The universal measuring device is meant for diagnosing internal combustion engines as well as other systems of modern cars of all makes and models.

Key Features


MLab (Ukraine)

Number of universal channels

8 analog channels, 1 synchronization channel (with self-tuning)

Analog channel sensitivity

12 hardware subbands with a ±0.1 V to ±500 V range, additional amplifiers x1, x2, x5, x10 (6th and 8th channels)

Pseudo-differential channels

2 pcs (6-5 channels, 7-8 channels)

Analog channels bandwidth

1 to 4 channels - 250 kHz, 5 to 8 channels - 1 MHz

Maximum sampling rate

6 MHz (depending on how many analog channels are on)

ADC resolution

12 bit

Channel’s input resistance

1 Mohm minimum

Measuring channel input connector


Data connection interface

Ethernet 100M

Operating system

WindowsXP / Vista / 7 / 8

Supply voltage

5 ± 0.5 V (galvanic isolation)

Insulation resistance

1000 Mohm minimum

Power consumption

1.8 W maximum

Measuring unit’s overall dimensions

207 x 102 x 40 mm

Case material

steel (powder coating)

Operating temperature range

-20 to 80℃

Measuring unit weight (including a connection cable)

540 g (740 g)




Contents of delivery

  • an oscilloscope - 1 pc
  • a RJ45 FTP patch cord (shielded), 5e category, 5-metre long, with USB-port built-in power line - 1 pc
  • a hanging hook for the device - 1 pc

Design of the device

MT Pro 4.1 Automotive oscilloscope design

The device has an impact-resistant metal case with a scratch-resistant powder coating. The steel case almost completely eliminates all external electromagnetic interference from the high-voltage circuits of the ignition system. The function of all connectors is signed on the case.

On the front of the oscilloscope there are nine BNC connectors for connecting to analog channels and a synchronization channel, as well as a ground terminal for the device.

On the rear panel of the oscilloscope there is a DJK-02 connector for connecting the power source, an RJ45 connector for connecting the device to the PC netcard, a threaded hole for screwing in the hook.

The printed circuit board of the device is designed considering interference from ignition systems and power circuits of the car. The elements are mounted on the automated assembly line.



Allows displaying data on the screen simultaneously from analog channels in any combination, as well as the 9th synchronization channel in one of the three modes: Oscilloscope, Single, Recorder.

In all analog channels signals can be displayed in the appropriate physical quantities (pressure, current, etc.)

Secondary voltage

This window allows you to automatically analyze the primary and secondary voltage signals of the ignition system, obtained with the help of capacitive or inductive sensors.

Cylinders efficiency

The full test allows detecting malfunction when the engine’s running unstably, as well as calculating the efficiency of each cylinder in different engine operating modes, detecting misfires (especially chaotic ones) and locating their cause (fuel system, ignition system, engine mechanics).

Showing how to perform the CSS script by Andrey Shulgin or Cylinders efficiency using MT Pro automotive oscilloscope

Pressure in the cylinder

This window allows you to automatically analyze pressure in the cylinder of the gasoline engine. According to the pressure signal, characteristics of the cylinder-piston group and the gas distribution mechanism are calculated such as the compression ratio, leaking in the combustion chamber, the gas distribution phase, the efficiency of cylinder’s fuel-air mixture filling, the exhaust system efficiency (the catalytic converter), and the ignition timing chart.

Comparison of cylinders

This window allows you to conveniently display signals from all cylinders, which helps visually locate the deviations in the operation of one of the cylinders. Visual comparison provides universality, for it is not tied to a particular signal, but is based only on finding differences in the signals of the cylinders. You can analyze the signals of pressure pulsations in the intake manifold, exhaust pipe and fuel system, pulsations of crankcase gas pressure, injectors control signals, as well as any other periodic signals.

Electrical equipment

The full test allows assessing the state of the battery, the starter (retractor relay and its power circuits), the generator (voltage regulator, rectifier unit of their power circuits), glowplugs (for diesel engine cars). The test result with numerical values and their deviations is displayed in one chart.

Spectrum analyzer

Spectral analysis of an arbitrary signal; signal processing by an arbitrarily tuned digital filter. Signal spectrograms are made regarding time and crankshaft rotary angle, which makes it convenient to compare the noise from various ICE mechanisms.

Download the latest software version

The latest version of the distribution is always available for download from the link below. To install it, you need to download the archive and unpack it to the destination folder. Later on, to update the program, you just need to replace the MtPro4.exe executable file.

Version: alpha
Date: 22.05.19