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Description:
What is a ProbeASA?
- ProbeASA is a tester which provides an efficient and most cost effective means of locating faulty electronic devices (components) in trouble shooting printed circuit boards.
What is the technology principle?
- Using the Analog Signature Analysis method, safe low power drive voltages are applied to a object (usually a pin of a device) to produce an “impedance signature” which is displayed as a curve on screen. The difference between a curve from a known good board and a curve from a faulty board in corresponding place suggests whether there is a fault.
There are two benefits with this method:
All testing is done with power off, it is very safe to use in any case.
Users do not need to know much about the board circuitry.
What are the main features of the ProbeASA?
Working under support of database, as long as ASA data from good boards are saved in it, those data can be used as references at any time you need, just as you have good boards at hand all the time;
All ASA data from trouble shooting faulty boards can be saved in database. You can review all test results after the process of trouble shooting any time you want, just as they are still being in the process;
A board and each device on it can have its own “navigation information window”. Users can put anything in it as long as they benefit later on testing of the board or devices, such as write text in it, cut part of screen which contains ASA curve(s) and paste onto it, and insert graph files into it. The feature of one mouse click/key down invoking navigation information offers users a very efficient management system for electronic repairing.
Most of operations are conducted by the picture (image) of the tested board, so it has more friendly user interface, and is easier to use. As a result, users can work more efficiently.
How to construct test system?
ProbeASA is designed to run under the control of a microcomputer within the WindowsXP and up operating system. Both communicate via a USB interface.
What is the size?
260*175*45mm
This device has part of chindler elevator board library, others do not, users can build their own library, can also share with other users.
The device is an English version of the interface and database.
The device is connected to the computer via USB, and the test data, fault phenomena and maintenance methods can be stored in the computer.
Support win10, win7, xp system
Apple system is currently not supported
If you encounter problems while installing the software, Follow this step to check Unicode and change to simplified Chinese if not simplified Chinese.
Compared with similar products, ProbeASA circuit board repair tester has the biggest feature that it supports two test methods:
1. Direct test method
This is generally supported by similar circuit board repair testers. Use two test probes to test the board and the faulty board at the same time, display the two measured curves together, and judge the failure according to the difference between the curves.
2. Image library test method
The ProbeASA circuit board repair tester can learn the ASA curve of a good board and store it on the computer through the operation of building a library. It can be used as a reference standard at any time in the future. In this way, when you have a chance to get a good board, you can build a library for it without losing the opportunity to solve the problem of referencing standards once and for all; of course, if someone has already built the library, just pass the library file to you, and you can immediately Conduct a control test.
The library-building test method of ProbeASA circuit board repair tester also brings two functions that help improve work efficiency:
1) In the process of repairing and testing the faulty circuit board, record which components have been tested and the test curve, so that the test site at that time can be reproduced at any time in the future. This is called a test record.
2) Enter the test points, precautions, fault characteristics and other information worth recording of the user's summary of each circuit board and each component on the circuit board into the respective test navigation, allowing both pictures and texts, and just one button Check it out. These two functions lay a good foundation for the establishment of a maintenance technology management system.
Product features include three major categories:
1. Direct test function
General functions of similar products:
Advantages: direct test and control test ASA (curve). Similar to the use of a multimeter. easy to use.
There are voice prompts for double-bar comparison, so you don't need to look at the screen to know whether the test has passed or not;
Disadvantages: Test data and device data are not saved, and computer images, databases, computing power, etc. cannot be used to improve the use effect.
2. Circuit board image library test
The circuit board is used as a unit to store the learning, comparison curves and related materials of the on-board devices. The test process is mainly carried out on the photos of the circuit board.
Advantages: Use the computer's image, database, and computing power to support the ASA curve test.
Disadvantages: simple computer operation is required, supporting win10, win8, win7, xp, and currently does not support Apple system computers.
3. Device offline test function (optional. Need to be purchased separately)
Take the device as a unit, learn the curve of a good device and save it in the database, which can be used to directly test the quality of the device in the future. It is a good assistant for screening devices, especially second-hand parts and dismantling parts.
The first category: direct test function
Includes 3 sub-functions:
1.1 Single point single curve test
General functions of similar products:
Only one test point for each test point, or two curves for comparison test. Supports functional testing of three-terminal devices. For example, triodes, thyristors, and 4-terminal devices that can be equivalent to three terminals, such as ordinary optocouplers, relays, transformers, etc.;
1.2 Single point 4 curve test
Improper setting of test parameters affects test results. But proficiency is not a day's work. This is one of the main problems faced by beginners.
The output resistance pair is the parameter that has the greatest influence on the curve. Here one test point uses 0.1K, 1K, 10K, 100K, 4 different output impedances, test or compare test 4 curves. There is always a curve that is best. Users do not need to choose by themselves. See the picture below:
The fault is clearly seen in the first set of parameter curves.
1.3 Test capacitance
This product has unique characteristics for testing capacitors. Especially online testing.
Some products require the user to select the frequency and output resistance for testing capacitance, which is difficult to use; some products require the user to input the capacitance first, and the tester sets the parameters according to the input capacitance value, but the test accuracy is directly related to the capacitance deviation. , Easy to make mistakes.
This product does not require any user settings and is equivalent to a fully automatic capacitance meter.
More meaningfully, it also passes the small signal ASA curve of the capacitor to indicate whether the test is affected by the external circuit. It is of practical value for testing the capacitance on the circuit board.
The following is an online test result of a good capacitor. The curve is a positive ellipse, indicating that the external circuit does not affect the test result, and the measured capacitance value is accurate.
The second category: circuit board image library test
In this function, the device curve of a good board is learned and stored in the computer database, which is called building a library. In this way, once the curve library of a good board is established, you don't always have to have a good board at hand, and it can be used as a reference standard for detecting bad boards at any time; you can also communicate with other peers and share the curve library.
The meaning of the image is that the test can be defined and executed on the displayed circuit board photo, which is intuitive and convenient.
Rough library building process: take a picture of the circuit board with a mobile phone and import it into the computer; draw a rectangle on the device and define the rectangle as the corresponding component; click/double-click the circuit icon to test the device. Rectangles with different colors indicate devices that are learning/not learning, and testing passed/failed.
There are also the following features:
a. Structured circuit board library management
The curve library files of the circuit board are stored in categories and hierarchically based on equipment and components. Similar to Windows Explorer;
b. Fault navigation information
Can define fault navigation information for each device, record test precautions, maintenance history, etc. In the image window, click a device with the mouse, and its fault navigation information will automatically appear on the fault navigation page
The third category: device offline ASA curve test (optional. Need to be purchased separately)
Learn the pin curve of the good device, and store it in the device curve library in the unit of device (search by device model) as a test reference standard.
Using the ASA test method, it is theoretically possible to test any type and any type of device. This is of practical significance for the situation where the amount of the device is small and the type is mixed in the maintenance, and the old device is often used or disassembled.
c. Export circuit board library
Convenient to share circuit board library between users
The third category: device offline ASA curve test (optional. Need to be purchased separately)
Learn the pin curve of the good device, and store it in the device curve library in the unit of device (search by device model) as a test reference standard.
Using the ASA test method, it is theoretically possible to test any type and any type of device. This is of practical significance for the situation where the amount of the device is small and the type is mixed in the maintenance, and the old device is often used or disassembled.
1. Test port
Double test port: support double rod comparison test;
Double probes per port: ASA curve probe + pulse probe;
2. Test signal
ASA signal amplitude: the maximum peak-to-peak value is 30V, the minimum is 0.5V, and the step distance is better than 0.1V;
Pulse signal amplitude: Same as above
Output resistance: 100K/10K/1K/100 ohm
Signal frequency: 0.5H——16KHz sub-file can be set
Size: 260*175*45mm
Weight: 1.25 kg
Computer requirements: Win10, Win8, Win7, XP operating system, USB port
