Yokogawa Technical Report / No.40 (2005)

Yokogawa periodically publishes the Yokogawa Technical Report, which contains articles that take a detailed look at the technologies employed in Yokogawa's products. At this site you will find links to all of the reports that have been published since 1997 as well as links to PDF files containing the full text of selected articles from each issue.

abstract

DL9000 SERIES OF DIGITAL OSCILLOSCOPES

  • SUGIHARA Yoshinobu *1
  • TAKEZAWA Shigeru *1
  • KATOU Seiji *1
  • MORITA Kazunori *1

*1 Communications and Measurement Business Headquarters

We have developed the DL9000 series of digital oscilloscopes that features 4-channel input, a maximum frequency bandwidth of 1.5 GHz, a maximum sampling rate of 10 GS/s and a maximum recording length of 6.25 MWord. This series features the high performance functions of waveform display and analysis with a compact and lightweight design. As one of the significantly improved functions, this series employs an enhanced accumulation function capable of continuously and successively displaying overlaid historical waveforms, thereby enabling data acquisition and display processing at a maximum of 450-M sample points per second.


AQ7260 SERIES OF NEW OTDRS FOR FIBER-OPTIC INSTALLATION ...

  • SATO Yasushi *1
  • EMA Nobuaki *1
  • HARIMA Yousuke *1
  • SATO Naoto *1

*1 Communications and Measurement Business Headquarters

The Optical Time Domain Reflectometer (OTDR) is an instrument capable of detecting and measuring fiber-optic break points or splice points, as well as distancerelated data, in fiber-optic communication networks. In line with the recent spread of “Fiber to the Home” (FTTH) technology, there is a growing need to detect these break and splice points in short-distance networks with even greater accuracy. In order to meet this need, we have developed OTDRs with a maximum distance resolution of 5cm. Furthermore, as a new measurement application we will introduce live-line measurement technology using a 1650-nm wavelength, different from the 1310/1550nm working wavelengths used for communication lines.


AQ2200-136 COMPACT TUNABLE LASER SOURCE MODULE FOR WIDE ...

  • TANAKA Yasuhiro *1
  • MIYAKI Shosuke *1
  • TOYODA Seiji *1
  • TOMIDA Ichirou *1

*1 Communications and Measurement Business Headquarters

We have developed the AQ2200-136 compact tunable laser source module with a wide wavelength range of 200 nm (1440 to 1640 nm) and a maximum output power of +7 dBm or greater, as a plug-in module for the AQ2200 multi-application test system (MATS). When combined with the AQ2200 series of optical sensors or the AQ6317B/C/AQ6319 optical spectrum analyzer, the AQ2200-136 enables users to measure the wavelength-dependent loss (WDL) of an optical device without any personal computers. In this paper, we describe the features and structure of the AQ2200-136.


AP9945 AND AQ2200-601 10-GBIT/S COMPACT BIT ERROR RATE ...

  • DAIRI Kenji *1
  • TOOYAMA Akira *2
  • SUZUKI Kazuyuki *1
  • TSUTSUMI Seiichi *1
  • YANAGISAWA Yoshiki *1

*1 Communications and Measurement Business Headquarters
*2 Corporate Marketing Headquarters

With improvements in the speed and bandwidth of communication networks in recent years, 10-Gbit/s high-speed optical communications systems are becoming increasingly widespread in core networks, as well as access networks and LANs. Accordingly, devices and modules for use in 10-Gbit/s transmission are being actively developed, causing increasingly fierce price competition. Under these circumstances, the bit error rate testers (BERT) necessary to test these devices and modules are also facing a demand for lower prices. We have explored essential functionality and performance and examined product specifications, with a focus on application to the production of optical transceivers. Consequently, we have developed two compact and economical 10-Gbit/s BERTs, a plug-in module model and a portable model, featuring variable amplitudes, cross-points and voltage offsets for the data output and a built-in clock and data recovery (CDR) function.


VC200 SERIES OF MOBILE PHONE TESTERS FOR W-CDMA AND GSM ...

  • ISHIZU Tetsu *1
  • TODA Hideyuki *1
  • CHUUMA Hidehiro *1
  • KIMURA Tooru *1

*1 Communications and Measurement Business Headquarters

We have developed the VC200 series of mobile phone testers for both wideband-code division multiple access (W-CDMA) and global system for mobile communications (GSM) mobile phones. The VC200 series is a line of simplified testers, enabling users to test W-CDMA/GSM dual-mode terminals with just one tester, as well as test for both W-CDMA and GSM protocols at one time. Users can test mobile phones for signaling, voice calls, and radio characteristics using simple operations. The VC200 is thus suited for failure diagnoses at service shops or final inspections on production lines.


VB8300/VN7100 SIGNAL GENERATOR AND ANALYZER FOR WIDEBAND ...

  • KOYANAGI Nobuo *1
  • IWAOKA Mitsuru *1
  • YAZAWA Kenichi *1
  • YOKOHIRA Kanji *1

*1 Communications and Measurement Business Headquarters

We have developed the VB8300 VectorCreatorTM baseband signal generator and the VN7100 VectorExplorerTM wideband modulation analyzer, capable of generating or analyzing a wideband modulation signal required for the nextgeneration wireless communications market. The VB8300 features a maximum clock rate of 300 MS/s, a D/A resolution of 14 bits, a multichannel signal generation for up to 8 channels, an ultra long memory of up to 128 M points per channel, as well as sequence functions and noise and analog addition functions. The VN7100 features an 84-MHz to 6.2-GHz RF input frequency range, a maximum analysis bandwidth of 168 MHz, and an ultra long memory, thereby enabling various analyses including EVM analysis. This paper outlines both the VB8300 and VN7100 and their applications.


IP TRAFFIC LOAD GENERATOR/ANALYZER-AE5511 TRAFFIC TESTER ...

  • HIRAOKA Nobuyuki *1
  • FUKUDA Yoshinobu *1
  • KAWATE Kousuke *1
  • NAGASHIMA Shigeru *1

*1 Communications and Measurement Business Headquarters

The IP traffic load generator/analyzer is a measuring instrument used to test the performance of communications equipment, such as switches and routers configured as the nodes of an IP network, by generating IP data and receiving the data for analysis. In addition, the generator/analyzer is used to evaluate the performance of end-to-end transmissions or transmissions between relay points via a network made up of those pieces of equipment. Our company has developed the AE5511 Traffic Tester Pro, a measuring instrument equipped with various multi-port interface units and capable of flexibly meeting measurement needs in IP network testing. With the Windows-based graphical user interface (GUI) software, the AE5511 supports multi-user, multi-interface operating environments. This paper explains the basic configuration of the AE5511 Traffic Tester Pro, as well as approaches toward the testing of the quality of service (QoS) and the high-precision measurement of full wire rates.


IEC61508-COMPLIANT SAFETY SYSTEM

  • AKAI Hajime *1

*1 IA Systems Business Division, IA Business Headquarters

The ProSafe-RS Safety System has been developed in compliance with the IEC61508 international functional safety standard and has been certified by a thirdparty certification body as conforming to the standard. This international standard is based on risk management concepts and is widely accepted across the process industry for plant safety. In this article, we will discuss the main points of IEC61508, the concept of risk management and the standard's requirements for safety systems.


SAFETY SYSTEMS MARKET AND ITS TRENDS

  • ANDO Tadaaki *1

*1 IA Systems Business Division, IA Business Headquarters

There is a growing demand for energy on a global scale and the risk to industrial accidents is increasing. Consequently, the demand for safety systems is growing more and more. User requirements for safety systems have emerged not only from a safety point of view but also from the viewpoint of ease of use in close conjunction with other systems and system functions such as DCSs and operation and monitoring functions. These factors constitute the background to the development of the ProSafe-RS. In the light of the above background, this paper discusses the safety systems market and prospects for the future of safety systems.


AIMS AND FEATURES OF THE ProSafe-RS SAFETY SYSTEM

  • NISHIDA Jun *1
  • MATSUDA Toshihiko *1

*1 IA Systems Business Division, IA Business Headquarters

We have developed the ProSafe-RS, a safety system compatible with the SIL3 level of the IEC 61508 international standard. This product alone fulfills the requirements for safe instrumentation. In addition, it is highly compatible with our CENTUM CS 3000 process control system and offers a platform for flexible, comprehensive solutions to users who implement overall process plant designs. This paper outlines the aims and features of the ProSafe-RS.


SYSTEM GENERATION AND MAINTENANCE FUNCTIONS FOR THE ...

  • SATO Masahito *1
  • KUWATANI Motoichi *1

*1 IA Systems Business Division, IA Business Headquarters

We have developed system generation and maintenance functions for our ProSafe-RS safety system which forms the core of safety instrumented systems (SIS). The system generation function is designed to create application logic (logic solver) accurately and efficiently using IEC61131-3 (IEC standard)-compliant function block and ladder diagrams which are most commonly employed in the safety instrumentation area. The maintenance function has a “maintenance override” function which allows easy maintenance and inspection from the CENTUM CS 3000 HIS without affecting the safety functions of the ProSafe-RS. In addition, it accurately informs the operator of the status of safety controllers (SCS) when a fault is detected, annunciating device or process faults before they prove fatal. Furthermore, the maintenance function is systematized to promptly restore normal operation in case of a system failure or process shutdown.


SAFETY TECHNOLOGIES INCORPORATED IN THE SAFETY CONTROL ...

  • EMORI Toshiyuki *1
  • KAWAKAMI Shigehito *1

*1 IA Systems Business Division, IA Business Headquarters

We have developed the ProSafe-RS safety instrumented system, which has been certified by the TUV German certification organization as meeting Safety Integrity Level (SIL) 3 specified in IEC 61508, the international standard for functional safety. The Safety Control Station (SCS) is a safety controller that is a core component of the ProSafe-RS. This paper describes some of the technologies, including safety functions, protection against interference from non-safety functions, and safety communication, incorporated in the SCS to achieve SIL 3.


HARDWARE FEATURES OF THE ProSafe-RS

  • YAMASHIRO Yasuhiko *1
  • SEKINO Hiroyoshi *1
  • SHISHIBA Ryoutarou *1
  • KOBAYASHI Yoshinori *1

*1 IA Systems Business Division, IA Business Headquarters

The new hardware of our ProSafe-RS safety system offers single and dualredundant module configurations, both of which have achieved a safety integrity level (SIL) of 3. Based on the technological heritage and reliability of the CENTUM CS 3000, which has a proven track record in the hardware market, the ProSafe-RS is designed to meet all the safety design requirements of IEC61508, an international functional safety standard. The main feature of the newly developed ProSafe-RS hardware is the application of dual microprocessor technology, not only to the CPU module, but also to the I/O module. This feature affords an SIL 3 in a single configuration as well as in a dual-redundant configuration.


EJX SERIES OF IEC61508 SAFETY STANDARDCOMPLIANT ...

  • SONODA Kaoru *1

*1 Product Business Center, IA Business Division

Safe plant operation has long been a prime requirement for process automation in oil, gas, petrochemical, and other industries. Since it is an important mission for field device vendors to provide even safer products to customers, Yokogawa has been developing field devices with enhanced safety functions. Safety instrumented systems (SIS) constitute one systematic means for safe plant operation. The specifications of such systems have been incorporated into the IEC 61508 standard and the standard has been adopted by many plants. This paper introduces the new EJX series of TUV SIL2-approved pressure transmitters with SIS functionality.

 
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