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處理器 IC800SSI216RD2RR
.功能與參數測試
1.<測試儀>對器件的檢測,僅能反應出截止區,放大區和飽和區.但不
能測出工作頻率的高低和速度的快慢等具體數值等.
2.同理對TTL數字芯片而言,也只能知道有高低電平的輸出變化.而無
法查出它的上升與下降沿的速度.
四.晶體振蕩器
1.通常只能用示波器(晶振需加電)或頻率計測試,萬用表等無法測量,
否則只能采用代換法了.
2.晶振常見故障有:a.內部漏電,b.內部開路c.變質頻偏d.外圍相連電
容漏電.這里漏電現象,用<測試儀>的VI曲線應能測出.
3.整板測試時可采用兩種判斷方法:a.測試時晶振附近既周圍的有關
芯片不通過.b.除晶振外沒找到其它故障點.
4.晶振常見有2種:a.兩腳.b.四腳,其中第2腳是加電源的,注意不可隨
意短路.
五.故障現象的分布
1.電路板故障部位的不完全統計:1)芯片損壞30%, 2)分立元件損壞30%,
3)連線(PCB板敷銅線)斷裂30%, 4)程序破壞或丟失10%(有上升趨勢).
2.由上可知,當待修電路板出現聯線和程序有問題時,又沒有好板子,既
不熟悉它的連線,找不到原程序.此板修好的可能性就不大了.
處理器 IC800SSI216RD2RR
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| IC693CPU352RR |
| IC693CPU360RR |
| IC693CPU363RR |
| IC693CPU364RR |
| IC693DSM302RR |
| IC693MAR590RR |
| IC693MDL230RR |
| IC693MDL240RR |
| IC693MDL241RR |
| IC693MDL310RR |
| IC693MDL330RR |
| IC693MDL340RR |
| IC693MDL390RR |
| IC693MDL641RR |
| IC693MDL645RR |
| IC693MDL646RR |
| IC693MDL655RR |
| IC693MDL730RR |
| IC693MDL731RR |
| IC693MDL740RR |
| IC693MDL742RR |
| IC693MDL752RR |
| IC693MDL753RR |
| IC693MDL930RR |
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| IC693MDL940RR |
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| IC693PCM301RR |
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| IC693PRG300RR |
| IC693PWR321RR |
| IC693PWR322RR |
| IC693PWR330RR |
| IC693PWR331RR |
| IC800MCUB12310XNRR |
| IC800SSD104RS1RR |
| IC800SSD107RS1RR |
| IC800SSI104RD2RR |
| IC800SSI104RS1RR |
| IC800SSI104S1RR |
| IC800SSI107RD2RR |
| IC800SSI107RS1RR |
| IC800SSI216RD2RR |
| IC800SSI228D2RR |
| IC800SSI228RD2RR |
| IC800SSI420RD2RR |
| IC800STI105P2RR |
| IC800STI105S1RR |
| IMC-313D-X-DRR |
| IMC-316P-X-DRR |
| IMC-31CE-2-DRR |
| IMC-78005773RR |
| MTR-3N24-G-R-0-N-SRR |
| MTR-3N32-H-R-0-N-SRR |
| MTR-3S33-G-R-0-E-SRR |
| MTR-3S43-G-R-0-C-SRR |
| MTR-3T43-H-R-0-M-0RR |
| MTR-3T69-G-R-0-M-0RR |
| OIP-73005594RR |
| OIP-73005774RR |
| OIP-DSP1-CRR |
| TGT-000A-2-0RR |
| TGT-000A-4-0RR |
| TGT-3X6L-1-0RR |
| TGT-AI0V-8-0RR |
| TGT-E00A-2-0RR |
| TGT-S000-1-1RR |
| TGT-S00N-1-1RR |
| OMIOLM001 |
| V1SD-W-5M-PUR-ABG-V45-G |
| V1SD-W-2M-PUR-ABG-V45-G |
| V1SD-W-1M-PUR-ABG-V1SD-W |
| V1SD-G-GN5M-TPE-A1S-V45-G |
| V1SD-G-GN2M-TPE-A1S-V45-G |
| V1SD-G-GN1M-TPE-A1S-V45-G |
| V1SD-G-GN1M-TPE-A1S-V1SD-G |
| V1SD-G-GN0.5M-TPE-A1S-V45-G |
| V1S-T-V1 |
| V15S-YEE-V15/V15 |
| V15S-G-1M-PUR-V15S-G |
| V15L-W-5M-PUR-U |
| V15L-W-1M-PUR-U-V15L-W |
| V15L-G-5M-PUR-U |
| V15L-G-3M-PUR-U |
| V15L-G-1M-PUR-U-V15L-G |
| V15-G-BK2M |
| V1-W-BK5M-PUR-U-V1-W |
| V1-W-BK5M-PUR-U-V1-G |
| V1-W-BK3M-PUR-U-V1-G |
| V1-W-BK1M-PUR-U-V1-G |
| V1-G-BK5M-PUR-U-V1-G |
| V1-G-BK3M-PUR-U-V1-G |
| V1-G-BK1M-PUR-U-V1-G |
| ICA-AI-I/U-IO-V1 |
| ICA-A0-I/U-IO-V1 |
| ICA-16DIO-G60AL-IO |
| ICA-16DI-G60A-IO |
| ICA-10DI6DO-G60A-IO |
| 44A731240-G13 |
| IC693ACC323 |
| SUXIANTONGFEI |
| IC693ACC301 |
| IC690ACC905 |
| IC693ACC400 |
| IC690CRG001 |
| IC693ACC315 |
| 44A747151-058 |
| 44A747151-059 |
| 44A747151-060 |
| R2U2N1D3B1T1F |
| R2B1NAM1N3A0A |
| R2B1N4F1N3A0F |
| R2B1N2P2N3A0A |
| R2B0NAM1N3A0A |
隨著大宗商品價格回落以及一系列助企紓困逆周期政策加力顯效，工業企業利潤降幅收窄，上下游利潤結構持續改善。
國家9月27日發布的數據顯示，1~8月份，全國規模以上工業企業實現利潤總額55254.0億元，同比下降2.1%。
國家工業司高級統計師朱虹表示，總體看，工業企業效益呈現恢復態勢，當月利潤降幅較上月收窄，行業結構有所改善，中下游行業利潤繼續恢復。但也要看到，1~8月工業企業利潤仍在下降，企業生產經營成本仍然較高，加之外部環境不穩定不確定因素較多，工業企業利潤恢復的基礎不牢。
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