Circuit boards on line maintenance tester, vi curve tester 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. ================================================== ============ TSH-210 VI Tester core technical parameters are as follows: Package including 1xvi curve tester (Does not contain oscilloscope) 1pairx quality pen 1pairx head bananas imported silicone test leads 1xAC power line 1x + BNC cable Capacitor test : 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: Payment We accept the payment via PayPal only. Payment is expected within 5 days of the auction's end. Availability of the item can not be guaranteed if no payment received in 3 days. Please don't purchase if you are not intend to pay. Unpaid item will report to eBay and get the warning. . Shipping & Handling 1.Items are shipped from china.we will send out within 2 working days after receive the money. 2.We usually send the parcel by Singapore Post Air Mail or HongKong Post Air Mail. After send out,most country will arrived the parcel in 12-25 business days. We also can provide Express,such as Fedex,DHL,EMS,usually 3-7days to most country.If you need Expedited shipping,contact us. The global shipping is difficult to control sometimes,if you havent receive after 25days,contact us,we will check for you. 3.We send to the address of ebay add info,please check your add info of ebay is correct. 4.Some conutries,such as Italy,Brazil,we can ship to,but it usually needs more than 30days to arrive,if you dont care the long time of shipping,contact us. Warranty and Return 1.If you are not satisfied when you receive your item, please return it within 14 days for a replacement or money back. Please contact us before you return it. 2.If item is defective in 14 days, We will send you a replacement without extra charger, or offer refund after we receive the defective item. 3.If item is defective after 14 days, you can still send it back to us. We will send you a new one after receiving the defective item. But you have to pay the extra shipping free. Feedback please leave behind your positive feedback for us after you receive the item, no matter whether you are satisfactory with my item, we will leave behind the same to you. If you want to leave a negative feedback,please contact me at first, we trust that everything could be issued before you leave it. Contact us We work 6 days except Sunday and public holidays. Please feel free to contact us anytime if you have any questions , We will try our best to help you.
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