Measurement-computing IOtech 640 Series Uživatelský manuál Strana 14
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1-2 What are IOtech 640 & 650 Series Devices? 878893 IOtech 640 & 650 Series
The IOtech 640e and 650e include a high-speed Ethernet engine powered by a PowerPC processor. The
640u and 650u include a high-speed USB2.0 engine. These Ethernet and USB interfaces allow all
acquired data to be transferred to the PC in real time at 630k 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
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 640/650 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
640/650 units, 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.
• Features of the Dynamic Signal Inputs
o a current source for transducer biasing (ICP)
o detection of a transducer fault
o AC coupling: 0.1 Hz for IOtech 650 models; 1.0 Hz for IOtech 640 models; or DC coupling
o ±10 V range (IOtech 640 models)
o ±40 V range (IOtech 650 models)
o anti-aliasing filters: 3-pole low pass filter in hardware; set appropriately 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 channel-to-channel phase matching
• For 640u and 650u - 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.
• For 640e and 650e - Easy Connection to Ethernet-ready Notebooks, Desktop PCs, or Ethernet Hubs.
Note that the 10/100BaseT Ethernet port allows a continuous stream of data to be collected and stored
in the host PC.
• Analog Input Channels: 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
- IOtech 640 & 650 Series 1
- 878893 iii 3
- 878893 4
- About the Documentation 5
- Table of Contents 7
- (eZ-Analyst only) 8
- *324539B-01* 10
- Before you get started 11
- Step 1 - Install Software 11
- *324540B-01* 12
- 878893 Block Diagram 2-1 15
- General Comments 16
- Signal Conditioning 17
- Digital I/O 17
- 878893IOtech 640/650 Series 18
- Rear Panel Connectors 20
- Unit Underside 21
- Accessories 22
- System Requirements 23
- Software Installation 24
- Overview 25
- CAUTION 25
- Install the Software 26
- How to make the connection: 28
- 878893 640 & 650 Series 30
- ; for example: 32
- The 640e 36
- The 650e 36
- The use of a TR-2U 40
- ÖDaqX PnP Devices 41
- The 640u 42
- The 650u 42
- 6 43
- Introduction 43
- Analog Common 45
- Input Coupling 45
- What is Aliasing? 46
- Aliasing Protection 46
- Analog Triggers 47
- Using Accelerometers 48
- Low-Impedance Transducers 51
- Digital Inputs and Outputs 53
- CE Standards and Directives 55
- Safety Conditions 56
- Noise Considerations 58
- Product Care 59
- General 60
- 889093 640 & 650 Series 62
- Customer Support 63
- Software Options 10 65
- 888493 640 & 650 Series 66
- 67
- General Specifications 71
- Analog Specifications 71
- Tachometer Inputs 73
- : DB-9 female (figure) 74
- Input / Output Circuit 74
- -- removed 75
- 640u High Frequency Artifacts 79
- Analog Measurement Flatness 80
- Vin = -0.5dB FS 82
- Frequency (Hz) 83
- Phase Match (degrees) 83
- Figure XVII. 640 CMRR 84
- Figure XVIII. 650 CMRR 84
- FLatness (dB) 85
- 907493 Appendix A 88
- Before you run a test 91
- 907493 Appendix B 92
- Smart Sensors 93
- Networks 94
- System Architecture 95
- TEDS Composition 95
- 928693 Appendix C 96
- Glossary 97
- 907493 640 & 650 Series 100
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