IOtech 652u User Manual

USER’S MANUAL

IOtech 652u

1170-0901 rev 1.0

IOtech

25971 Cannon Road

Cleveland, OH 44146-1833

[phone]

Fax: [phone]

[e-mail]

[e-mail]

www.iotech.com

*372562A-01*

372562A-01

Requires one of the following
Operating Systems:

Windows 2000 SP4
Windows XP
Windows Vista

IOtech 652u

10 Channel Dynamic Signal Analyzer for
Vibration Analysis and Monitoring

Warranty Information

Your IOtech warranty is as stated on the product warranty card. You may contact IOtech by phone,
fax machine, or e-mail in regard to warranty-related issues.
Phone: [phone], fax: [phone], e-mail: [e-mail]

Many IOtech products carry the CE marker indicating they comply with the safety and emissions standards of the
European Community. As applicable, we ship these products with a Declaration of Conformity stating which
specifications and operating conditions apply.

Refer all service to qualified personnel. This caution symbol warns of possible personal injury or equipment damage
under noted conditions. Follow all safety standards of professional practice and the recommendations in this manual.
Using this equipment in ways other than described in this manual can present serious safety hazards or cause equipment
damage.

This warning symbol is used in this manual or on the equipment to warn of possible injury or death from electrical
shock under noted conditions.

This ESD caution symbol urges proper handling of equipment or components sensitive to damage from electrostatic
discharge. Proper handling guidelines include the use of grounded anti-static mats and wrist straps, ESD-protective
bags and cartons, and related procedures.

This symbol indicates the message is important, but is not of a Warning or Caution category. These notes can be of
great benefit to the user, and should be read.

In this manual, the book symbol always precedes the words “Reference Note.” This type of note identifies the location
of additional information that may prove helpful. References may be made to other chapters or other documentation.

Tips provide advice that may save time during a procedure, or help to clarify an issue. Tips may include additional
reference.

Limitation of Liability

IOtech, Inc. cannot be held liable for any damages resulting from the use or misuse of this product.

Copyright, Trademark, and Licensing Notice

All IOtech documentation, software, and hardware are copyright with all rights reserved. No part of this product may be

copied, reproduced or transmitted by any mechanical, photographic, electronic, or other method without IOtech’s prior

written consent. IOtech product names are trademarked; other product names, as applicable, are trademarks of their
respective holders. All supplied IOtech software (including miscellaneous support files, drivers, and sample programs)
may only be used on one installation. You may make archival backup copies.

CE Notice

Warnings, Cautions, Notes, and Tips

Specifications and Calibration

Specifications are subject to change without notice. Significant changes will be addressed in an addendum or revision to
the manual. As applicable, IOtech calibrates its hardware to published specifications. Periodic hardware calibration is
not covered under the warranty and must be performed by qualified personnel as specified in this manual. Improper
calibration procedures may void the warranty.

Table of Contents

F

Quick Start

Chapter 1 – What is the IOtech 652u?

Chapter 2 – Block Diagram

Chapter 3 – Connectors, Indicators, and Cables

Front Panel (Analog) Connectors …… 3-1

Introduction …. 3-1
Analog Common …… 3-1
Current Source (IEPE) with Transducer Fault Detection ……. 3-1
Input Coupling …… 3-2
Anti-Aliasing …… 3-2
Analog Triggers …… 3-2

Rear Pannel Connectors and Indicators …… 3-2

External Power ……3-3
Digital I/O (requires eZ-TOMAS)…… 3-3
#6-32 Machine Screw (chassis to earth ground)…… 3-4
USB2.0 …… 3-4
LED Indicators …… 3-4

Chapter 4 – CE Compliance and Noise Considerations

Overview …… 4-1
CE Standards and Directives …… 4-1
Safety Conditions ……4-2
Emissions/Immunity Conditions …… 4-3
CE Rules of Thumb for 652u …… 4-3
Noise Considerations …… 4-4

Chapter 5 – Software Options for 600 Series Devices

eZ-Analyst …… 5-2
eZ-TOMAS …… 5-3
eZ-Balance …… 5-4
eZ-NDT …… 5-5*

Chapter 6 – Product Care and Customer Support

Electrostatic Discharge (ESD), Handling Notice…… 6-1
Product Care …… 6-1
ReadMe Files and the Install CD-ROM …… 6-2
Customer Support …… 6-2

Chapter 7.a – Specifications, IOtech 652u Series

7.b – Specifications, Data Plots

Appendix A – Changing the Device Name

*eZ-NDT does not support IOtech 652u.

IOtech 652u User’s Manual 956991 i

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ii 956991 IOtech 652u User’s Manual

IOtech 652u Quick Start

Before you get started

verify that you have the following items and meet or exceed the
minimum requirements listed.

IOtech 652u
TR-2U Power Supply
USB2.0 port [on PC] and USB Cable
Dynamic Signal Analysis CD
License Keys for purchased software;

e.g., eZ-Analyst, eZ-TOMAS

Monitor: SVGA, 1024 x 768 screen resolution
Windows 2000 SP4 and Windows XP users:

Intel

™

Pentium [or equivalent], 1 GHz

512 MB memory; 10 GB disk space

Windows Vista users:

PC must be Windows Vista Premium Ready

Step 1 - Install Software

1. Close all running applications on the host PC.

2. Insert the Dynamic Signal Analysis CD into your CD-ROM drive and wait for the CD to auto-run. An Opening
Screen will appear. As an alternative, you can download software from: www.iotech.com/ftp.html

3. Click the <ENTER SETUP> button.
Note: If you are downloading software from our website, follow instructions provided there.

4. From the hardware selection screen [which follows a licensing agreement], select the 652u
from the drop-down list and follow the on-screen instructions.

Supply power from the TR-2U to the 652u before connecting the USB cable to the computer. This allows the
652u to inform the host computer (upon connection of the USB cable) that the unit requires minimal power
from the computer’s USB port. When disconnecting a 652u from the PC, unplug the USB cable before

unplugging the TR-2U power cable.

10-Channel, USB2.0 Dynamic Signal Analyzer for Vibration Analysis & Monitoring

Step 2 - Connect the 652u to Power and to the Computer

1. Connect the TR-2U to a standard AC outlet.

2. Connect the TR-2U to the External Power connector on the 652u.

3. Using a USB cable, connect the 652u to a USB2.0 port on the computer. USB2.0 port is required.

4. Follow the computer screen prompts as directed to allow the computer to detect your new hardware.

1170-0940 rev 1.0 324996A-01

IOtech

25971 Cannon Road

Cleveland, OH 44146-1833

Phone: [phone]

Fax: [phone]

E-mail: [e-mail]

E-mail: [e-mail]

Internet: www.iotech.com

LED Notes: The “Power” LED blinks during device detection and initialization; then remains on solid as long as

CAUTION

Turn off power to the system devices and externally connected equipment before
connecting cables. Electric shock or damage to equipment can result even under
low-voltage conditions.

Take ESD precautions (packaging, proper handling, grounded wrist strap, etc.)

Reference Notes:

Adobe Acrobat PDF versions of documents pertaining to IOtech 652u are automatically installed onto
your PC’s hard-drive as a part of product support at the time of software installation. The default
location is the Programs group. It can be accessed via the Windows Desktop Start Menu.

*324996A-01*

324996A-01

Digital I/O
Channel
Designation

the module has power. If there is insufficient power the LED will go off. The “Active” LED is on whenever active
communication is taking place between 652u and the host PC. It will be on solid during data acquisitions.

Step 3 - Connect Data Acquisition Signal Lines

The 652u has 10 analog channel inputs (CH1 through CH10) via front panel BNC connectors and 8 digital I/O
lines via rear panel DB9 connector.

Prior to making signal connections review the Specifications chapter of your user’s manual to ensure that the input
signals do not exceed the specified limits. The manual is included in PDF format on the CD.

Printed in Hungary

What is the IOtech 652u? 1

Model

Interface

Analog

Input

Channels

High Pass

Filter

Cutoff

Analog

Input

Range

Analog
Output

Channels

Digital I/O

Channels

External Power

Connector

652u

USB2.0

10

0.1 Hz

±40 V 0 8

6 to 16 VDC

1 amp (max.)

eZ-Analyst

Records and analyzes time history data and performs impact (resonance) testing.

eZ-Balance

Provides a solution for multi-plane field balance applications of rotating machinery. The
application computes the optimal balance weights and their locations based on vibration

data collected from the analyzer.

eZ-TOMAS

Acquires, monitors, and analyzes rotating machinery data for steady-state and transient
conditions.

eZ-TOMAS Remote

An optional add-on which allows you to remotely monitor and/or control operation of
eZ-TOMAS. The option is sold separate.

IOtech 652u Front and Rear Panels

IOtech 652u is a dynamic signal analyzer used for monitoring and analyzing machinery and structures in regard to
sound, vibration, and rotation. The device hardware is the signal conditioning and acquisition engine, while the
software defines the specific analysis and monitoring features of the system. Since the software [in the host PC]
determines which capabilities will be used, it is easy to upgrade the system and add more capabilities over time.

Basic profile:

There are currently four end-user software application packages available for IOtech 652u. A brief description of
each follows. For more information refer to Chapter 5, Software Options. For detailed information refer to the
specific software user’s manual. The DSA CD includes PDF versions of the software documents.

The IOtech 652u includes a high-speed USB2.0 engine. The USB interface allows all acquired data to be
transferred to the PC in real time at 1.05 Meg samples/sec. This means that every acquired data point can reside on
the host PC’s hard drive, making re-creation and post acquisition analysis of acquired data as precise as possible.
Many other analyzers simply store frequency-domain information, which results in play-back that is less precise
than the original real-time measurement. In comparison, the 652u (and also our 640 and 650 models) transmit all
time-domain measurements. This means there is no data loss when analyzing acquired waveforms. Since the data
is already on the host PC’s hard drive there is no time lost transferring data.

Another advantage of the 652u architecture is that there is virtually no limit to the length of time continuous data
can be acquired. Many other systems do not offer continuous time-domain transfer to the PC, and as a result the
waveform length is limited by the amount of built-in data storage. In regard to our 652u, the only limitation is the
amount of available hard disk memory on the host PC, or that which can be accessed by a PC on a network.

IOtech 652u User’s Manual 938791 What is the IOtech 652u? 1-1

Features of the Dynamic Signal Inputs

o a current source for transducer biasing (IEPE)
o detection of a transducer fault
o AC coupling: 0.1 Hz; or DC coupling
o ±40 V range
o anti-aliasing filters: 3-pole low pass filter in hardware;

software FIR filters are automatically set for each analysis rate

o pseudo-differential inputs
o support for TEDS (Transducer Electronic Data Sheet) in eZ-Analyst
o any analog input channel can serve as a tach input
o tight channel-to-channel phase matching

USB2.0 ready - Easy Connection to USB2.0-ready Notebooks, Desktop PCs, or USB2.0 Hubs.

Note that the USB2.0 port allows a continuous stream of data to be collected and stored in the host PC.

Analog Input Channels: 10 BNC connectors

8 Digital I/O Channels: DB9 connector for connection of Digital I/O signal lines.

Note: eZ-NDT or eZ-TOMAS software must be used to make use of the Digital I/O.

Analog Channel Triggering

Pre- and Post-Trigger Readings

1-2 What is the IOtech 652u? 938791 IOtech 652u User’s Manual

Block Diagram 2

IOtech 652u User’s Manual 948491 Block Diagram 2-1

IOtech 652u Block Diagram

USB2.0

The IOtech 652u transfers acquired data to the PC via a USB2.0 connection. It is important to note that
USB ports and USB hubs cannot supply sufficient power to a 652u.

Power

Power (6 to 16VDC at 400mA) is typically supplied by a TR-2U power adapter connected to the External
Power Jack. An equivalent source of DC power can be used in place of a TR-2U.

LEDs

Active

The Active LED is on whenever active communication is taking place between the 652u and
the host PC. Note that the Active LED will be on solid during a data acquisition.

Power

The “Power” LED blinks during device detection and initialization; then remains on solid
as long as the module has power. If there is insufficient power the LED will go off.

Digital
I/O

To make use of the Digital I/O feature the 652u must be operating with eZ-TOMAS or eZ-NDT.
The 8-bits of digital I/O are provided via a rear panel DB9 connector. Each bit is programmable as
input or output.

BNCs

Up to ten BNC connectors, designated as Channels 1 through 10, can be used to connect analog input
signals to the 652u. The BNC center-conductor is the signal HI and the BNC shell is the signal LO.

General Comments

The following short descriptions are provided to supplement the preceding block diagram. For additional information
refer to Chapter 3, Connectors, Indicators, and Cables.

2-2 Block Diagram 948491 IOtech 652u User’s Manual

Connectors, Indicators, and Cables 3

Front Panel (Analog) Connectors …… 3-1

Introduction …. 3-1
Analog Common …… 3-1
Current Source (IEPE) with Transducer Fault Detection ……. 3-1
Input Coupling …… 3-2
Anti-Aliasing …… 3-2
Analog Triggers …… 3-2

Rear Pannel Connectors and Indicators …… 3-3

External Power ……3-3
Digital I/O (requires eZ-TOMAS)…… 3-3
#6-32 Machine Screw (chassis to earth ground)…… 3-4

USB2.0 …… 3-4
LED Indicators …… 3-4

The front panel includes ten BNC connectors for voltage input. These are labeled CH1 through CH10. The front
panel also includes analog common. The IOtech 652u includes circuitry for dynamic analog signal conditioning.
The circuitry typically interfaces with piezoelectric transducers that include, but are not limited to: accelerometers,
microphones, tachometers, and force/pressure transducers.

TIP: Additional measurement noise may be present when using earth grounded transducers.
For best results electrically isolate the input transducers from earth ground.

Front Panel (Analog) Connectors

652u Front Panel

Introduction

Features of the 652u’s dynamic signal conditioning circuit include:

o current source for transducer biasing (IEPE)
o detection of a transducer fault
o AC or DC coupling
o ±40 V range
o anti-aliasing filters: 3-pole low pass filter in hardware; programmable digital filtering via software
o pseudo-differential inputs
o support for TEDS (Transducer Electronic Data Sheet), requires eZ-Analyst
o any analog input channel can serve as a tach input
o channel-to-channel phase matching
o signal parameters are independently controlled in software on a per channel basis

Analog Common

The BNC shells for the analog input channels have a 1k ohm resistance from the BNC shell to analog ground. The
BNC center-conductor is the signal HI and the BNC shell is the signal LO. Each BNC shell is connected to the
chassis ground through its own channel-dedicated 1 k resistor. Consequently, the shell is not meant to be driven
with respect to earth ground more than ±10V.

If the host computer is a desktop PC, then the computer ground will likely connect to the AC power line ground.
If the host computer is a notebook PC, then the computer ground could be: (a) floating, for example, when operating
on batteries, or (b) connected to a vehicle ground, for example, when using an automotive cigarette lighter adapter in

conjunction with the vehicle’s battery.

652u User’s Manual 957091 Connectors, Indicators, and Cables 3-1

Current Source (IEPE) with Transducer Fault Detection

Reference Notes:

For detailed information, refer to the applicable software document, i.e., eZ-TOMAS or eZ-Analyst.
PDF versions of the documents can be accessed via the <View PDFs> button on the Dynamic Signal
Analysis (DSA) CD’s opening screen.

In addition to software documentation, information regarding aliasing, anti-aliasing, sensors,
accelerometers, sound and vibration, and transducers may prove useful to your application. The
internet is a great source for this material.

In regard to TEDS (Transducer Electronic Data Sheet), you may find the IEEE 1451 standard to be of
interest.

Note: IEPE current source can only be enabled when AC Coupling is selected.
If IEPE is selected in software, a constant current is supplied to bias IEPE transducers. The bias current is sourced

through the center conductor of the input channel BNC connector and returns to the conditioning circuit by the outer
conductor. The current source features a voltage operating compliance and is short-circuit and over-voltage
protected as stated in the specifications. Operating compliance refers to the highest voltage that can be sourced
without change of the current source value. In the absence of a transducer, the current source will output a higher
open circuit voltage. For unused channels and for other applications that do not require bias, the current
source should be disabled from the input via software control, on a per channel basis.

When the current source is enabled, the input voltage is continuously monitored with level detection circuitry for
indicating an open transducer (high voltage) or a transducer short (low voltage). Existence of either condition
triggers a transducer fault for the associated channel. This error is communicated to the user on the monitor via
software and is also available through a software status request at the end of an acquisition. Faults are detected and
communicated when present. Detection of a fault does not alter the acquisition process or its data.

Input Coupling

The analog input channels can be independently set in software to AC Coupling or to DC Coupling. When AC
Coupling is selected, the input signal passes through a high pass filter. When DC Coupling is selected the high-pass
filter is bypassed.

Anti-Aliasing

The 652u analyzer includes three-pole anti-aliasing filters and 24-bit sigma/delta analog-to-digital converters (ADC).
The converters exhibit an alias frequency band between 1.69MHz and 6.75MHz, which eases the requirements of the
anti-aliasing filters. Transducers seldom have significant energy at these high frequencies. However, should there
happen to be such energy, the filters will attenuate it. Refer to the specifications chapter for details, including a
response chart.

Analog Triggers

The IOtech 652u signal analyzer can be triggered per software configuration relevant to the 10 analog input
channels. Refer to the associated software documentation regarding the various types of triggers and how to set
them.

3-2 Connectors, Indicators, and Cables 957091 652u Users Manual