E4809-032-217现货
OKUMA SW-OSP PC-1611-0. INR- BOARD
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E4809-032-218
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OKUMA SW-OSP PC-1612-D. DATA- BOARD
三.功能与参数测试
1.<测试仪>对器件的检测,仅能反应出截止区,放大区和饱和区.但不
能测出工作频率的高低和速度的快慢等具体数值等.
2.同理对TTL数字芯片而言,也只能知道有高低电平的输出变化.而无
法查出它的上升与下降沿的速度.
四.晶体振荡器
1.通常只能用示波器(晶振需加电)或频率计测试,万用表等无法测量,
否则只能采用代换法了.
2.晶振常见故障有:a.内部漏电,b.内部开路c.变质频偏d.外围相连电
容漏电.这里漏电现象,用<测试仪>的VI曲线应能测出.
3.整板测试时可采用两种判断方法:a.测试时晶振附近既周围的有关
芯片不通过.b.除晶振外没找到其它故障点.
4.晶振常见有2种:a.两脚.b.四脚,其中第2脚是加电源的,注意不可随
意短路.
五.故障现象的分布
1.电路板故障部位的不完全统计:1)芯片损坏30%, 2)分立元件损坏30%,
3)连线(PCB板敷铜线)断裂30%, 4)程序破坏或丢失10%(有上升趋势).
2.由上可知,当待修电路板出现联线和程序有问题时,又没有好板子,既
不熟悉它的连线,找不到原程序.此板修好的可能性就不大了.
手机 18030129917
电话0592-6372625
QQ 3001408750
E4809-032-217现货
OPUS 5000 SVP CARD
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E4809-045-077-A
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OKUMA PCB
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E4809-045-084-G
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VAC BOARD B
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E4809-045-091-E
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OKUMA PCB
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E4809-045-106
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OKUMA PCB OPUS5000II
E4809-045-110-C
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OKUMA OPUS5000II SPCI
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E4809-045-112-B
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OKUMA OPUS5000
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E4809-045-140
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OKUMA PCB
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E4809-045-148-C
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OKUMA OPUS7000 MAIN BOARD
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E4809-045-158-A
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OKUMA OPUS7000 SVP BOARD
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OKUMA OPUS7000 BOARD
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E4809-045-159
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OKUMA PCB
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E4809-045-166
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OKUMA PCB
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E4809-045-167
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CMOS MEMORY CARD
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E4809-045-174
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E4809-032-217现货
3. Embotics
Embotics的V-Commander设计用来分担很多IT员工的压力，它通过自动化虚拟机的控制，创建基于性能或者关键业务的策略。V-Commander以及入门级V-Scout(有一个免费版本)用来管理个人虚拟机的生命周期或者整体的虚拟架构。
就像我们在产品介绍中提到的那样，V-Commander的版本2可以在VMware、微软和Citrix Xen虚拟机之上运行，同时通过VMware的VirtualCenter来管理应用共享数据。该工具同时包括一个中间代理，它负责交互主流管理应用的数据和命令。Ad hoc设计用来控制那些随意的虚拟机的蔓延，通过限制虚拟机的增长以及已经运行的虚拟机的生命周期增长来做到这一点。
OPUS 5000 SVP CARD
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E4809-045-077-A
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OKUMA PCB
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E4809-045-084-G
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VAC BOARD B
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E4809-045-091-E
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OKUMA PCB
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E4809-045-106
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OKUMA PCB OPUS5000II
E4809-045-110-C
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OKUMA OPUS5000II SPCI
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E4809-045-112-B
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OKUMA OPUS5000
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E4809-045-140
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OKUMA PCB
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E4809-045-148-C
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OKUMA OPUS7000 MAIN BOARD
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E4809-045-158-A
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OKUMA OPUS7000 SVP BOARD
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E4809-045-158-C
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OKUMA OPUS7000 BOARD
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E4809-045-159
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OKUMA PCB
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E4809-045-166
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OKUMA PCB
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E4809-045-167
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CMOS MEMORY CARD
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E4809-045-174
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