DM303Automotive Multimeter

Working Principle

The AUTOOL DM303 Automotive Multimeter, based on its multifunctional integrated design, combines multimeter, oscilloscope, and automotive circuit testing technologies. It provides precise and comprehensive detection of automotive circuits and electronic systems through various operating modes and sensor interfaces, helping technicians efficiently and accurately diagnose issues.

AUTOOL DM303 Automotive Multimeter Features

More Functions: The DM303 automotive diagnostic meters is an upgraded handheld diagnostic tool that utilizes advanced embedded digital control technology. It integrates four core functions: digital oscilloscope, digital multimeter, automotive circuit testing, and automotive signal diagnostics.

Oscilloscope Function: The AUTOOL DM303 auto digital multimeter is equipped with a powerful oscilloscope function, supporting signal input, data sampling, data processing, and automatic searching. Its waveform testing bandwidth reaches up to 500kHz, allowing for precise capture and analysis of various signals in automotive electronic systems. With an adjustable sampling frequency, the DM303 effectively measures slow-changing signals, helping users clearly diagnose complex electrical faults, ensuring accurate troubleshooting and efficient repair work.

Analog Signal Output: The DM303 features a powerful analog signal output function, supporting square wave and sine wave output. It can simulate automotive ECU signals, enabling precise testing of the starting system, injectors, and relays’ operational status. It can also drive fuel injector signals for testing, checking, and diagnosing internal vehicle data signals, including K-line and CAN bus signals, helping to quickly locate faults in the electronic control system and improving repair efficiency.

Wide Applicability: The DM303 is suitable for various automotive repair scenarios, particularly in the process of major vehicle repairs, where it can precisely measure and analyze multiple signals within automotive circuits. It supports motor drive signals and motor power voltage measurement for new energy vehicles, as well as key parameters for fuel vehicles, including engine ignition pulse signals, camshaft signals, crankshaft signals, wheel speed sensor signals, oxygen sensor signals, and more. Whether for traditional fuel vehicles or new energy vehicles, the DM303 provides comprehensive and accurate signal detection, helping technicians efficiently diagnose and repair.

Precision Detection: The DM303 delivers accurate voltage and current measurement capabilities. Its voltage measurement input impedance is 2~3MΩ for voltages below 160V and 10MΩ for voltages above 160V, with a maximum input voltage tolerance of up to 1000Vpp. With an analog bandwidth of up to 500kHz and support for automatic voltage range conversion, the DM303 ensures precise measurements across various signal types.

Three-year warranty: For damages caused by non-human factors, AUTOOL promises to provide free replacement parts within three years. If you have any requests, please feel free to contact us, and we will respond promptly within 24 hours.