QDB4A QDB-5A car sensor test oscilloscope PWM motor diagnostic tool

QDB4A QDB-5A car diagnostic tool is a versatile professional device for testing car electrical systems and components. This compact diagnostic device combines oscilloscope functions, PWM output, multi-meter capabilities and sensor simulations into one powerful solution. The automotive diagnostic tool helps to quickly detect faults in engine control systems, injectors, candle systems and other components just at the workplace.

Car diagnostics tool - main features

• Oscilloscope function - Displays signals from various sensors and components with accurate graphics, allowing to see the waves of electrical signals and determine their anomalies without complex calculations.
• PWM output control - Frequency from 1 to 100 kHz, smooth-adjustable output cycle (0 to 100%) and voltage (1,25 to 14,5V) for testing solenoids, injectors and electronic fans.
• Integrated Multimeter - Measure continuous voltage up to 30V, resistance up to 1 MΩ, current up to 1,8A, capacity between 10 nF and 1000 µF and diode settings on one device.
• Step Engine Simulation - Suitable for cold start engines, instrument panel engines and other stepping engines to control their operation.
• Color TFT screen - A large and clear 2,4-inch display shows waves, readings and all settings in real time, easy to read in sunlight.
• Powerful power system - Accepts 9-26V DC, compatible with 12V and 24V cars, can supply up to 2,5A output current for external equipment control.
• Compact and comfortable form - Easy manual structure with ergonomic design allows testing almost anywhere: repair workshops, garage or road.

Technical specifications

• Model: QDB4A / QDB-5A
• Oscilloscope wave reading: up to 20 MHz frequency
• PWM frequency: 1-100 kHz
• PWM test cycle: 0-100%
• PWM voltage: 1,25-14, 5V
• Multimeter DC voltage: 0-30V
• Multimeter resistance: 0-1 MΩ
• Multimeter current: 0-1,8A
• Multimeter capacity: 10 nF-1000 µF
• Power supply: DC 9-26V
• Maximum output current: 2,5A
• Display: TFT color 2,4 inch
• Weight: about 400 g

Who is it suitable for and how to use it?

The car diagnostics tool is ideal for professional mechanics, bus technicians and self-repair enthusiasts. Used for testing injection systems, for diagnostics of the candle coil and ignition system, for checking urea pumps, electronic fans and flow sensors. Practical advice: first connect the device to the car battery or engine control system, select the appropriate test from the menu and monitor the results on the screen. The car diagnostic tool is particularly useful for remote testing without expensive computer diagnostic systems.

Buyer questions

Q: Is this diagnostic tool suitable for all car brands?
Yes, QDB4A- QDB- 5A is designed for general automotive electrical systems and is compatible with most 12V and 24V systems. It tests the standard electrical properties of sensors and components and therefore works with European, Asian and American cars.

Q: Do you need special training to use this instrument?
The interface of the device is simple and intuitive, but it is recommended to know the basic concepts of electronics. Menu control is done with simple buttons, frequency and cycle adjustable by turning the knob. Business lovers and beginners may need to read the guide.

Kl: How long does the warranty and delivery of this device last?
Standard guarantee 12 months from the date of purchase. In the TopSmart shop, delivery to Lithuania is hampered by 5-14 working days depending on the region. Return policy 30 days warranty if the product is not consumed.

QDB4A car diagnostic tool is a great investment for all who take care of car maintenance and repair seriously. If you want to quickly and accurately identify the problems of electrical components, this compact and multifunctional diagnostic tool is the ideal choice. You will find it in the TopSmart store with the best prices.

Sources: Car electronics | TopSmart store