商铺名称:厦门盈亦自动化科技有限公司
联系人:刘莉(小姐)
联系手机:
固定电话:
企业邮箱:3001679289@qq.com
联系地址:厦门市集美区杏林禹州中央海岸一期5号楼923室
邮编:361022
联系我时,请说是在瑞启化工网上看到的,谢谢!
1794-IB8 端子
.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.
1794-IB8 端子
1794-ACNR15XT |
1794-ADN |
1794-ADNK |
1794-AENT |
1794-AENTR |
1794-AENTRXT |
1794-CE3 |
1794-CJC2 |
1794-IA16 |
1794-IA8 |
1794-IA8I |
1794-IB10XOB6 |
1794-IB10XOB6XT |
1794-IB16 |
1794-IB16D |
1794-IB16XOB16P |
1794-IB16XT |
1794-IB32 |
1794-IB8 |
1794-IC16 |
1794-ID2 |
1794-IE12 |
1794-IE4XOE2 |
1794-IE4XOE2XT |
1794-IE8 |
1794-IE8XOE4 |
1794-IE8XT |
1794-IF2XOF2I |
1794-IF2XOF2IXT |
1794-IF4I |
1794-IF4IXT |
1794-IF8IH |
1794-IF8IHNFXT |
1794-IG16 |
1794-IH16 |
1794-IJ2 |
1794-IJ2XT |
1794-IM16 |
1794-IM8 |
1794-IP4 |
1794-IR8 |
1794-IRT8 |
1794-IRT8XT |
1794-IT8 |
1794-IV16 |
1794-IV32 |
1794-LBL |
1794-N2 |
1794-NM1 |
1794-OA16 |
1794-OA8 |
1794-OA8I |
1794-OB16 |
1794-OB16D |
1794-OB16P |
1794-OB16PXT |
1794-OB32P |
1794-OB8 |
1794-OB8EP |
1794-OB8EPXT |
1794-OC16 |
1794-OE12 |
1794-OE4 |
1794-OE4XT |
1794-OF4I |
1794-OF4IXT |
1794-OF8IH |
1794-OG16 |
1794-OM16 |
1794-OM8 |
1794-OV16 |
1794-OV16P |
1794-OV32 |
1794-OW8 |
1794-OW8XT |
1794-PS13 |
1794-PS3 |
1794-TB2 |
1794-TB3 |
1794-TB32 |
1794-TB32S |
1794-TB37DS |
1794-TB3G |
1794-TB3GK |
1794-TB3GS |
1794-TB3GSK |
1794-TB3K |
1794-TB3S |
1794-TB3SK |
1794-TB3T |
1794-TB3TK |
1794-TB3TS |
1794-TB3TSK |
1794-TB62DS |
1794-TBN |
1794-TBNF |
1794-TBNK |
1794-VHSC |
1796-CNET32 |
1799-12SPCON |
1799-AUXCON |
FOXBORO FBM237 冗余8通道0-20MA输出接口组件 可选冗余8AO |
FOXBORO FBM237? P0914XS |
FOXBORO FBM24/25 触点/125V直流电压输入 16DI |
FOXBORO FBM240 P0917GZ |
FOXBORO FBM240 P0917GZ FBM240 |
FOXBORO FBM240电缆P0916FH |
FOXBORO FBM241 8通道电压监视输入,8通道离散量输出(外部电源) 8DI/8DO |
FOXBORO FBM241 P0914TG |
FOXBORO FBM241 P0914TG |
FOXBORO FBM241b 8通道电压监视输入,8通道离散量输出(内部电源) 8DI/8DO |
FOXBORO FBM241b P0914WK |
FOXBORO FBM241c 8通道触点输入,8通道离散量输出(外部电源) 8DI/8DO |
FOXBORO FBM241d 8通道触点输入,8通道离散量输出(内部电源) 8DI/8DO |
FOXBORO FBM242 16通道触点输出(外部电源)接口组件(可选冗余) 可选冗余16DO |
FOXBORO FBM242 P0916TA |
FOXBORO FBM242 P0916TA |
FOXBORO FBM242? P0916TA |
FOXBORO FBM243 8通道双向FOXCOM双波特率智能设备接口组件 8IT |
FOXBORO FBM243 P0914TK |
FOXBORO FBM246 冗余8通道双向FOXCOM双波特率智能设备接口组件 冗余8IT |
FOXBORO FBM26/27 触点/125V直流电压输入/输出 8DI/8DO |
FOXBORO FBM39 智能变送器输入/0-20MA输出 4AI/4AO |
FOXBORO FBM41/42 触点输入/触点输出(2.25A) 8DI/8DO |
FOXBORO FBM46 冗余智能变送器输入/0-20MA输出 4AI/4AO |
FOXBORO FBM底板 P0926JM |
FOXBORO FCM100E P0972ZA |
FOXBORO FCM100Et P0926GS |
FOXBORO FCM100E电缆 P0972TR |
FOXBORO FCM10E |
FOXBORO FCP270(F)与FBM接口 |
FOXBORO FCP270(F)与FBM接口线 |
FOXBORO FCP底板 P0926HW |
FOXBORO FCS现场总线卡 |
FOXBORO FOBORO P0400VT |
FOXBORO FOXBORO CFT10 I/A |
FOXBORO FOXBORO DO117KP |
FOXBORO FOXBORO FPS400-24 |
FOXBORO FOXBORO 83W-D01S1SSTNA |
FOXBORO FOXBORO P0400DL |
FOXBORO FOXBORO P0400DL |
FOXBORO FOXBORO P0400QA |
FOXBORO FOXBORO P0400QJ |
FOXBORO FOXBORO P0400QK |
FOXBORO FOXBORO P0400QK |
FOXBORO FOXBORO P0400VP |
FOXBORO FOXBORO P0400VR |
FOXBORO FOXBORO P0400VT |
FOXBORO FOXBORO P0400YP |
FOXBORO FOXBORO P0400YT |
FOXBORO FOXBORO P0400YV |
FOXBORO FOXBORO P0700WB |
FOXBORO FOXBORO P0700WB |
FOXBORO FOXBORO P0800DA |
FOXBORO FOXBORO P0901VK |
FOXBORO FOXBORO P0902DZ |
FOXBORO FOXBORO P0903ZE |
FOXBORO FOXBORO P0904AJ |
FOXBORO FOXBORO P0911AC |
FOXBORO FOXBORO P0911PU |
FOXBORO FOXBORO P0911VW MIW GCIO |
FOXBORO FOXBORO P0911ZZ |
FOXBORO FOXBORO P0912HM |
FOXBORO FOXBORO P0913ED |
FOXBORO FOXBORO P0914XA |
FOXBORO FOXBORO P0914ZM |
FOXBORO FOXBORO P0961CA |
FOXBORO FOXBORO PM400VP |