUTINE APPLICATIONS.......................................................................................................................7
2 SPECIFICATIONS...........................................................................................................................................8
2.1 DIGIDUCER 333D01 USB DIGITAL ACCELEROMETER SPECIFICATIONS........................................................8
2.2 MULTI-INSTRUMENT SOFTWARE SPECIFICATIONS......................................................................................10
2.3 SOFTWARE DEVELOPMENT INTERFACE SPECIFICATIONS ............................................................................15
3 MULTI-INSTRUMENT SOFTWARE LICENSE INFORMATION.........................................................17
3.1 LICENSE TYPES...........................................................................................................................................17
3.2 LICENSE UPGRADE FROM ONE LEVEL TO ANOTHER ....................................................................................17
3.3 SOFTWARE UPGRADE FOR THE SAME LICENSE LEVEL .................................................................................17
4 EXTENDED USE OF MULTI-INSTRUMENT SOFTWARE...................................................................18
5 MEASUREMENT EXAMPLES....................................................................................................................19
6 SAFETY INSTRUCTIONS............................................................................................................................20
7 WARRANTY...................................................................................................................................................20
8 DISCLAIMER.................................................................................................................................................20
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Digiducer 333D01 USB Digital Accelerometer + Multi-Instrument Manual
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1 Installation and Quick Start Guide
Digiducer 333D01 USB digital accelerometer is the first fully integrated and ruggedized
packaging of a high-resolution, broad-frequency piezoelectric accelerometer with integrated
internal digital data acquisition. When used in conjunction with Multi-Instrument® software,
the setup allows you to take reliable and quality vibration measurements as simply as plug &
play. No external power supply, data acquisition hardware, driver installation and manual
entry of sensor sensitivity are required. It is a truly hassle-free portable vibration test &
measurement solution.
1.1 Package Contents
A standard package contains the following items:
1) Digiducer 333D01 USB digital accelerometer with a 2.9 m USB cable.
2) Hardware activated Multi-Instrument Pro* software license (the software will be
automatically activated with the USB accelerometer connected to the computer).
3) CD (contains the copy-protected Multi-Instrument software)
4) Magnetic mounting base
1.2 Multi-Instrument Software Installation
Insert the installation CD into your computer’s CD-ROM drive and follow the instruction on
the screen to install the Multi-Instrument software. The software can also be downloaded
from www.virtins.com/MIsetup.exe.
1.3 Hardware Driver Installation
The USB accelerometer supports sound card MME driver which comes natively with all
Windows versions. Thus, hardware driver installation is not required. Sound Card MME
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supports Sampling Rate Conversion (SRC). That is, if you select a sampling rate that is not
natively supported by the hardware, the driver will do the sampling rate conversion
automatically without popping up an error message. Sampling rate conversion may introduce
additional noises and distortions. Thus for vibration measurement, it is recommended to use
the sampling rates that are originally supported by the hardware. Please check the hardware
specifications for details.
It is possible to use sound card ASIO driver for the USB accelerometer. The ASIO driver can
be downloaded from http://www.asio4all.com. ASIO driver only supports sampling rates
which are natively supported by the hardware.
1.4 Start Multi-Instrument Software
To start the Multi-Instrument software, with the USB accelerometer connected, on
Windows desktop, click the MI icon directly, or select [Start]>[All Programs]>[Multi-
Instrument]>[VIRTINS Multi-Instrument] (for Windows XP, Vista, 7 and similarly for other
Windows versions). The software will get activated automatically.
The USB accelerometer may not be the default ADC device used by the software. To
configure the USB accelerometer as the ADC device of the software, stop the oscilloscope
first by clicking the green button at the upper left corner of the screen, then go to
[Setting]>[ADC Device] and select “Sound Card MME” in the Device Model selection box,
and select “…333D01…” in the Device No. selection box. You can now use the USB
accelerometer to do vibration measurement.
If you want to use ASIO driver instead, select “333D01-ASIO4ALL” in the Device Model
selection box, and select “ASIO4ALL…” in the Device No. selection box. You need also to
select “333D01” in the ASIO4ALL panel. You can then use the USB accelerometer to do
vibration measurement.
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The default sampling rate of 333D01 is set to 48 kHz and the default bit resolution is set to
24 bits. This will give optimal measurement accuracy although other sampling rates and bit
resolutions are also supported.
1.5 Sensor Sensitivity
The sensitivity of USB accelerometer is calibrated individually in factory and persisted in the
hardware. Multi-Instrument is able to read it out automatically and use it to scale the acquired
data for processing, analysis and display. So usually you do not need to bother about it.
The USB accelerometer has two sensitivity values, one for each of the two channels. The
sensitivity of Channel B roughly doubles that of Channel A, thus the measurement range of
Channel B is about ½ of that of Channel A.
If you want to check the sensitivity values, go to [Setting]>[Calibration]. The sensitivity will
be shown with the unit of g/V. Please make sure that the values in “Range (V)” column under
Sound Card Input Calibration Factor are all “1” V (default values). The measurement range
of the sensor is then ± 1/sensitivity (g).
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Please also make sure that in the main software window, “Probe” switch position is at “1”
(default values).
1.6 File Input & Output
Multi-Instrument supports standard and extensible WAV files in PCM format. Therefore,
you may use some readily available audio recording software on Windows, MacOS, iOS,
Andriod, etc. to record vibration data in WAV file format (or record and then convert to
WAV file format), and then use Multi-Instrument to analyze the data through [File]>[Open]
command. If the WAV file contains sensor sensitivity information, then it will be
automatically recognized and used. The vibration data captured using Multi-Instrument can
be output as a WAV file with sensor sensitivity embedded through [File]>[Save] or [Save
As]. It can also be exported as TXT file with sensor sensitivity information by right clicking
anywhere within the oscilloscope window and select [Oscilloscope Export]. You can also use
[Oscilloscope Copy As Text] to put the data in Windows Clipboard and later paste them out
into a text editing software such as Microsoft Excel.
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1.7 Hard Reset
A hard reset can be done via disconnecting the USB accelerometer from your computer and
then re-connect it to the computer again. You should only do this with the Multi-Instrument
software closed.
1.8 Non-routine Applications
The non-routine applications refer to those applications that are not considered as routine
tasks of an accelerometer. With Multi-Instrument’s capability of simultaneous input and
output, you can generate a stimulus to a Device Under Test (DUT) and acquire the response
from it at the same time. Different stimuli can be generated and the responses can be
analyzed in different ways. The characteristics of the DUT, such as frequency response and
distortion, can then be obtained. You can even configure and then perform a sequence of
automated test steps to evaluate a DUT using the Device Test Plan software module.
You can configure the output device via [Setting]>[DAC Device]. For example, the
computer sound card can be used to generate vibration stimulus to some external devices
which then generate mechanical vibration.
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2 Specifications
2.1 Digiducer 333D01 USB Digital Accelerometer Specifications
Performance
English SI
Sensitivity1,2 Channel A: 4.3 % FSV/g
Channel B: 8.4 % FSV/g
Channel A: 0.44 % FSV/m/s2
Channel B: 0.86 % FSV/m/s2
Measurement Range3Channel A: ±20 g pk
Channel B: ±10 g pk
Channel A: ±196 m/s2
Channel B: ±98 m/s2
ADC Bandwidth (-3dB) 9.3 cpm to 1374000 cpm 0.155 Hz to 22900 Hz
Frequency Range (±5%) 120 cpm to 480000 cpm 2 Hz to 8000 Hz
Frequency Range (±10%)390 cpm to 660000 cpm 1.5 Hz to 11000 Hz
Frequency Range (±3dB)354 cpm to 900000 cpm 0.9 Hz to 15000 Hz
Resonant Frequency ≥1500000 cpm ≥25000 Hz
Mounted Resonance31044000 cpm 17400 Hz
Mounted Resonance
Amplification3200% 200%
Broadband Resolution1(1Hz to
10000Hz) 0.0025 g pk 0.0245 m/s2pk
Non-Linearity4≤2% ≤2%
Transverse Sensitivity3≤5% ≤5%
Electrical
Communication Standard USB 2.0 Full Speed
Power Consumption3≤45 mA
Internal ADC 24 bit
Supported Sampling Rates 48 kHz, 44.1 kHz, 32 kHz, 22.05 kHz, 16 kHz, 11.025 kHz, 8 kHz at 24bits /
16bits / 8bits
Case Isolated No
Interface USB 2.0 Full Speed / USB 1.1 Full Speed / USB Isolator
Mechanical
English SI
Size-Hex 1.0 in 25.4 mm
Size - Height 2.6 in 66.0 mm
Weight 4.62 oz 131 gram
Mounting Thread 1/4-28 UNF 1/4-28 UNF
Mounting Torque 2 lbf.ft to 5 lbf.ft 2.7 N.m to 6.8 N.m
Sensing Element Piezoelectric Ceramic Piezoelectric Ceramic
Sensing Geometry Shear Shear
Housing Material Stainless Steel Stainless Steel
Sealing Welded Hermetic Welded Hermetic
Electrical Connector USB Type A Male USB Type A Male
Electrical Connection Position Top Top
Cable (Integral) Length 9.6 ft 2.9 m
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2.2 Multi-Instrument Software Specifications
Please refer to Multi-Instrument software manual for detail. The following table shows the
function allocation matrix for Multi-Instrument series. The Spectrum 3D Plot, Data Logger,
LCR Meter, Device Test Plan, Vibrometer are add-on modules/functions and should be
purchased separately, and they are only available for Multi-Instrument Lite, Standard, and
Pro editions, except that the Vibrometer is only available for Multi-Instrument Standard and
Pro editions.
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Legend: - Function available
Sound Card
Oscilloscope
Sound
Card
Spectrum
Analyzer
Sound
Card
Signal
Generator
Multi-
Instrument
Lite
Multi-
Instrument
Standard
Multi-
Instrument
Pro
General Functions
Sound Card MME 
Sound Card ASIO 
Other Hardware 
ADC / DAC Hardware
vtDAQ, vtDAO
software
development kit
License automatically activated with the presence of the corresponding hardware, e.g. a
USB hardkey or a VT DSO.
Load WAV File 
Load TXT File 
Load WAV File
Frame by Frame
(fore Long WAV
File)

Combine WAV
Files

Extract Data and
save them into a
new WAV File

File Operation
Save/Load Panel
Setting

Copy Text to
Clipboard

Copy BMP to
Clipboard

Print Preview 
Print 
Export as TXT File 
Data Export
Export as BMP File 
Trigger Mode 
Trigger Source 
Trigger Edge 
Trigger Level 
Trigger Delay 
High Frequency
Rejection

Trigger Settings
Noise Rejection 
Sampling Rate 
Sampling Channels 
Sampling Bit
Resolution

Sampling Settings
Record Length 
Input 
Output

Probe 
Sound Pressure
Level

F/V Conversion 
Latency for Sync.
Output/Input

Sensor Sensitivity 
Calibration
Load Factor for
Power Calculation

Zoom 
Scroll 
Cursor Reader 
Marker 
Graph
Operation
Chart Type 
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Sound Card
Oscilloscope
Sound
Card
Spectrum
Analyzer
Sound
Card
Signal
Generator
Multi-
Instrument
Lite
Multi- Multi-
Instrument Instrument
Standard Pro
Line Width 
Color 
Fast/Slow Display
Mode

Refresh Delay 
Font Size 
Roll Mode 
Reference Curves 
Gain Adjustment 
Input Peak Indicator 
Sound Card
Selection

Sampling Parameter
Auto Setting

Multilingual GUIs 
Show/Hide Toolbar 
Lock/Unlock Panel
Setting

Hot Panel Setting
Toolbar

Others
ActiveX
Automation Server

Oscilloscope
Individual
Waveform

(offline)

Waveform
Addition

(offline)

Waveform
Subtraction

(offline)

Waveform
Multiplication

(offline)

Type
Lissajous Pattern 
(offline)

FFT Low Pass 
FFT High Pass 
FFT Band Pass 
FFT Band Stop 
FFT Frequency
Response

FIR Low Pass 
FIR High Pass 
FIR Band Pass 
FIR Band Stop 
FIR Frequency
Response

Digital Filtering
IIR Coefficients 
Max, Min, Mean,
RMS

(offline)

Record Mode 
Persistence Display
Mode

Equivalent Time
Sampling Mode

Others
Analog & Digital
Signal Mixed
Display

Spectrum Analyzer
T
yp
Amplitude
Spectrum

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Sound Card
Oscilloscope
Sound
Card
Spectrum
Analyzer
Sound
Card
Signal
Generator
Multi-
Instrument
Lite
Multi- Multi-
Instrument Instrument
Standard Pro
Phase Spectrum 
Auto-correlation 
Cross-correlation 
Coherence 
Transfer Function 
Impulse Response 
Frequency
Compensation

Frequency
Weighting

Remove DC 
Intra-Frame
Processing
Smoothing via
Moving Average

Peak Hold 
Linear Average 
Inter-Frame
Processing
Exponential
Average

THD,THD+N,SNR,
SINAD,Noise
Level, ENOB

IMD 
Bandwidth 
Crosstalk 
Harmonics & Phase 
Energy in User
Defined Frequency
Band

Parameter Measurement
Peaks, SFDR 
FFT Size
128~32768

FFT Size
65536~4194304

Intra-Frame
Average

Window function 
FFT
Window Overlap 
Peak Frequency
detection

Cross Correlation
Peak detection

Octave Analysis
(1/1, 1/3, 1/6, 1/12,
1/24, 1/48, 1/96)

Others
Linear/Log Scale
for X and Y

Signal Generator
Sine

Rectangle 
Triangle

Saw Tooth 
White Noise 
Pink Noise 
MultiTones 
Arbitrary Waveform 
MLS

DTMF 
Waveform
Musical Scale 
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Sound Card
Oscilloscope
Sound
Card
Spectrum
Analyzer
Sound
Card
Signal
Generator
Multi-
Instrument
Lite
Multi- Multi-
Instrument Instrument
Standard Pro
Wave File 
Play Waveform in
Oscilloscope

Cyclic Play
Waveform in
Oscilloscope

Normal

Burst (Mask)
Phase Locked 
Fade In 
Fade
Fade Out 
Frequency Sweep
(Linear/Log)

Sweep
Amplitude Sweep
(Linear/Log)

Software Loopback
(all channels)

Software Loopback
(1 channel)

Sync. with
Oscilloscope

Save as WAV file 
Save as TXT file 
DDS

Others
DC Offset 
Multimeter
RMS 
dBV 
dBu 
dB 
dB(A) 
dB(B) 
dB(C) 
Frequency Counter 
RPM 
Counter 
Duty Cycle 
Frequency/Voltage 
Cycle RMS 
Type
Cycle Mean 
Counter Trigger
Hysteresis

Counter Trigger
Level

Settings
Frequency Divider 
DDP Viewer
DDP & UDDP
display

HH, H, L, LL
Alarm

Set Display
Precision

Function
Define UDDP 
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Legend: Blank - Function available if purchased Shaded Blank - Function NOT available for that edition
Sound Card
Oscilloscope
Sound
Card
Spectrum
Analyzer
Sound
Card
Signal
Generator
Multi-
Instrument
Lite
Multi-
Instrument
Multi-
Instrument
Pro
Spectrum 3D Plot
Waterfall Plot
Type
Spectrogram
Spectrogram Color
Palette
Waterfall Color
Palette
Waterfall tilt Angle
Waterfall /
Spectrogram Height
Linear / Log Scale
for X and Y
Settings
Number of Spectral
Profiles (10~200)
Others
3D Cursor Reader
Data Logger
Real Time Logging
Load Historical Log File
Three logging methods
167 derived data points
available for logging
Up to 8 8 = 64 variables
can be logged
simultaneously
LCR Meter
High Impedance
Measurement
Low Impedance
Measurement
Up to 8 X-Y Plots
(Linear/Log)
Device Test Plan
18 Instructions
Create/Edit/Lock/Execute/L
oad/Save a Device Test
Plan
Up to 8 X-Y Plots
(Linear/Log)
Device Test Plan Log
Vibrometer
RMS, Peak/PP, Crest Factor
for acceleration, velocity,
displacement (in
Multimeter)
Waveform conversion
among acceleration,
velocity and displacement
(in Oscilloscope)
2.3 Software Development Interface Specifications
Multi-Instrument provides the following secondary development features:
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1. Multi-Instrument can work as an ActiveX automation server so that an external program
can access the data and functions that Multi-Instrument exposes. You can integrate Multi-
Instrument into your own software seamlessly via the ActiveX automation server
interfaces exposed by Mutil-Instrument.
Please refer to: Multi-Instrument Automation Server Interfaces
Download link:
http://www.virtins.com/Multi-Instrument-Automation-Server-Interfaces.pdf
The above document and the sample automation client programs in Visual C++ and
Visual Basic can be found in the AutomationAPIs directory of the software.
2. You can use the vtDAQ and vtDAO interface DLLs supplied in this software to allow
your own back-end software to interface to sound cards, NI DAQmx cards, VT DSOs,
etc.. You can also develop your own vtDAQ and vtDAO compatible DLLs to allow
Multi-Instrument to interface to your own hardware.
Please refer to: vtDAQ and vtDAO_Interfaces
Download link:
http://www.virtins.com/vtDAQ-and-vtDAO-Interfaces.pdf
The above document and the sample DAQ and DAO back-end programs and sample
vtDAQ compatible DLL in Visual C++ can be found in the DAQDAOAPIs directory of
the software.
3. Virtins Technology’s Signal Processing and Analysis (vtSPA) Application Programming
Interfaces (APIs) provides a suite of generic APIs for data processing and analysis. It
contains some unique features / algorithms originated and only available from Virtins
Technology.
Please refer to: Signal Processing and Analysis (vtSPA) Interfaces
Download link:
http://www.virtins.com/Signal-Processing-and-Analysis-APIs.pdf
The above document and the sample programs in Visual C++ can be found in the
DAQDAOAPIs directory of the software.
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3 Multi-Instrument Software License Information
3.1 License Types
The License of Multi-Instrument software has six levels and five add-on modules/functions.
The six levels are: Sound Card Oscilloscope, Sound Card Spectrum Analyzer, Sound Card
Signal Generator, Multi-Instrument Lite, Multi-Instrument Standard, Multi-Instrument Pro.
The five add-on modules/functions are: Spectrum 3D Plot, Data Logger, LCR Meter, Device
Test Plan, Vibrometer.
The license contained in the standard Digiducer 333D01 USB Digital Accelerometer +
Multi-Instrument package is a hardware activated Multi-Instrument Pro license, without any
add-on modules/functions. No softkey (activation code) and USB hardkey (USB dongle) are
provided in this type of license. The software will run under the licensed mode as long as the
licensed USB accelerometer unit is connected to your computer before you start the Multi-
Instrument software.
Note: If the software is started without the licensed USB accelerometer unit connected to the
computer, it will enter into 21-day fully functional trial mode, unless the software is activated
by a softkey (activation code) or a hardkey (USB dongle), which are NOT included in the
standard package here and should be purchased separately as a brand-new license if needed.
In other words, the licensed USB accelerometer hardware should always be connected to the
computer in order for the Multi-Instrument software to work under the licensed mode, even
though you might just want to use your computer sound card for ADC and DAC.
3.2 License Upgrade from one level to another
You can purchase an upgrade of the license, e.g. from Multi-instrument Pro to Multi-
Instrument Pro + Spectrum 3D Plot + Vibrometer, at any time if necessary. After you
purchase the upgrade, an upgrade file will be sent to you via email. You can then use it to
replace the same file under the root directory of the Multi-Instrument software.
3.3 Software Upgrade for the same license level
Software upgrade for the same license level (if the hardware is still supported by the new
version), e.g. from Multi-Instrument 3.0 Standard to Multi-Instrument 3.1 Standard, is
always FREE. You just need to download the new version from our website and install it to
any computer. The downloaded version will automatically recognize the license level your
USB accelerometer owns.
Thus, please do visit frequently our website to see if a new version or build is available.
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4 Extended Use of Multi-Instrument Software
Multi-Instrument is a powerful multi-function virtual instrument software. It supports a
variety of hardware ranging from sound cards which are available in almost all computers to
proprietary ADC and DAC hardware such as NI DAQmx cards, VT DSO units, and so on.
Furthermore, the ADC and DAC device can be chosen independently in Multi-Instrument.
For example, you can use the USB accelerometer for vibration data acquisition and use your
computer’s sound card for vibration signal generation simultaneously.
You can change the ADC device via [Setting]>[ADC Device]>[Device Model] (Note: this
menu item is disabled when the oscilloscope or the signal generator is running). For example
you can also use your computer’s sound card as the ADC device.
You can choose a DAC device via [Setting]>[DAC Device]>[Device Model] (Note: this
menu item is disabled when the oscilloscope or the signal generator is running). For example,
you can use your computer’s sound card as the DAC device and thus make full use of the
signal generator function of Multi-Instrument.
If you want to use the sound card as the ADC/DAC device, you may need to purchase the
dedicated sound card oscilloscope probe kit from Virtins Technology separately, or you may
make the connection by yourself.
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Digiducer 333D01 USB Digital Accelerometer + Multi-Instrument Manual
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5 Measurement Examples
1) Digiducer 333D01 with Multi-Instrument Pro
(2) Digiducer 333D01 with Multi-Instrument Pro + Spectrum 3D Plot + Vibrometer
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Virtins Technology
6 Safety Instructions
!
Always keep in mind that the USB accelerometer are NOT galvanically isolated from the
computer connected.
It should be noted that for many computers (typically desktop PCs or laptop PCs with a
built-in AC power supply adapter), the metal case of the accelerometer is connected to
mains earth through the USB port of the computer. This is not a problem if the test article
surface is not conductive or floating (i.e. isolated from earth). Otherwise, you MUST
make sure that the accelerometer is mounted on a surface that is also at the same earth
potential, or else mounting isolation or a USB isolator should be used.
7 Warranty
Virtins Technology guarantees this product against defective materials and manufacturing
defects for a period of 12 months. During this period of warranty, a replacement of the faulty
part will be shipped to the buyer's address free of charge upon receiving and verifying the
returned faulty part. The Warranty is only applicable to the original buyer and shall not be
transferable. The warranty shall exclude malfunctions or damages resulting from acts of God,
fire, civil unrest and/or accidents, and defects from using wrong electrical supply/voltage
and/or consequential damage by negligence and/or abuse, as well as use other than in
accordance with the instructions for operation. The Warranty shall immediately cease and
become void if the hardware is found to have been tampered, modified, repaired by any
unauthorized person(s). Decisions by Virtins Technology on all questions relating to
complaints as to defects either of workmanship or materials shall be deemed conclusive and
the buyer shall agree to abide by such decisions.
8 Disclaimer
This document has been carefully prepared and checked. No responsibility can be assumed
for inaccuracies. Virtins Technology reserves the right to make changes without prior notice
to any products herein to improve functionality, reliability or other design aspects. Virtins
Technology does not assume any liability for loses arising out of the use of any product
described herein; neither does its use convey any license under it patent rights or the rights of
others. Virtins Technology does not guarantee the compatibility or fitness for purpose of any
product listed herein. Virtins Technology’s products herein are not authorized for use as
components in life support services or systems. Virtins Technology should be informed of
any such intended use to determine suitability of the products.