5.1 Personnel responsible for the creation, display, transfer or storage of digital nondestructive evaluation results will use this guide.5.2 Personnel responsible for the design and manufacture of NDT systems conforming to the DICONDE standard will use this guide.5.3 Personnel responsible for the purchase and implementation of NDT systems conforming to the DICONDE standard will use this guide.5.4 This guide will recommend courses of action for utilizing the DICONDE standard for the use cases described in 5.1, 5.2, and 5.3.1.1 The display, transfer and storage of digital nondestructive evaluation data in a common, open format is necessary for the effective interpretation and preservation of evaluation results. ASTM International has developed common open standards for Digital Imaging and Communication in Nondestructive Evaluation (DICONDE) based on the ubiquitous healthcare industry standard Digital Imaging and Communication in Medicine (DICOM). This guide provides an overview of the ASTM International standard practices that address DICONDE and assistance in identifying the correct standard practices for different use cases.1.2 This document provides an overview of how to utilize the ASTM DICONDE standard practices found in paragraph 2.1.2 on ASTM DICONDE Test Methods Standards for the display, transfer and storage of digital nondestructive test data1.3 This document provides an overview of how to utilize the DICOM standard found in paragraph 2.2 on Other Documents for the display, transfer and storage of digital nondestructive test data for test methods not explicitly addressed by a DICONDE standard practice but having an equivalent medical imaging modality.1.4 This document provides recommendations for the display, transfer and storage of nondestructive digital test data not addressed in 1.2 or 1.3.1.5 This document provides an overview of how to utilize the ASTM DICONDE standard practices found in paragraph 2.1.3 on ASTM DICONDE Interoperability Standards for validating a system that follows the ASTM DICONDE standard for the display, transfer and storage of digital nondestructive test data.1.6 This document provides an overview of how to utilize the ASTM DICONDE standard practices found in 2.1.3 for validating that two or more systems that follow the ASTM DICONDE standard for the transfer of digital nondestructive test data can successfully transfer data.1.7 This document provides an overview of how to utilize the ASTM DICONDE standard practices found in 2.1.3 for validating that two or more systems that follow the ASTM DICONDE standard for the display of digital nondestructive test data display data consistently.1.8 Although this guide contains no values that require units, it does describe methods to store and communicate data that do require units to be properly interpreted. The SI units required by this guide are to be regarded as standard. No other units of measurement are included in this guide.1.9 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.10 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 590元 / 折扣价： 502 元 加购物车

1.1 This provisional specification defines the Open Systems Interconnection (ISO7498 : 1984) Layer 2 data link layer for dedicated short-range communication (DSRC) equipment operating in half-duplex mode.1.1.1 This provisional specification defines the Data Link Layer irrespective of the physical medium to be used. However, it is expected that the standard will be used in accordance with a three layer stack as defined by Subcommittee E17.51 and IEEE P1455 and illustrated in . A critical implication of the use of the Data Link Layer standard with PS 111 is the assumption that the data rate will be 500 Kbps on both the uplink and downlink.1.1.2 This provisional specification specifies dedicated short range communications between fixed equipment at the roadside, called a beacon or Road Side Equipment (RSE) and Mobile Equipment in vehicles, called a Transponder or On-Board Equipment (OBE). This standard does not address vehicle-to-vehicle communication or communication between different instances of RSE.1.1.3 This provisional specification adheres to the general DSRC architecture in which the RSE controls the medium, allocating its use to OBEs within range of the RSE.1.1.4 This provisional specification supports a variety of RSE configurations. It supports configurations where one RSE communicates with one OBE, as well as configurations where one RSE can communicate with several OBEs. It does not define any specific configuration or layout of the communication zone.1.1.5 This provisional specification does not define to what extent different instances of RSE, operating in the vicinity of each other, need to be synchronised with each other.1.1.6 This provisional specification defines parameters to be used in negotiation procedures taking place between RSE and OBE.1.1.7 This provisional specification defines the following:Medium access control (MAC) procedures for the shared physical medium,Addressing rules and conventions,Data flow control procedures,Acknowledgement procedures,Error control procedures,Services provided to data link user(s), andFragmentation.1.1.8 There are two primary MAC modes, synchronous and asynchronous. Both modes support time-division multiple access half-duplex communications combined with a slotted aloha protocol for activation. The synchronous mode is characterized by a contiguous set of slots which is transmitted continuously and has fixed polling, data communications and activation phases. The asynchronous mode can vary the transmission of polling sequences, activation attempts or data communications.1.1.9 This provisional specification assumes that each RSE covers a limited part of the road (the communication zone) and that the OBE communicates with the RSE while passing through the communication zone.1.1.10 This provisional specification specifies the services required of the data link layer by the DSRC data link layer user, as viewed from the data link layer user, to allow a data link layer user entity to exchange packets with remote peer data link layer user entities. The services do not imply any particular implementation or any exposed interface.1.1.11 Not discussed in this provisional specification are signals that must be passed through the Data Link Layer from the Physical Layer to the Application Layer or vice versa in the OBE. These signals include indications of exceeding the wake-up threshold level (to control the OBE response in a small zone) and no carrier (to permit graceful shut down of the OBE if the OBE unexpectedly loses communications). It will be necessary to consider the implementation of these signals in OBE design.1.2 Overview1.2.1 All transmissions by either the RSE or OBE shall consist of a preamble and a frame. A preamble is an eight-bit sequence used for bit synchronization and is specified in Layer 1. A frame is a data link layer entity, which is the result of encapsulation of an application protocol data unit. The generic encapsulation process is shown in .1.2.2 An APDU is delivered from the application layer to the data link layer. If the APDU cannot be sent in a single transmission, then it is subdivided into multiple packets. Each packet is then converted into an LPDU by appending a byte count, fragmentation and logical link control and status field to the beginning of each packet. The frame is then formed by appending a link address field, and media access control field to the beginning and a error detection check field to the end of each LPDU. Each frame is then sent to the physical layer, which appends the preamble and then transmits the data.1.2.3 The frames can be transmitted in one of two modes: synchronous or asynchronous. In the synchronous mode, frames are transmitted in one of three types of slots: frame control message, message data or activation. The slots are combined to form a continuously repeated TDMA frame, as shown in . Each TDMA frame begins with a frame control message slot (FCMS). The FCMS only contains a frame control frame which is a broadcast message from the RSE indicating the number of slots, the type of each slot and the size of the slots that compose the rest of the TDMA frame. For example, in , the frame control frame defines a TDMA frame composed of three additional slots, two slots for data transmission and the other slot for activation. The message data slot (MDS) contains a data message frame transmitted over either the downlink to a specific OBE or uplink from a specific OBE. In addition, there is an acknowledgement transmitted immediately after the data message frame in the opposite direction. The activation slot (ACTS) consists of activation windows which are time periods when any OBE is allowed to transmit in contention with other OBEs in order to attempt to activate. It is not necessary to have an activation slot in a TDMA frame.1.2.4 Assuming link establishment requires the transmission of a beacon service table (BST) from the RSE and negotiation of link parameters using a vehicle service table (VST), provides an example of a full link negotiation followed by a read/write operation in synchronous mode. (Note that the full link negotiation can be shortened to reduce the number of TDMA frames needed to complete a transaction.) In TDMA Frame #1, the OBE receives a BST from the RSE and decides to activate. The activation is also transmitted in TDMA Frame #1. In TDMA Frame #2, the frame control frame designates a downlink message data slot to obtain the VST. After the OBE transmits the VST in TDMA Frame #2, the RSE commands the OBE to support a read in TDMA Frame #3. In TDMA Frame #4, the frame control frame designates an uplink message data slot to read the data. In TDMA Frame #5, the frame control frame designates a downlink message data slot to write data to the OBE. A corresponding acknowledgement is transmitted by the OBE.1.2.5 In the asynchronous mode, communications with an OBE is always initiated with a frame control frame which is regularly broadcast by the RSE. Immediately following the frame control frame are a series of activation windows. The timing and structure of the frame control frame and activation windows can be made common to both synchronous and asynchronous operations (to minimize the differences between the two modes). It is expected that the frame control frame and the activation windows will be transmitted (or time allocated) periodically so that the RSE can poll its read zone for OBEs. When an OBE successfully activates, the RSE discontinues transmissions of the frame control frame to establish private communications with the OBE. These communications can occur asynchronously, that is, without a TDMA frame dividing time into slots. In addition, the specific sequence of frames transmitted is dependent entirely on the application layer. Once the private communications is completed, the RSE would then continue to poll using the frame control frame and activation windows. Note that opportunities to transmit on the downlink and uplink in the asynchronous mode are defined by windows which provide constraints on the start and end times for any frame transmissions. An activation window is a special case of an uplink window.1.2.6 As above, assuming link establishment requires the transmission of a beacon service table (BST) from the RSE and negotiation of link parameters using a vehicle service table (VST), provides an example of a typical read/write operation in asynchronous operation.1.2.7 Like the synchronous mode, the OBE receives the BST from the RSE and attempts to activate. The activation frame is transmitted in activation windows that immediately follow the frame control frame. Once the activation is established, the RSE commands the OBE to transmit a VST and allocates an uplink window for the OBE to transmit the VST. After the VST is received, the RSE commands the OBE to support a read and allocates an uplink window for the OBE to transmit the read response. The OBE transmits the data. Then, the RSE writes data to the OBE and receives a reply that the write was successfully completed.Note 1Provisional Standards require only subcommittee consensus and are published for a limited time of two years. The provisional process was used because it is anticipated that the United States Department of Transportation will be referring to this provisional specification in their rule making.

定价： 0元 / 折扣价： 0 元

5.1 Personnel that are responsible for the creation, transfer, and storage of eddy current NDE test results will use this standard. This practice defines a set of information modules that, along with Practice E2339 and the DICOM standard, provide a standard means to organize eddy current test parameters and results. The eddy current examination results may be displayed or analyzed on any device that conforms to the standard. Personnel wishing to view any eddy current examination data stored according to Practice E2339 may use this document to help them decode and display the data contained in the DICONDE compliant inspection record.1.1 This practice covers the interoperability of eddy current imaging and data acquisition equipment by specifying the image data transfer and archival storage in commonly accepted terms. This document is intended to be used in conjunction with Practice E2339 on Digital Imaging and Communication in Nondestructive Evaluation (DICONDE). Practice E2339 defines an industrial adaptation of NEMA PS3 / ISO 12052, an international standard for image data acquisition, review, storage, and archival storage. The goal of Practice E2339, commonly referred to as DICONDE, is to provide a standard that facilitates the display and analysis of NDE results on any system conforming to the DICONDE standard. Toward that end, Practice E2339 provides a data dictionary and a set of information modules that are applicable to all NDE modalities. This practice supplements Practice E2339 by providing information object definitions, information modules, and a data dictionary that are specific to eddy current test methods.1.2 This practice has been developed to overcome the issues that arise when analyzing or archiving data from eddy current test equipment using proprietary data transfer and storage methods. As digital technologies evolve, data must remain decipherable through the use of open, industry-wide methods for data transfer and archival storage. This practice defines a method where all the eddy current technique parameters and inspection data are communicated and stored in a standard manner regardless of changes in digital technology.1.3 This practice does not specify:1.3.1 A testing or validation procedure to assess an implementation's conformance to the standard,1.3.2 The implementation details of any features of the standard on a device claiming conformance, or1.3.3 The overall set of features and functions to be expected from a system implemented by integrating a group of devices each claiming DICONDE conformance.1.4 Units—Although this practice contains no values that require units, it does describe methods to store and communicate data that do require units to be properly interpreted. The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 646元 / 折扣价： 550 元 加购物车

5.1 Personnel that are responsible for the transfer of NDE data between systems will use this standard. This practice will define a set of NDE information object definitions that along with the DICOM standard will provide a standard means to organize image data. Once conformance statements have been generated, the NDE image data may be displayed on any imaging/analysis device that conforms to the standard. This process of developing conformance statements with both the NDE specific object definitions and the DICOM accepted definitions, will provide a means to automatically and transparently communicate between compliant equipment without loss of information.NOTE 1: Knowledge and understanding of the existing DICOM standard will be required to generate conformance statements and thereby facilitate the data transfer.1.1 This practice facilitates the interoperability of NDE imaging and data acquisition equipment by specifying the image data in commonly accepted terms. This practice represents a harmonization of NDE imaging systems, or modalities, with the NEMA Standards Publication titled Digital Imaging and Communications in Medicine (DICOM, see http://medical.nema.org), an international standard for image data acquisition, review, storage and archival. In addition, this practice will provide a standard set of industrial NDE specific information object definitions, which travel beyond the scope of standard DICOM modalities. The goal of this practice is to provide a standard by which NDE image/signal data may be displayed on by any system conforming to the ASTM DICONDE format, regardless of which NDE modality was used to acquire the data.1.2 This practice has been developed to overcome the issues that arise when archiving or analyzing the data from a variety of NDE techniques, each using proprietary data acquisition systems. As data acquisition modalities evolve, data acquired in the past must remain decipherable. This practice proposes an image data file format in such a way that all the technique parameters, along with the image file, are preserved, regardless of changes in NDE technology. This practice will also permit the viewing of a variety of image types (CT, CR, Ultrasonic, Infrared, and Eddy Current) on a single workstation, maintaining all of the pertinent technique parameters along with the image file. This practice addresses the exchange of digital information between NDE imaging equipment.1.3 This practice does not specify:1.3.1 A complete description of all the information necessary to implement the DICONDE standard for an imaging modality. This document must be used in conjunction with one of the method-specific DICONDE Standard Practice documents and the DICOM Standard to completely describe all the requirements necessary to implement the DICONDE standard for an imaging modality. See 2.1 of this document for a current list of the method-specific standard practice documents.1.3.2 A testing or validation procedure to assess an implementation's conformance to the standard. Best practices for demonstrating conformance can be found in Practice E3147.1.3.3 The implementation details of any features of the standard on a device claiming conformance.1.3.4 The overall set of features and functions to be expected from a system implemented by integrating a group of devices each claiming DICONDE or DICOM conformance.1.4 Units—Although this practice contains no values that require units, it does describe methods to store and communicate data that do require units to be properly interpreted. The SI units required by this practice are to be regarded as standard. No other units of measurement are included in this standard.1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 646元 / 折扣价： 550 元 加购物车

The practice should be adopted by spectrometer manufacturers and developers of software to be used on host computers to communicate with such instruments.1.1 This practice provides a standard communications protocol for a serial communication between a host computer and a spectrometer designed for colorimetry. The adoption of the standard communication protocol on the part of instrument manufacturers will allow instrument users the option to employ third-party software, or to replace one instrument with another while retaining the same software. This standard is not intended to replace existing standards, such as SCPI-1999 written by the SCPI Consortium as a set of Standard Commands for Programmable Instruments for bench-top instruments that utilize the IEEE-488 or IEEE-488.2 interface. This standard has been adopted by many analytical instrument makers and is used by them as the interface standard for spectroscopy even when the instrument interface is RS-232c.1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

定价： 0元 / 折扣价： 0 元

5.1 A main purpose of using robots in emergency response operations is to enhance the safety and effectiveness of emergency responders operating in hazardous or inaccessible environments. The testing results of the candidate robot shall describe, in a statistically significant way, how reliably the robot is able to perform the specified types of tasks and thus provide emergency responders sufficiently high levels of confidence to determine the applicability of the robot.5.2 This test method addresses robot performance requirements expressed by emergency responders and representatives from other interested organizations. The performance data captured within this test method are indicative of the testing robot’s capabilities. Having available a roster of successfully tested robots with associated capabilities data to guide procurement and deployment decisions for emergency responders is consistent with the guideline of “Governments at all levels have a responsibility to develop detailed, robust, all-hazards response plans” as stated in National Response Framework.5.3 This test method is part of a test suite and is intended to provide a capability baseline for the robotic communications systems based on the identified needs of the emergency response community. Adequate testing performance will not ensure successful operation in all emergency response environments due to possible extreme communications difficulties. Rather, this standard is intended to provide a common comparison that can aid in choosing appropriate systems. This standard is also intended to encourage development of improved and innovative communications systems for use on emergency response robots.5.4 The standard apparatus is specified to be easily fabricated to facilitate self-evaluation by robot developers and provide practice tasks for emergency responders to exercise robot actuators, sensors, and operator interfaces. The standard apparatus can also be used to support operator training to establish operator proficiency.5.5 Although the test method was developed first for emergency response robots, it may be applicable to other operational domains, such as law enforcement and armed services.1.1 Purpose: 1.1.1 The purpose of this test method, as a part of a suite of radio communication test methods, is to quantitatively evaluate a teleoperated robot’s (see Terminology E2521) capability to perform maneuvering and inspection tasks in a non-line-of-sight environment.1.1.2 Robots shall possess a certain set of radio communication capabilities, including performing maneuvering and inspection tasks in a non-line-of-sight environment, to suit critical operations for emergency responses. The capability for a robot to perform these types of tasks in obstructed areas down range is critical for emergency response operations. This test method specifies a standard set of apparatuses, procedures, and metrics to evaluate the robot/operator capabilities for performing these tasks.1.1.3 Emergency response robots shall be able to operate remotely using the equipped radios in line-of-sight environments, in non-line-of-sight environments, and for signal penetration through such impediments as buildings, rubbles, and tunnels. Additional capabilities include operating in the presence of electromagnetic interference and providing link security and data logging. Standard test methods are required to evaluate whether candidate robots meet these requirements.1.1.4 ASTM E54.08.01 Task Group on Robotics specifies a radio communication test suite, which consists of a set of test methods for evaluating these communication capabilities. This non-line-of-sight range test method is a part of the radio communication test suite. The apparatuses associated with the test methods challenge specific robot capabilities in repeatable ways to facilitate comparison of different robot models as well as particular configurations of similar robot models.1.1.5 This test method establishes procedures, apparatuses, and metrics for specifying and testing the capability of radio (wireless) links used between the operator station and the testing robot in a non-line-of-sight environment. These links include the command and control channel(s) and video, audio, and other sensor data telemetry.1.1.6 This test method is intended to apply to ground based robotic systems and small unmanned aerial systems (sUAS) capable of hovering to perform maneuvering and inspection tasks down range for emergency response applications.1.1.7 This test method specifies an apparatus that is, first of all, an essentially clear radio frequency channel for testing. In addition, a standard line-of-sight barrier between the testing operator control unit (OCU) and the robot is specified. Fig. 1 provides an illustration.FIG. 1 Test Fabrication at An Air StripLeft: The non-line-of-sight range test method uses an airstrip or flat, paved road with robot test stations placed in front of and behind a wall constructed of stacked 12 m (40 ft) International Standards Organization (ISO) shipping containers. Right: Robot test stations are prototyped behind the wall with targets on the barrels for visual inspection tasks and circular paths for maneuvering tasks.NOTE 1: Frequency coordination and interoperability are not addressed in this standard. These issues should be resolved by the affected agencies (Fire, Police, and Urban Search and Rescue) and written into Standard Operating Procedures (SOPs) that guide the responses to emergency situations.1.1.8 The radio communication test suite quantifies elemental radio communication capabilities necessary for robots intended for emergency response applications. As such, based on their particular capability requirements, users of this test suite can select only the applicable test methods and can individually weight particular test methods or particular metrics within a test method. The testing results should collectively represent an emergency response robot’s overall radio communication capability. These test results can be used to guide procurement specifications and acceptance testing for robots intended for emergency response applications.NOTE 2: As robotic systems are more widely applied, emergency responders might identify additional or advanced robotic radio communication capability requirements to help them respond to emergency situations. They might also desire to use robots with higher levels of autonomy, beyond teleoperate onto help reduce their workload—see NIST Special Publication 1011-II-1.0. Further, emergency responders in expanded emergency response domains might also desire to apply robotic technologies to their situations, a source for new sets of requirements. As a result, additional standards within the suite would be developed. This standard is, nevertheless, standalone and complete.1.2 Performing Location—This test method shall be performed in a testing laboratory or the field where the specified apparatus and environmental conditions are implemented.1.3 Units—The values stated in SI units shall be the standard. The values given in parentheses are not precise mathematical conversions to inch-pound units. They are close approximate equivalents for the purpose of specifying material dimensions or quantities that are readily available to avoid excessive fabrication costs of test apparatuses while maintaining repeatability and reproducibility of the test method results. These values given in parentheses facilitate testing but are not considered standard.1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 777元 / 折扣价： 661 元 加购物车

定价： 0元 / 折扣价： 0 元

5.1 Personnel that are responsible for the creation, transfer, and storage of ultrasonic test results will use this standard. This practice defines a set of information modules that, along with Practice E2339 and the DICOM standard, provides a standard means to organize ultrasonic test parameters and results. The ultrasonic test results may be displayed and analyzed on any device that conforms to this standard. Personnel wishing to view any ultrasonic inspection data stored in DICONDE format may use this document to help them decode and display the data contained in the DICONDE compliant inspection record.1.1 This practice covers the interoperability of ultrasonic imaging equipment by specifying image data transfer and archival storage methods in commonly accepted terms. This document is intended to be used in conjunction with Practice E2339. Practice E2339 defines an industrial adaptation of NEMA PS3 / ISO 12052 (DICOM, see http://medical.nema.org), an international standard for image data acquisition, review, transfer, and archival storage. The goal of Practice E2339, commonly referred to as DICONDE, is to provide a standard that facilitates the display and analysis of NDE test results on any system conforming to the DICONDE standard. Toward that end, Practice E2339 provides a data dictionary and set of information modules that are applicable to all NDE modalities. This practice supplements Practice E2339 by providing information object definitions, information modules, and data dictionary that are specific to ultrasonic test methods.1.2 This practice has been developed to overcome the issues that arise when analyzing or archiving data from ultrasonic test equipment using proprietary data transfer and storage methods. As digital technologies evolve, data must remain decipherable through the use of open, industry-wide methods for data transfer and archival storage. This practice defines a method where all the ultrasonic technique parameters and test results are communicated and stored in a standard format regardless of changes in digital technology.1.3 This practice does not specify:1.3.1 A testing or validation procedure to assess an implementation's conformance to the standard.1.3.2 The implementation details of any features of the standard on a device claiming conformance.1.3.3 The overall set of features and functions to be expected from a system implemented by integrating a group of devices each claiming DICONDE conformance.1.4 Although this practice contains no values that require units, it does describe methods to store and communicate data that do require units to be properly interpreted. The SI units required by this practice are to be regarded as standard. No other units of measurement are included in this standard.1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 590元 / 折扣价： 502 元 加购物车

4.1 This guide is intended to provide an understanding of the wide range of communication protocols standards, allowing the user to understand better their applicability to shipboard networks and marine platform computerized systems. For computerized networks and systems, communication protocols are necessary for integrating various system devices, providing functionality between dissimilar subnetworks, or for enabling remote connections, either pier side or through geophysical communication technologies.4.2 The wide variety and scope of digital communication protocol standards adds greatly to the complex decision process for specifying compatible protocols for system applications and related devices for the myriad of potential shipboard systems. However, the user must identify the initial networking requirements, so once the network protocols under evaluation are well understood, the decision process should determine the appropriate network protocols. Therefore, this guide is intended to reduce the complexity involved with protocol selection and implementation.4.3 Network protocols define an agreed, quantifiable entity, or set of rules, by which user computers, system networks, and internetworking devices communicate and exchange information. Communication protocols specify essential networking guidelines, such as physical interface connections, or data format and control operations between two communicating computers. Ship and marine digital communication protocol requirements are no different than their land-based networked counterparts. Both require standardized protocol selection, in various protocol categories, including LAN standards, WAN protocols, LAN/WAN protocols, network management, wiring hub configurations/operations, hardware platforms, operating systems, and network applications.1.1 The principal content of this guide provides a road map to implement a communication network applicable to ship and marine computer systems by:1.1.1 Examining the relationship of digital communication protocols as a network technological infrastructure,1.1.2 Outlining the basic building blocks of network topologies and transmission techniques associated with the implementation of transmission media in a network environment; and,1.1.3 Identifying operating system and environments.1.2 Using the Open System Interconnection (OSI) model, which provides a layered approach to network functionality and evaluation, common network communications protocols are identified and characterized in this guide according to lower and upper layer protocols corresponding to their degree and type of functionality.1.3 Although it is desirable that network users, designers, and administrators recognize and understand every possible networking protocol, it is not possible to know the intimate details of every protocol specification. Accordingly, this guide is not intended to address fully every hardware and software protocol ever developed for commercial use, which spans a period of about 25 years. Instead, the user of this guide will be introduced to a brief overview of the majority of past and present protocols which may comprise a ship or marine internetwork, to include Local Area Networks (LANs), Wide Area Networks (WANs), and related hardware and software that provide such network interoperability and data transfer.1.4 While this guide provides an understanding of the wide range of communication protocols, the user is recommended to consult the reference material for acquiring a more comprehensive understanding of individual communication protocols. However, by examining the basic functions of protocols and reviewing the protocol characterization criteria identified in this guide, the user will be more apt to understanding other protocols not mentioned or addressed herein.1.5 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 646元 / 折扣价： 550 元 加购物车

4.1 Because of the many unique requirements of permit-required confined space rescue operations and the specific construction and composition of some confined spaces, hardline communications systems may be the only type that will meet the requirements for working within these spaces. Some of these requirements are set forth in Federal Regulation and some by safe operating procedures developed for working in confined spaces by industry.4.2 This guide is not meant to preclude the use of other types of communication systems in confined-space rescue.1.1 This guide covers recommended criteria for the selection of hardwire communication systems for use in permit-required confined-space rescue operations.1.2 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 515元 / 折扣价： 438 元 加购物车

5.1 5.1 This guide is intended to assist and provide recommendations for an end-user of NDE imaging systems by providing an introduction to the basic principles of DICONDE for the control and maintenance of electronic NDE data. This guide is not intended to control the acceptability of the materials or components examined.5.2 Recommended End-users: 5.2.1 Personnel responsible for the creation, display, transfer, or storage of digital nondestructive evaluation results will use this guide.5.2.2 Personnel responsible for the purchase and implementation of NDT systems conforming to the DICONDE standard will use this guide.1.1 The display, transfer, and storage of digital nondestructive evaluation data in a common, open format is necessary for the effective interpretation and preservation of evaluation results. ASTM International has developed common open standards for Digital Imaging and Communication in Nondestructive Evaluation (DICONDE) based on the ubiquitous healthcare industry standard Digital Imaging and Communication in Medicine (DICOM). This guide provides an overview of DICONDE data archiving considerations and building information models for the efficient storing and locating of such data.1.2 This guide provides an overview of how to manage ASTM DICONDE data from standard practices found in 2.2 for the display, transfer, and storage of digital nondestructive test data.1.3 This guide provides an overview of how to utilize the DICOM standard found in 2.4 for the display, transfer, and storage of digital nondestructive test data for test methods not explicitly addressed by a DICONDE standard practice but having an equivalent medical imaging modality.1.4 This guide provides recommendations for the storage of nondestructive digital test data not addressed in 1.2 or 1.3.1.5 Units—Although this guide contains no values that require units, it does describe methods to store and communicate data that do require units to be properly interpreted. The SI units required by this guide are to be regarded as standard. No other units of measurement are included in this guide.1.6 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.7 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 646元 / 折扣价： 550 元 加购物车

5.1 Personnel that are responsible for the creation, transfer, and storage of digital X-ray test results will use this standard. This practice defines a set of information modules that, along with Practice E2339 and the DICOM standard, provides a standard means to organize digital X-ray test parameters and results. The digital X-ray test results may be displayed and analyzed on any device that conforms to this standard. Personnel wishing to view any digital X-ray inspection data stored according to Practice E2339 may use this document to help them decode and display the data contained in the DICONDE-compliant inspection record.1.1 This practice covers the interoperability of digital X-ray imaging equipment using Digital Detector Arrays (DDA) as described in Practice E2698 by specifying image data transfer and archival methods in commonly accepted terms. A separate practice, Practice E2738, addresses this topic for digital X-ray imaging equipment using Computed Radiography (CR). This document is intended to be used in conjunction with Practice E2339 on Digital Imaging and Communication in Nondestructive Evaluation (DICONDE). Practice E2339 defines an industrial adaptation of DICOM NEMA PS3 / ISO 12052 (DICOM, see http://medical.nema.org), an international standard for image data acquisition, review, storage, and archival storage. The goal of Practice E2339, commonly referred to as DICONDE, is to provide a standard that facilitates the display and analysis of NDE results on any system conforming to the DICONDE standard. Toward that end, Practice E2339 provides a data dictionary and a set of information modules that are applicable to all NDE modalities. This practice supplements Practice E2339 by providing information object definitions, information modules, and a data dictionary that are specific to digital X-ray test methods.1.2 This practice has been developed to overcome the issues that arise when analyzing or archiving data from digital X-ray test equipment using proprietary data transfer and storage methods. As digital technologies evolve, data must remain decipherable through the use of open, industry-wide methods for data transfer and archival storage. This practice defines a method where all the digital X-ray technique parameters and test results are communicated and stored in a standard manner regardless of changes in digital technology.1.3 This practice does not specify:1.3.1 A testing or validation procedure to assess an implementation's conformance to the standard.1.3.2 The implementation details of any features of the standard on a device claiming conformance.1.3.3 The overall set of features and functions to be expected from a system implemented by integrating a group of devices each claiming DICONDE conformance.1.4 Units—Although this practice contains no values that require units, it does describe methods to store and communicate data that do require units to be properly interpreted. The SI units required by this practice are to be regarded as standard. No other units of measurement are included in this standard.1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 590元 / 折扣价： 502 元 加购物车

5.1 Personnel that are responsible for the creation, transfer, and storage of computed radiography NDE data will use this practice. This practice will define a set of information modules that along with the Practice E2339 and the DICOM standard will provide a standard means to organize CR inspection data. The CR inspection data may be displayed and analyzed on any device that conforms to the standard. Personnel wishing to view any CR inspection data stored in accordance with Practice E2339 may use this practice to help them decode and display the data contained in the DICONDE compliant inspection record.1.1 This practice covers the interoperability of computed radiography (CR) imaging and data acquisition equipment by specifying image data transfer and archival storage methods in commonly accepted terms. This practice is intended to be used in conjunction with Practice E2339 on Digital Imaging and Communication in Nondestructive Evaluation (DICONDE). Practice E2339 defines an industrial adaptation of NEMA PS3 / ISO 12052 (DICOM, see http://medical.nema.org), an international standard for image data acquisition, review, storage, and archival storage. The goal of Practice E2339, commonly referred to as DICONDE, is to provide a standard that facilitates the display and analysis of NDE results on any system conforming to the DICONDE standard. Toward that end, Practice E2339 provides a data dictionary and a set of information modules that are applicable to all NDE modalities. This practice supplements Practice E2339 by providing information object definitions, information modules and a data dictionary that are specific to computed radiography test methods.1.2 This practice has been developed to overcome the issues that arise when analyzing or archiving data from CR test equipment using proprietary data transfer and storage methods. As digital technologies evolve, data must remain decipherable through the use of open, industry-wide methods for data transfer and archival storage. This practice defines a method where all standard CR technique parameters and test results are communicated and stored in a standard manner regardless of changes in digital technology.1.3 This practice does not specify:1.3.1 A testing or validation procedure to assess an implementation's conformance to the standard.1.3.2 The implementation details of any features of the standard on a device claiming conformance.1.3.3 The overall set of features and functions to be expected from a system implemented by integrating a group of devices each claiming DICONDE conformance.1.4 Although this practice contains no values that require units, it does describe methods to store and communicate data that do require units to be properly interpreted. The SI units required by this practice are to be regarded as standard. No other units of measurement are included in this practice.1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 590元 / 折扣价： 502 元 加购物车

4.1 The procedures recommended in this guide can be used by a panel leader to provide assessors and panels feedback: (1) on their data-based performance, (2) on any behavior changes that are needed to improve their performance, and (3) to motivate assessors to remain engaged with the panel tasks. The aim of all these types of feedback is to ensure the generation of repeatable and valid data.4.2 This guide provides direction for how to achieve mutually beneficial feedback exchanges between assessors and panel leaders.1.1 This guide provides guidance to sensory panel leaders on how to deliver performance feedback to trained sensory assessors and panels. This guide is not intended to be used by individual assessors or anyone unfamiliar with the panel.1.2 This guide covers recommended feedback given throughout assessor training, panel development, and ongoing assessor and panel monitoring.1.3 This guide examines aspects of feedback including: types, when to provide, effective delivery, and alignment to performance expectations for assessors.1.4 Descriptive, discrimination, and quality panels are within the scope of this guide.1.5 This guide does not cover consumer panels (qualitative or quantitative).1.6 Units—The values stated in SI units are to be regarded as the standard. No other units of measurement are included in this standard.1.7 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use.1.8 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.

定价： 646元 / 折扣价： 550 元 加购物车

This specification covers dedicated short range communication (DSRC) physical layer using microwave in the 902 to 928 MHz band, it defines the open systems interconnection (OSI) layer 1, physical layer, for dedicated short-range communications equipment, operating in two-way, half-duplex, active and backscatter modes. The relevant downlink physical layer or OSI layer 1 parameters and the relevant uplink DSCR layer 1 parameters are presented in details. The interface parameters to DSCR data link layer are also presented.1.1 Purposes1.1.1 This specification defines the Open Systems Interconnection (OSI) layer 1, physical layer, for dedicated short-range communications (DSRC) equipment, operating in two-way, half-duplex, active and backscatter modes.1.1.2 This specification establishes a common framework for the physical layer in the 902 to 928 MHz LMS band. This band is allocated for DSRC applications by the FCC in Title 47, Code of Federal Regulations (CFR), Part 90, Subpart M and by Industry Canada in the Spectrum Management, Radio Standard Specification, Location and Monitoring Service (902-928 MHz), RSS-137.1.1.3 This specification defines an air interface for both wide-area (multi-lane, open road) and lane-based applications that enables accurate and valid message delivery between moving vehicles randomly entering a communications zone and fixed roadside communication equipment. This air interface also enables accurate and valid message delivery between moving or stationary vehicles and fixed or portable roadside communication equipment.1.1.4 This specification does not include associated measurement guidelines for verification of the formulated requirements in this specification. It is intended that readers will be able to refer to the ASTM standard on Technical Characteristics and Test Methods for Data Transmission Equipment Operating in the 902 to 928 MHz LMS Band for the measurement guidelines, when it is developed.1.1.5 This specification does not consider any one specific ITS application, but rather describes a communication means to be used by several ITS applications. This specification also may be used for any non-roadway environment that can utilize this type of dedicated short-range radio communication.1.1.6 While this specification defines frequencies and power levels that are compatible with the North American regulatory requirements, the technical methodology used in their selection can be utilized in other regions of the world.1.2 Equipment1.2.1 The DSRC equipment is composed of two principle components: road-side equipment (RSE) and on-board equipment (OBE) or transponder.1.2.2 The RSE controls the protocol, schedules the activation of the OBE, reads from or writes to the OBE, and assures message delivery and validity. It is intended for, but not restricted to, installation at a fixed location on the roadway.1.2.3 The OBE communicates with the RSE and is intended for, but not restricted to, installation in or on a motor vehicle.1.2.4 The RSE must be capable of communicating with closely spaced OBE in the same lane or closely spaced OBE in adjacent lanes.1.2.5 This specification provides requirements for the communication medium to be used for exchange of information between RSE and OBE. Active, backscatter, and dual-mode technologies are described.1.3 Structure1.3.1 This specification defines an open (non-proprietary) architecture using the simplified OSI seven-layer reference model (per ISO 7498). The following sub-section describe the relationships of the OSI layers that support DSRC.1.3.1.1 The physical layer (Layer 1) is defined as a half-duplex radio frequency medium, in the 902 to 928 MHz band. Layer 1 interfaces with Layer 2.1.3.1.2 The data link control layer (Layer 2) defines a Time Division Multiple Access (TDMA) messaging protocol in which both the downlink and uplink are completely controlled by the RSE. The data link control layer provides a mechanism to ensure reliable completion of each transaction in the communications zone. This layer includes data organization, sequence control, flow control, error detection and error recovery among other functions. Layer 2 interfaces with Layer 7.1.3.1.3 The application layer (Layer 7) defines specific functions and message formats to support ITS and other services. Implicit or pre-set message formats may be used. Data encryption, data certification, and manual OBE and RSE authentication may be performed.1.3.1.4 The functions of the network layer (Layer 3), transport layer (Layer 4), session layer (Layer 5), and presentation layer (Layer 6) are included where necessary in Layer 2 or Layer 7.1.3.2 The physical layer communications requirements for the signals sent from the RSE in the OBE are accounted for as downlink parameters. The requirements associated with the signals sent from the OBE to the RSE are accounted for as uplink parameters.1.3.3 Physical layer requirements related to the interface to other DSRC communications layers are accounted for in .1.4 The values stated in SI units are to be regarded as the standard.

定价： 0元 / 折扣价： 0 元