all， 需要考虑供应商设备及贵司设备是否可以满足MSA的要求。 贵司的设备与供应商的 设备相比，哪家的重复性及再现性更好，哪家的测量值更接近于真值。 Billy lu 陆培良 Shanghai Meadville Science & Technology Co. Ltd. - Silicon Platform IC substrate Division A member of TTM Technologies Inc. Office Phone:+86 21 3774 7597 E.mail: [log in to unmask] http://www.meadville.com.hk This email (including any attachment) may contain privileged and/or confidential information and is intended only for use by the named addressee(s). If you are not the intended recipient, you must not disseminate, distribute, copy or make use of this email and any of its information. If you receive this email in error, please immediately contact the sender by reply email and delete permanently this email (including any copy) from your system and destroy any printout thereof. The sender and his/her employer (including its affiliates) shall not be liable for the improper or incomplete transmission of the information contained in this email or for any delay in its receipt or damage to your system. The sender and his/her employer (including its affiliates) do not guarantee the integrity of this email message and that this email message is free of viruses, interceptions or interference. "SAVE PAPER - THINK BEFORE YOU PRINT!" Lu Feng <[log in to unmask]> 发件人: TGAsia <[log in to unmask]> 2010-09-21 11:39 请答复 给 Asia Committe Task Group Forum <[log in to unmask]>; 请答复 给 [log in to unmask] 收件人 [log in to unmask] 抄送 主题 Re: [TGAsia] 阻抗测试问题 如果是在批量评估验货阶段.这是不合格的: 测试一般都是抽样测试.所以涉及到和供 应商商定验货标准,设计到统计分析的要求. 比如,批量的 CP, CPK,Mean,Stdev等. 这批测试数据,明显的Cp CPK很差. 均方偏差不大,但均值过低. 除非是100%全测验货,那么就需要使用统计标准验货. 不然不能保证 未测部分的品质 是否在要求内. sungaixian_007 <[log in to unmask]> Sent by: TGAsia <[log in to unmask]> 2010-09-21 10:04 Please respond to Asia Committe Task Group Forum <[log in to unmask]>; Please respond to sungaixian_007 <[log in to unmask]> To [log in to unmask] cc Subject [TGAsia] 阻抗测试问题 各位: 最近收一个供应商很有意思的话题.特向大家请教. 关于阻抗测试的结果的判定是选取单个测试条阻抗测试的平均值还是最大值与最小值 同标准进行判定? 例如: 阻抗要求为 100+/-10% (MIN 90,MAX110) 测试仪器显示某个零件测试结果是: MIN :88 ,MAX:99 平均值:93. IPC 标准或者是其他的规范有没有说明是 必须要 MIN 与MAX 都在公差范围内合格才 可以判定合格,还是可以直接用平均值来进行判定? 供应商说他的测试结果是符合要求的,因为平均值在要求范围之内? Sunny 全国最低价，天天在家冲照片，24小时发货上门！ ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ This message has been scanned by KAIFA AntiSPAM This message has been scanned by KAIFA AntiSPAM ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ ______________________________________________________________________ This email has been scanned by the MessageLabs Email Security System. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________