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<p>故障描述：<span style="line-height: 1.6;">机器不能扫描，机器报Axial scan and OGP Event Error：</span></p><p>Error Logs：20-1001-27, DAS Trigger Many or 20-1001-26 DAS Trigger Less</p><p><br /></p><p>解决步骤：<span style="line-height: 1.6;">做offline scan , Axial scan, Scan time 0.7s or 1.0s Rotor off, collection on, No. Of Scan ：50, 其它选项随意，没有发现报错。</span></p><p>于是将No. Of Scan 设定为200，没有发现报错，紧接再扫200次，当还剩余50多次的时候，机器报错：</p><p>Axial Scan Error: </p><p>20-1001-27, DAS Trigger Many, DAS trigger of one rotation, between G-Pulse2, is over specification</p><p>on Axial Scan；（有时候是20-1001-26 DAS Trigger Less）</p><p>OGP Event Error:</p><p>20-1030-02, DAS Trigger was out of specification during scan. Or no DAS Trigger was detected after GANTINREQ.</p><p>OGP 上error LED亮起，但是还是让继续扫描的。</p><p>? 清洁slip ring & clean the Brush Block，做offline scan，当扫描次数在200-300左右时，仍有同样的报错。</p><p>? 测量碳刷阻值，没有异常。</p><p>? 再做offline scan，用Stationary scan，Scan time 0.7s or 1.0s, Rotor off, collection on, No. Of Scan ：400，当扫描次数在200-300左右时，报错如下：</p><p> Axial Scan Error: </p><p>20-1001-37, DAS Trigger Many，DAS trigger, generated and measured by internal timer of OGP is over specification on Stationary Scan；（有时候是20-1001-36 DAS Trigger Less）</p><p> OGP Event Error:</p><p>20-1030-02, DAS Trigger was out of specification during scan. Or no DAS Trigger was detected after GANTINREQ.</p><p>虽然OGP 上error LED亮起，还是让继续扫描的，但是再连续扫描个200-300次，又会出现上面的报错。</p><p>? By pass slip ring，将TGP到Brush Block的2176271信号线与OGP到slip ring背面的2241225信号线直接连接起来做Stationary scan，现象一样。</p><p>? 做Rotation Speed Adjustment, 报错现象无变化。</p><p>? Check and reset TGP与OGP, OGP与CIF 相互之间的communication cables, 线路良好。 </p><p>? Check DAS Power Supply, 电路稳定。</p><p>? Replace OGP BD，现象一样，Replace CIF BD，仍然有报错。</p><p>? 由于每次报错都在大量扫描之后，感觉很蹊跷，于是到另一台UNIX Prospeed EII的机器上做实验，用同样的参数做offline scan，用Stationary scan，Scan time 1.5s, Rotor off, collection on, No. Of Scan ：500, 当做到400多次的时候发现有同样的报错出现</p><p>结果：通过实验得出结论：当在连续大数量扫描的时候OGP会报错DAS Trigger Less 或者DAS Trigger Many,这是一个Bug。</p><p><br /></p>
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发表于 2020-10-21 11:52:15