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OrCAD DFM Checker的核心功能:
Hierarchical Rule-Set-Driven Analysis
The myriad of DFM checks and the overall analysis process can be easily managed by creating rules sets. Checks are organized into layer types and sub-categories to simplify the selection of checks to perform and the setting of corresponding parameters. De ne the type and order of a group of checks (rule set) to be performed. Analysis can include netlist or layer comparison, design rule veri cation, fabrication, and assembly checks on the entire design, a speci c layer. Analysis rule sets dramatically reduce set up and execution of the analysis and can be saved and recalled for use on any design. Rule sets can be de ned for a speci c PCB technology, vendor capability, or unique design requirement.
For many designs, different layers of a PCB have unique constraints and subsequently require custom analysis. Use unique rule hierarchy to tailor an analysis to bare-board construction, board density, or component technology.
PCB Fabrication Analysis
Fabrication analysis will detect speci c design content that may have an adverse effect on PCB fabrication. Features such as less-than-minimal spacing, acid traps, minimal annular rings, minimum features sizes, and copper and mask slivers are just
a few examples of the fabrication analysis available. Drill- related analysis includes minimal distances between drills, pads without drills, mill path errors, coincident or overlapping drills, and others.
PCB Assembly Analysis
Assembly analysis will detect speci c PCB content that may have an adverse effect on PCB assembly. Solder and paste mask features—such as less-than-minimal mask spacing, missing masks, extra mask, and minimal mask annular rings— are examples of mask analysis available. Silkscreen-related analysis includes ink over pads, ink over mask exposures, and other checks.
Error Charting
Large-scale analysis can often result in a large number of reported failures. Viewing the results of large-scale analysis in chart form allows you to get to the root of the failure and quickly ascertain a remedy. Charting allows you to review speci cs of the failures to identify trends or unexpected results. OrCAD DFM Checker’s charting feature (Figure 1) reports the exact nature of the error and the PCB features related to that error. The charting function groups common errors so they can be quickly identi ed and resolved.
Cross-Probing with OrCAD PCB Editor
OrCAD DFM Checker is tightly integrated with OrCAD PCB Editor, allowing designers to walk through errors. Selecting errors within OrCAD DFM Checker and zooming into the error location within OrCAD PCB Editor expedites the process of nding and correcting errors in the source PCB design.
1. 产品送达用户之日起 7 日内,出现“性能故障”,经由用户所购产品的生产厂家指定维修服务机构检测属实后,可以免费换货;
2.产品送达用户之日起,主机享有 12 个月保修服务,配件享有 6 个月保修服务。
1、若产品主机符合保修条件,根据保修卡与购机发票即可享受保修服务,若无法提供购买证明及保修卡,则以到货签收时间作为保修起算标准;
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4、需要维修或检测的产品,向用户所购产品的生产厂家指定维修服务机构送修或检测过程中发生的运输、发货和处置费用由用户承担;维修或检测产品寄还用户时产生的运费由用户所购产品的生产厂家承担(仅限中国大陆境内);
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6、产品在保修期内,维修中正常使用的零部件免费;
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10、本条款未尽事宜参考国家三包法律规定。
1、产品无购机发票和保修卡,亦不能在用户所购产品的生产厂家查询到相关的销售信息,且出库日期超过 12 个月;
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6、因不可抗力如地震、水灾、战争等原因造成的损坏;
7、其它不符合三包相关规定的情况。
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