HamGeek 1Hz-20KHz VI Curve Tester Circuit Board Tester Built-in Signal Generator Automatic Scanning

HamGeek 1Hz-20KHz VI Curve Tester Circuit Board Tester Built-in Signal Generator Automatic Scanning

Description:
The VI Curve Tester employs a unique technique for diagnosing component failures when the circuit is not powered. This technology uses AC positive excitation, which can test the characteristic curve of the current corresponding to the voltage of the component in the power-off state, and can display it on the display screen. Because each component has its own specific curve, when the component fails, the curve also changes. Therefore, using the VI curve tester to analyze the curve of the component can diagnose the fault.

Main Functions of VI Curve Tester:
1. It can test a single component offline, test the VI characteristics of any component, and accurately analyze whether the device is damaged or damaged (the degree of accuracy far exceeds that of a multimeter).
2. The quality of various components can be tested online (the VI curve setting needs to be adjusted according to the situation).
3. It can be used to test the change of VI characteristics of each point on the entire circuit board, judge the characteristic relationship between various components, and quickly find damaged components (it is more convenient and efficient to have the same circuit board or symmetrical circuit).

Features of VI Curve Tester:
1. Convenient and safe to test the quality of components without powering on the circuit board.
2. Use the hyperbolic mode to compare the same or symmetrical circuits, and the screen will display the VI characteristic curves of the two circuits under test at the same time, which can quickly and accurately find the fault point.
3. Automatic scanning function is added, which can automatically change the frequency and internal resistance, quickly and accurately determine the characteristic curve of the detection point, and improve the detection efficiency.
4. High voltage scanning mode can read the value of Zener diode.
5. Have a very intuitive ability to judge difficult test components (such as transformers, capacitors, transistor soft faults, integrated circuits, etc.).
6. Built-in signal generator outputs controllable voltage and current signals, and the frequency and duty cycle are adjustable. With the VI curve, functional tests of various components (such as triodes, field effect transistors, thyristors, IGBT tubes, various optocouplers and driver chip) can be performed.
7. The equipment is powered by 24V DC, and the adapter 110-220V can work, regardless of the region. The tester is compact and easy to carry. So it is suitable for on-site maintenance.

Can be Used for the Following Tests:
① Diagnose unconditionally powered lines.
② In the qualitative mode, the special characteristics of the suspected component can be diagnosed.
③ Use the known component characteristics to compare the characteristics of the unit under test
④ Compared with the power-on diagnosis method, the vi curve tester avoids the possibility of short-circuiting other points during the power-on test, for he power-on way may cause further damage to components or damage to other components on the circuit board.
⑤ Safe and reliable diagnosis: don't be afraid of short circuit caused by power-on.
⑥ Carry out regular repairs by checking whether components are possible and defective.
* Protective Sense Elements: ASA's queuing fault technology applies virtually no voltage to the board, which greatly reduces component damage
* Reduce the risk of accidental short circuits
* Qualitative Troubleshooting: For a questionable component, you can identify the substantive problem
⑦ Predict the performance of components to be installed in the circuit: TR210 for Tektronix can visually display the component simulation curve in a curve format when both ends of the component are connected to the instrument. ASA can test any passive components: resistors, capacitors, inductors, solid-state semiconductor components (diodes, transistors, thyristors), and a variety of digital and analog mixed-signal IC chips. When diagnosing a circuit board fault, the composite curve is composed of various component curves between nodes on the circuit. By understanding the meaning of the different curves, you can determine the specific fault location of the component.

Specifications:
1. General Parameters:
- Dimensions: 20 x 15 x 4.4cm/7.9 x 5.9 x 1.7" (LxWxT)
- Color LCD: 7" touch screen
- Weight of main unit: 1.1KG/2.4LB

2. VI Output Characteristics:
1. Frequency: 1Hz~20KHZ, step by 1Hz (continuously adjustable)
2. Normal mode voltage: 0.6v, 4v, 8v and16v; High voltage mode: ≈80v
3. Output internal resistance: 10Ω~12750Ω, step by 50Ω (continuously adjustable)
4. Output current: 400mA

3. Signal Generator:
1. Square wave voltage: 0V~16V continuously adjustable
2. Square wave current: 1mA~99mA continuously adjustable
3. Output duty cycle: 1%~99% continuously adjustable (valid in both voltage and current modes)
4. Output frequency: 0~10KHz continuously adjustable (valid in both voltage and current modes)
5. Positive and negative polarity output: voltage 0-16V, current 1-70mA, and frequency 0-10000Hz

Package Included:
- 1 x VI Curve Tester
- 1 x Pair of Test Leads
- 2 x Alligator Clip Cables
- 1 x Power Adapter