เครื่องเปรียบเทียบไอซี ดีหรือเสีย เปรียบได้แม่นยำ
ใช้งานคู่กับเครื่อง ATTEN ADS1102 100MHz Digital
Description:
1, the machine is fully compatible with vi test areas most classic models Tektronix tr210.
The only difference 2,220v power version and 110v / 220V power version that is not connected to the internal power select switch is fixed in the 220v input state, the other does not make any difference. (You can switch to prevent accidental dialing cause burning insurance) default only made 220v fixed plate.
3. The need to match the use of an oscilloscope, not too high demands on the oscilloscope, as long as the dual trace oscilloscope can be. But the best choice for analog oscilloscope, digital oscilloscope is less desirable, and more details of the data is lost.
Summarize vi tester:
One, ASA test application features
AnalogSignatureAnalysis (analog characteristic analysis) is a kind of fault detection techniques are widely used in electronic circuit boards. Application has the following characteristics:
1. Does not involve circuit principle, no circuit is in working condition, so can be used without drawing information from the device (no line detection) of the fault detection circuit board;
2. No need to power the board, relatively more secure;
3. Does not involve a circuit board device function, so no matter what type of device is composed of a circuit composed of digital, analog, mixed, and function of known, unknown (such as a dedicated, programmable) and the like, can be tested ;
4. It is by the circuit node (device pins) to test, basically limited by the circuit board components of the package. Because a single device can be regarded as the most simple circuit board, so the technique can also be used for detection of ASA massive, complex or unknown function integrated device is good or bad. In fact, due to limited conditions, ASA is the only way for many users to detect such devices. In addition, ASA discrete components for the detection function is good or bad, there are easy and intuitive features.
Two, ASA basic test principle
On the basic principles in terms of detection, ASA can be seen as a natural extension of multimeter test assay.
For without drawing board, the most common fault detection method is this: the first with a multimeter to measure the good board device pin (actually a circuit node) resistance to ground; then the corresponding device and fault circuit board pins compare the resistance to ground, according to the difference in size to determine whether the failure on the node. The need to manually determined by the junction to the specific components. This method is simple, easy to use and effective, many people are using this method to fix too complicated and expensive circuit boards.
The impact of this approach is mainly due to the fault detection rate, the multimeter can only be detected under resistance at 1.5V (battery voltage multimeter), and ground resistance varies with the voltage semiconductor device pins - resistance is not necessarily different voltages the same. For example, a TTL device pin at 2.5V with soft breakdown, have a greater leakage current. Such a fault can not be detected.
Imagine that you have dozens or hundreds of blocks multimeter, battery voltage of each block table is not the same - voltage range includes the operating voltage of the device. For each pin, these tables are used all the tests, the control again, so that the above mentioned faults will be detected. This is the ASA test principle - in a voltage range, not just compare the next voltage point.
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TSH-210 VI Tester core technical parameters are as follows:
Package including
1xvi curve tester
1pairx quality pen
1pairx head bananas imported silicone test leads
1xAC power line
1x + BNC cable
Capacitor test photos
Resistor Test :
Zener test:
mos tube trigger conduction test :
Way thyristor conduction testing process
A node in the circuit board image:
A node in the circuit board image:
A node in the circuit board image:
สินค้า By order 15-20 วัน
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