The Mt Pro 4 is a powerful automotive lab scope designed for diagnosing internal combustion engines and various vehicle systems across all makes and models. This comprehensive diagnostic tool provides a window into the intricate workings of a vehicle by visualizing changing signals within wires and analyzing internal engine processes. Leveraging advanced software, the MT Pro 4 offers essential functionalities like an oscilloscope, spectrum analyzer, and specialized tests tailored for automotive signals. This allows mechanics to pinpoint issues with secondary voltage, in-cylinder pressure, engine compression, battery/starter/charging systems, and power balance.
MT Pro 4 Hardware and Software Features
The MT Pro 4 boasts a durable, impact-resistant metal casing with a scratch-resistant powder coating, effectively shielding the device from external electromagnetic interference generated by high-voltage circuits. The front panel features nine color-coded BNC connectors for analog and trigger channels, along with a grounding terminal. The rear panel houses a DJK-02 power connector, an RJ45 connector for PC connectivity, and a threaded hook mounting point. The meticulously designed PCB minimizes interference from ignition and power circuits, ensuring accurate readings.
The MT Pro 4 package includes:
- One MT Pro 4 oscilloscope
- One 5-meter shielded RJ45 FTP patch cord with a built-in USB power line
- One hanging hook for convenient mounting
Deep Dive into MT Pro 4 Software Capabilities
The MT Pro 4 software provides a suite of powerful diagnostic tools:
Oscilloscope Function
The oscilloscope function allows simultaneous display of data from any combination of analog channels and the triggering channel. Data can be viewed in Oscilloscope, Capture, or Recorder modes. All analog channels can display signals in relevant physical units like pressure and current.
Secondary Voltage Analysis
This feature automatically analyzes primary and secondary ignition voltage signals captured using capacitive (Cx) or inductive (Lx) sensors. Signals can be displayed in parade, raster, or overlay formats for easy comparison and diagnosis.
Power Balance Test
This test identifies malfunctions causing unstable engine running, calculates cylinder efficiency across different operating modes, detects misfires (including chaotic ones), and pinpoints the root cause within the fuel system, ignition system, or engine mechanics.
In-Cylinder Pressure Analysis
This function analyzes in-cylinder pressure in gasoline engines, calculating critical parameters like compression ratio, combustion chamber leaks, gas distribution phase, fuel-air mixture efficiency, exhaust system efficiency (including catalyst clogging), and ignition timing.
Cylinder Comparison
This feature facilitates visual comparison of signals from all cylinders, highlighting deviations in operation. This universal diagnostic approach allows for analyzing pressure pulsations in the intake manifold, exhaust pipe, fuel system, crankcase, injector control signals, and other periodic signals.
Electrical Power Equipment Test
This comprehensive test assesses the condition of the battery, starter (including solenoid relay and terminals), alternator (voltage regulator, rectifiers, and power circuits), and glow plugs (in diesel engines). Results are displayed in a single chart with numerical values and deviations.
Spectrum Analyzer
This function performs spectral analysis of any signal and processes signals using a customizable digital filter. Signal spectrograms are generated against time and crankshaft angle, enabling convenient comparison of noise from various engine mechanisms.
