Possibilities

The CAN-Bus Tester 2 is a widely used measuring device for control of bus parameters. The success story starts already in the year 2002 with the first model. The hardware was completely redesigned in version 2. The corresponding software is still developed and has been enhanced with extensive updates.

Check the setup of the bus before you switch on with the bus wiring test, measure under running conditions down on the physical layer and analyses data of the nodes with the protocol monitor. The longtime monitor shows scattered errors and creeping signal loss.

The trigger output makes it possible to show data from only one node of the bus.

The great box contents within the service case with big adapter set make it possible to use the device out of the box in many environments. You can save your measurements and print a status protocol directly from the software.

License Model

In the basic configuration, the CAN-Bus Tester 2 is enabled for bus system CAN. You can do all physical measurements within this system.

Additional licenses are offered to the systems CANopen, DeviceNet and SAE J1939. With them, it is much easier to assign the messages to the real nodes.

The optional protocol monitor is for logical bus analysis in the bus systems CAN (transmit/receive), CANopen (receive) and SAE J1939 (receive).

The user software is free to download and use, only for measurements with the CAN-Bus Tester 2 it has to be unlocked.

Connections

• Power Supply
  • The device works with 9 – 36 V. Only for the Bus Wiring test min. 24 V is needed.
• USB Port
  • Connect your Windows PC or laptop here.
• CAN and CAN probe port
  • Two 9‑pin D‑Sub ports are for connection to the bus and for probes
• Trigger Output
  • For further measurements with a digital storage oscilloscope, the CAN-Bus Tester 2 can be used as the trigger source.

Two Devices in one

The CAN-Bus Tester 2 is basically a 2‑in‑1 device. One part is responsible for the extensive measurements on the physical level. The 64-fold sampling of each individual bit makes detailed evaluation possible.

The other part is a CAN-to-USB interface for comprehensive protocol analysis. Both parts of the device can work independently of each other or simultaneously and together.

Bus Wiring Test

With the wiring test, it is possible to determine line short-circuits, line breaks, the bus termination, the loop resistance of the CAN line and the CAN power supply line and the overall line length.

To ensure correct bus cabling, it is recommended to perform the wiring test at the beginning of any plant measurements.

Node Measurement

Connect the CAN-Bus Tester 2 to your bus line. You should see a green led on your display, showing that there is data traffic.

First, start the baud rate scan, then scan for nodes. All messages on the bus are now received and analyzed, the nodes with their ID are listed. Name the nodes if you want for a better overview.

With the measurement “all stations view” you get an overview of the quality levels of the signals. The bar diagram makes it easy to compare. At continuous mode, you will additionally see the min/max values. You can easily compare to a saved measurement.

The measurement “one station’s view” shows the single values of one node and shows a physical and logical decoded oscillogram. Quality level, edge steepness and disturbance-free voltage range are the three showed measurands. By starting a continuous measurement you will also see the min/max of quality level and the variation of the disturbance-free voltage range.

Online Monitor

This measurement runs continuously and compares with given thresholds. If it overruns the threshold the error will be registered. In the single measurement mode, it stops and the faulty message is showed in the oscilloscope view. In continuous mode, the error is marked in a timing diagram. So you show when your threshold was overruled or if an error frame has occurred.

The observed values are

• Active-Error /Passive-Error Frames
• Overload Frames
• Acknowledge Error
• General quality level (0 … 100 %)
• Disturbance-free voltage range (minimum noise-free differential voltage)
• Edge steepness (worst rising and falling edge of a message)

Additionally, to this logical and physical measurements, the CAN-Bus Tester 2 is continuously determining bus traffic load, bus status and the optional CAN supply voltage.

The software can be adjusted in a way, that a simultaneously running Receive in the protocol monitor is stopped in case of an error. So it is easier to analyze that data traffic that was on the bus before the error occurred.

Technical Data

Warning :

The CBT2 is a Class A device. Such devices can cause interference in residential areas. In this case, the plant operator can be required to take appropriate measures and to bear the costs of such measures.

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