SEMITOOL 61520
SEMITOOL 61554
SEMITOOL 62805
SEMITOOL 000M4302-505
对数字芯片而言,仅知道有高低电平的输出变化,但无法查出它的上升和下降沿的变化速度。
4. 对于模拟芯片,它处理的是模拟的变化量。其受电路的元器件的分布,解决信号方案的不同的影响,是错综复杂的。就目前的在线测试技术,要解决模拟芯片在线测试是不可能的。所以,这项功能测试的结果,仅能供参考。
5. 大多数的在线测试议,在对于电路板上的各类芯片进行功能测试后,均会给出“测试通过”或“测试不通过”。那么它为什么不给出被测器件是否有问题呢?这就是这类测试仪的缺撼。因为在线测试时,所受影响(干扰)的因素太多。要求在测试前采取不少的措施(如断开晶振,去掉CPU和带程序的芯片,加隔离中断信号等等),这样做是否均有效,值得研究。至少,目前的测试结果有时不尽人意。
6. 了解在线测试仪的读者,均知道有这么一句行话。“在线测试时不通过的芯片不一定是损坏的;测试通过的芯片一定是没有损坏的。”它的解释为,如器件受在线影响或抗干扰时,结果可能不通过,对此不难理解。那么,是否损坏的芯片在进行测试时,均会得出“不通过”呢?回答确实不能肯定。笔者与同行均遇到过,明明芯片已损坏了(确切地说换上这个芯片板子就不工作了),但测试结果是通过的。权威解释为这是测试仪自身工作原理(后驱动技术)所致。故此我们不能过分依赖在线测试仪(尽管各厂家宣传的很玄)的作用,否则将使维修电路板的工作误入歧途。
维修技巧之二
在无任何原理图状况下要对一块比较陌生的电路板进行维修,以往的所谓“经验”就难有作为,尽管硬件功底深厚的人对维修充满信心,但如果方法不当,工作起来照样事倍功半。那么,怎样做才能提高维修效呢?根据我公司进口设备维修中心统计出来的资料,应遵循以下几个步骤、按顺序有条不紊的进行。
厦门盈亦自动化科技有限公司
电话:0592-6372625 厦门打6372625
手机:118030129917
QQ:3001408750
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SEMITOOL 61501现货
S-BADU-204
AS-BADU-205
AS-HDTA-200C
AS-HDTA-201
AS-HDTA-201C
AS-HDTA-202
AS-HDTA-202C
AS-MBKT-085
AS-MBKT-185
AS-MBPL-001
AS-MEEP-000
AS-MEEP-001
AS-P120-000
AS-P120-125
AS-WBXT-201
AS-WBXT-203
AS-BADU-206
AS-BADU-210
AS-BADU-211
AS-BADU-212
AS-BADU-214
AS-BADU-216
AS-BADU-254
AS-BADU-254C
AS-BADU-256
AS-BADU-256C
AS-BADU-257
AS-BADU-257C
AS-BBKF-201
AS-BBKF-202
AS-BCTR-205
AS-BCTR-212
AS-BCTR-224
AS-BDA0-216
AS-BDAP-204
AS-BDAP-208
AS-BDAP-210
AS-BDAP-211
AS-BDAP-212
AS-BDAP216N
AS-BDAP-217
AS-BDAP-218
AS-BDAP-220
AS-BDAP-250
AS-BDAP-250C
AS-BDAP-252
AS-BDAP-252C
AS-BDAP-253
AS-BDAP-253C
AS-BDAP-258
AS-BDAP-258C
AS-BDAP-292
AS-BDAU-202
AS-BDAU-204
AS-BDAU-208
AS-BDE0-216
AS-BDEA-202
AS-BDEA-203
AS-BDEP-208
AS-BDEP-210
AS-BDEP-211
AS-BDEP-214
AS-BDEP-215
AS-BDEP-216
AS-BDEP-217
AS-BDEP-218
AS-BDEP-220
AS-BDEP-254
AS-BDEP-254C
AS-BDEP-256
AS-BDEP-256C
AS-BDEP-257
AS-BDEP-257C
AS-BDEP-296
AS-BDEP-297
AS-BFRQ-204
AS-BM0T-202
AS-BNUL-200
AS-BNUL-202
AS-BSIM-203
AS-BSIM-216
AS-BVIC-200
AS-BVIC-205
AS-BVIC-212
AS-BVIC-224
AS-BZAE-201
AS-BZAE-204
AS-FLSH-004
AS-FLSH-004C
AS-HDTA-200
施耐德 Quantum系列 高端PLC
140ACI03000
140ACI04000
140DDM39000
140DDM69000
140DDO15310
140DDO35300
140DDO35301
140DDO35310
140DDO36400
140DDO84300
140DDO88500
140DII33000
140DIO33000
140DRA84000
140DRC83000
140DSI35300
140DVO85300
140EDK77100
140EHC10500
140EHC20200
140EIA92100
140ERT85410
140ESI06210
140HLI34000
140MSB10100
140MSC10100
140NOA61100
140NOE31100
140NOE35100
140NOE51100
140NOE55100
140NOE77101
140NOE77110
140NOL91100
140NOL91120
140NOM21100
140NOM21200
140NOM25200
140SHS94500
140xBE10000
140XBP00200
140XBP00300
140XBP00400
140XBP00600
140XBP01000
140XBP01600
140xCA10206
140xCA10215
140xCA71703
140xCA71706
140xCA71709
140XCP20000
140XCP40100
140XCP40200
140XCP50000
140XCP51000
140XCP60000
140XCP90000
140XSM00200
140XSM01000
140XTS00100
140XTS00200
140XTS00203
140XTS00206
140XTS00209
140XTS00212
140XTS00500
140XTS01203
140XTS01206
140XTS01209
140XTS01212
140XTS10206
140XTS10215
140XTS33200
141MMS42501
141MMS53502
490NAA27101
490NAA27102
490NAA27103
490NAA27104
490NAA27106
490NAC72100
490NAD91103
490NAD91104
490NAD91105
490NAE91100
490NOC00005
490NOR00005
490NOT00005
490NRP25300
490NRP25400
490NRP95400
490NTC00005
490NTC00005U
490NTC00015
490NTC00015U
490NTC00040
490NTC00040U
490NTC00080
490NTC00080U
490NTRJ11
490NTW00002
490NTW00002U
490NTW00005
490NTW00005U
490NTW00012
490NTW00012U
490NTW00040
490NTW00040U
490NTW00080
490NTW00080U
499NEH00410
S-BADU-204
AS-BADU-205
AS-HDTA-200C
AS-HDTA-201
AS-HDTA-201C
AS-HDTA-202
AS-HDTA-202C
AS-MBKT-085
AS-MBKT-185
AS-MBPL-001
AS-MEEP-000
AS-MEEP-001
AS-P120-000
AS-P120-125
AS-WBXT-201
AS-WBXT-203
AS-BADU-206
AS-BADU-210
AS-BADU-211
AS-BADU-212
AS-BADU-214
AS-BADU-216
AS-BADU-254
AS-BADU-254C
AS-BADU-256
AS-BADU-256C
AS-BADU-257
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AS-BBKF-201
AS-BBKF-202
AS-BCTR-205
AS-BCTR-212
AS-BCTR-224
AS-BDA0-216
AS-BDAP-204
AS-BDAP-208
AS-BDAP-210
AS-BDAP-211
AS-BDAP-212
AS-BDAP216N
AS-BDAP-217
AS-BDAP-218
AS-BDAP-220
AS-BDAP-250
AS-BDAP-250C
AS-BDAP-252
AS-BDAP-252C
AS-BDAP-253
AS-BDAP-253C
AS-BDAP-258
AS-BDAP-258C
AS-BDAP-292
AS-BDAU-202
AS-BDAU-204
AS-BDAU-208
AS-BDE0-216
AS-BDEA-202
AS-BDEA-203
AS-BDEP-208
AS-BDEP-210
AS-BDEP-211
AS-BDEP-214
AS-BDEP-215
AS-BDEP-216
AS-BDEP-217
AS-BDEP-218
AS-BDEP-220
AS-BDEP-254
AS-BDEP-254C
AS-BDEP-256
AS-BDEP-256C
AS-BDEP-257
AS-BDEP-257C
AS-BDEP-296
AS-BDEP-297
AS-BFRQ-204
AS-BM0T-202
AS-BNUL-200
AS-BNUL-202
AS-BSIM-203
AS-BSIM-216
AS-BVIC-200
AS-BVIC-205
AS-BVIC-212
AS-BVIC-224
AS-BZAE-201
AS-BZAE-204
AS-FLSH-004
AS-FLSH-004C
AS-HDTA-200
施耐德 Quantum系列 高端PLC
140ACI03000
140ACI04000
140DDM39000
140DDM69000
140DDO15310
140DDO35300
140DDO35301
140DDO35310
140DDO36400
140DDO84300
140DDO88500
140DII33000
140DIO33000
140DRA84000
140DRC83000
140DSI35300
140DVO85300
140EDK77100
140EHC10500
140EHC20200
140EIA92100
140ERT85410
140ESI06210
140HLI34000
140MSB10100
140MSC10100
140NOA61100
140NOE31100
140NOE35100
140NOE51100
140NOE55100
140NOE77101
140NOE77110
140NOL91100
140NOL91120
140NOM21100
140NOM21200
140NOM25200
140SHS94500
140xBE10000
140XBP00200
140XBP00300
140XBP00400
140XBP00600
140XBP01000
140XBP01600
140xCA10206
140xCA10215
140xCA71703
140xCA71706
140xCA71709
140XCP20000
140XCP40100
140XCP40200
140XCP50000
140XCP51000
140XCP60000
140XCP90000
140XSM00200
140XSM01000
140XTS00100
140XTS00200
140XTS00203
140XTS00206
140XTS00209
140XTS00212
140XTS00500
140XTS01203
140XTS01206
140XTS01209
140XTS01212
140XTS10206
140XTS10215
140XTS33200
141MMS42501
141MMS53502
490NAA27101
490NAA27102
490NAA27103
490NAA27104
490NAA27106
490NAC72100
490NAD91103
490NAD91104
490NAD91105
490NAE91100
490NOC00005
490NOR00005
490NOT00005
490NRP25300
490NRP25400
490NRP95400
490NTC00005
490NTC00005U
490NTC00015
490NTC00015U
490NTC00040
490NTC00040U
490NTC00080
490NTC00080U
490NTRJ11
490NTW00002
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490NTW00005
490NTW00005U
490NTW00012
490NTW00012U
490NTW00040
490NTW00040U
490NTW00080
490NTW00080U
499NEH00410
VDI67B34271202
VDI67D010
VDI67D0204
VDI67D030
VDI67D0430
VDI67D0431
VDI67D0432
VDI67D0435
VDI67D0437
VDI67D40210
VDI67D40212
VDI67D41210
VDI67D56011
VDI67D56111
VDI67D58011
VDI67D58111
VDI7544B
VDI7561B
VDI7570
VDI7573
VDI7574
VDI7576
VDI7700GE
VDI7700GU
VDI7700SD
VDI7700SDB
VDI7700SR
VDI7700ST
VDI7700SU
VDI7700XGE
VDI7720
VDI7751S
VDI7760
VDI7761
VDI7762
VDI7763
VDI7764
VDI7777F
VDI7777L01
VDI7777L02
VDI7777L03
VDI7777L04
VDI7777L05
VDI7789
VDI7790
VDI7791
VDI7792
VDI7793
VDI7794
VDI7795
VDI7796
VDI7880/01
VDI7899P
VDI8617
VDI8689
VDI9151
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VDI9190
VDI9560
VDI9564
VDI9570
VDI9571
VDI9573
VDI9574
VDI96614
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VDI96714
VDI96722
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VDI96760
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VDI9801
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VDI9804
VDI9860
VDI9864
VDI9870
VDI9871
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VDI9874
VDI9900
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VDI9900N
VDI9901
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VDI9902
VDI9902B
VDI9903
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VDI9904
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VDI9905
VDI9907
VDI99071
VDI99072
VDI99073
VDI99074
VDI9908
VDI9909
VDI9909V
VDI9910F
VDI9910U
VDI9923
VDI9940
VDI9942V
VDI9943
VDI9944
VDI9945
VDI9950
VDI9960
VDI9961
VDI9964
VDI9970
VDI9974
VDI9974NA
VDI9980L10
VDI9980L3
VDI9980L5
VDI9981
VDI9995
VDIA-11101
VDIA-11101CM
VDIA-11101SH
VDIA-11111
VDIA-11111CM
VDIA-11111SH
VDIA-11201
VDIA-11201CM
VDIA-11201SH
VDIA-11211
VDIA-11211CM
VDIA-11211SH
VDIA-50050
VDIA-50100
VDIA-501000
VDIA-50100B
VDIA-50100J
VDIA-50100R
VDIA-50100V
VDIA-50150
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VDIA-50150V
VDIA-50200
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VDIA-50200R
VDIA-50200V
VDIA-50300
VDIA-50300B
VDIA-50300J
VDIA-50300R
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VDIA-50500
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VDIA-50500V
VDIA-50700
VDIA-51050
VDIA-51100
VDIA-511000
VDIA-51100B
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VDIA-51100R
VDIA-51100V
VDIA-51150
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VDIA-51150J
VDIA-51150R
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VDIA-51200
VDIA-51200B
VDIA-51200J
VDIA-51200R
VDIA-51200V
VDIA-51300
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VDIA-51300J
VDIA-51300R
VDIA-51300V
VDIA-51500
VDIA-51500B
VDIA-51500J
VDIA-51500R
VDIA-51500V
VDIA-51700
VDIA-54050
VDIA-54100
VDIA-54200
VDIA-54300
VDIA-54400
VDIA-54500
VDIA-56050
VDIA-56050/02
VDIA-56080
VDIA-56080/02
VDIA-56150
VDIA-56150/02
VDIA-57050
VDIA-57080
VDIF0615151101
VDIF0615151102
VDIF0615151103
VDIF0615151105
VDIF0615152201
VDIF0615152202
VDIF0615152203
VDIF0615152205
VDIF0615251101
VDIF0615251102
VDIF0615251103
VDIF0615251105
VDIF0615252201
VDIF0615252202
VDIF0615252203
VDIF0615252205
VDIF0615301101
VDIF0615301102
VDIF0615301103
VDIF0615301105
VDIF0615302201
VDIF0615302202
VDIF0615302203
VDIF0615302205
VDIF0625251101
VDIF0625251102
VDIF0625251103
VDIF0625251105
VDIF0625252201
VDIF0625252202
VDIF0625252203
VDIF0625252205
VDIF0625252301
VDIF0625252302
VDIF0625252303
VDIF0625252305
VDIF0625301101
VDIF0625301102
VDIF0625301103
VDIF0625301105
VDIF0625302201
VDIF0625302202
VDIF0625302203
VDIF0625302205
VDIF0625452201
VDIF0625452202
VDIF0625452203
VDIF0625452205
VDIF0625452301
VDIF0625452302
VDIF0625452303
VDIF0625452305
VDIF0626263501
VDIF0626263502
XVME-6250全球疯狂低价甩卖
XVME-6250全球疯狂低价甩卖
Siemens 6DD1610-0AG1
Siemens 6DD1642-0BC0
Siemens 6DD1640-0AC0
Siemens 6DD1610-0AG0
Siemens 6DD1660-0BD0
Siemens 6DD1606-3AC0
Siemens 6DD1601-0AE0
Siemens 6DD1600-0AF0
Siemens 6DD1660-0AJ0
Siemens 6DD1600-0AF0
Siemens 6DD1607-0AA1
Siemens 6DD1600-0AF0
Siemens 6DD1640-0AC0
Siemens 6DD1611-0AD0
Siemens 6DD1660-0AH1
Siemens 6DD1645-0AC0
Siemens 6DD1640-0AC0
Siemens 6DD1682-0CH2
Siemens 6DD1607-0CA1
Siemens 6DD1611-0AD0
Siemens 6DD1611-0AD0
Siemens 6DD1601-0AH0
Siemens 6DD1660-0AH0
Siemens 6DD1640-0AC0
Siemens 6DD1600-0AF0
Siemens 6DD1641-0AC0
Siemens 6DD1681-0AE1
Siemens 6DD1610-0AF1
Siemens 6DD1606-1AA0
Siemens 6DD1601-0AB0
SIEMENS 6DD1681-0EB2
Siemens 6DD1600-0A?E2
Siemens 6DD1600-0AF0
Siemens 6DD1660-0AK0
Siemens 6DD1600-0AF0
Siemens 6DD1683-0BB0
Siemens 6DD1600-0AF0
Siemens 6DD1660-0BB0
Siemens 6DD1642-0BC0
Siemens 6DD1611-0AE0
Siemens 6DD1642-0BC0
Siemens 6DD1688-0AD0
Siemens 6DD1681-0CD0
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厦门盈亦自动化科技有限公司
电话:0592-6372625 厦门打6372625
手机:118030129917
QQ:3001408750
EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE
厦门盈亦自动化科技有限公司
电话:0592-6372625 厦门打6372625
手机:118030129917
QQ:3001408750
EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE