Many faults found in CAN bus systems have physical causes. With the CAN Bus Tester it is possible to detect and analyze these faults. The most important logical analysis functions are also integrated into the CBT2 (otherwise found only in protocol analyzers). The CBT2 can be used with all bus systems with 11- or 29-bit identifiers according to ISO 11898-2. Particular emphasis was placed on simple operation. A USB interface makes hot plug&play possible between PC and the CBT2. Automatic baud rate detection and the self-connecting BusScan enable easy monitoring of the physical signal-to-noise ratio of the bus, sorted according to CAN-identifiers. Generally, devices that transmit messages with low signal-to-noise ratio are highly susceptible to failure. Depending on the test strategy, various methods of identifying faults can be used including setting various trigger events (identifier, physical and/or logical faults and error-frames). In the case of a fault, the pre- and post-history of up to 128 messages can be viewed. All faults are defined up to the individual bit position and are displayed with a time stamp. A trigger signal, available via the external trigger output, can be used for triggering an oscilloscope. A certain (faulty) CAN-message can be shown selectively on the oscilloscope.

Temporary faults on the bus or a slowly deteriorating signal quality, which can lead to the failure of the communication system, can be registered with an intuitive logger function. Since the CBT2 collects its data while the plant is running, costly downtime of machines and plants is avoided.

Highlights

• Analysis of the physical level of all messages
• Physical analysis of signal-to-noise ratio and edge quality of selectable messages
• Comprehensive trigger conditions for fault detection
• Logger function for long-term analysis
• Automatic baud rate detection
• Simple connection to CAN-system
• Simple operation via Windows program

Technical Data

• Use CAN according to ISO 11898-2 (High-Speed) with 11-bit or 29-bit identifier (CAN 2.0A and 2.0B)
• Baudrate - 5 k, 10 k, 20 k, 50 k, 62,5 k, 100 k, 125 k, 250 k, 500 k, 800 k, 1000 kBit/s
• Baudrate detection - all baudrates
• Signal-to-noise voltage range display - .9 V ... 5.0
• Resolution for signal-to-noise voltage range - 0.1 V
• Bit sampling - 32 times
• Bus load - Permanent display in %
• Cycle time measurement - Minimum 300 µs, resolution 10 µs
• Trigger on - ID, physical failures (flank quality), logic errors (CRC, ACK, form-faults), active/passive error-flags
• Trigger output - BNC-socket, electrically isolated
• Logger function - Signal-to-noise voltage ratio for all IDs
• Connection to CAN bus - Passive, 2 x 9-pole SUB-D connector
• PC connection - Via USB, electrically isolated
• Supply voltage - 11 ... 36 V DC, DIN 45323 low-voltage socket; 0.1 ... 0.3A
• Dimensions and weight - H = 35 mm, W = 109 mm, L = 143 mm, 320 g
• Safety/protection - EN 60950 / IP 20 according to EN 60529
• EMC EN50081-1, EN50082-2
• Temperature range - speration: +5 °C ... +40 °C; storage: -20 °C ... +60 °C

Content of delivery

• CAN-Bus-Tester CBT
• CAN adapter cable, 30 cm long, 4-pole with conduit-thread connector
• USB cable, 3 m
• Adapter circuit board, for easy connection of an oscilloscope
• Power unit 100 V - 240 V / 50 Hz; 24 V, 500 mA
• Power cable, 1.8 m
• Manual including CD (German/English)
• Rugged Carrying Case

System requirements

• PC: > 400 MHz, USB interface, CD-ROM drive
• Operating system Windows 98/Me/2000