Connect channel 1 and channel 2 of TAO3104A tablet oscilloscope to the CAN line, CH1 to CAN-H, and CH2 to CAN-L. The CAN cable is located at the 68 and 67 terminals of the ECU94 pin plug.

We use the external wiring harness to test, in the figure below, 68 is CAN-H, 67 is CAN-L.

The waveform obtained by using TAO3104A tablet oscilloscope is as follows:




Waveform Features:

● The voltage of CAN-H varies from 2.5V to 3.5V, and the average voltage tested with a multimeter is 2.8V.

● The voltage of CAN-L varies from 2.5V to 1.5V, and the average voltage tested with a multimeter is 2.2V.

● Symmetrical waveform.

● The drive CAN line does not have the ability to operate in a single line.

● When the ignition switch is turned off, the drive CAN will stop "jumping". When the ignition switch is at "ON", it will start to "jump", that is, start to transmit information.

  4-CH TAO3000 Series Tablet Oscilloscope

+ bandwidth up to 120MHz, max real-time sampling rate at 1GSa/s

+ vertical resolution hits 14-bit

+ record length 40M, waveform refreshing rate 75,000 wfms/s

+ low base noise, accurate small-signal capturing

+ miscellaneous triggering/decoding function available

+ SCPI and LabVIEW supported

+ 8’’ 800 x 600 pixels multi-point touch screen

+ multi-CI: USB host, USB device, LAN, and optional Wi-Fi

TAO3000 series is equipped with 14-bit high-resolution hardware ADC, the precision is 64 times against other oscilloscope on market. You can observe the waveform details more clearly, and measure the changes of small voltage signals more accurately.

Low background noise allows the oscilloscope to have better small signal measurement capabilities. High storage allows the oscilloscope to acquire longer signals. A high refresh rate allows the oscilloscope to capture waveform details and exceptional events.

TAO3000 series handheld oscilloscopes support multiple trigger modes, including Edge, Video, Pulse, Slope, Runt, Windows, Timeout, I2C, SPI, RS232/UART, CAN, and Nth Edge. Serial bus coding available in I2C, SPI, RS232/UART, and CAN.

Support +, -, *, /, FFT, FFTrms, Intg, Diff, Sqrt, User Defined Function, digital filter (low pass, high pass, bandpass, band reject).

Built-in Wi-Fi module, the user can connect with TAO3000 through a mobile device, realize the same screen display and control, store and view waveform data through the app, share with friends, realize collaborative analysis, and successfully complete the work.

2-CH TAO3000 Series Tablet Oscilloscope

2-in-1: DSO + multimeter

Built-in 4½ digits multimeter, the multimeter interface shows on the same screen with the oscilloscope.

The data logging function of the multimeter can record data for a long time, and export to a CSV file.

Multiple operation methods, make the car maintenance test more convenient.