Frequently Asked Questions

The Kvaser Leaf v3 offers everything you love about the Kvaser Leaf Light v2 with a host of improvements and new features that enhance its performance and compatibility. Let’s dive into what’s been expanded and added in the v3 version. 

Expanded Features 

1. CAN Bit Rate:
   The Kvaser Leaf v3 supports a CAN bit rate range from 20 kbit/s to 1 Mbit/s, with the lowest bit rate reduced from 40 kbit/s.
2. Timestamp Resolution:
   Improved timestamp resolution is at 50 µs compared to the previous 100 µs, providing greater precision.

New Features 

1. CAN FD Support:
   Kvaser Leaf v3 introduces CAN FD functionality, with bit rates of up to 8 Mbit/s, making the Kvaser Leaf v3 well-suited for high-speed applications.
2. Silent Mode:
   With silent mode, you can listen to a CAN bus without transmitting, including avoiding ACKs, perfect for monitoring systems.
3. Increased Message Rate:
   Experience a significant boost in message rate, jumping from 8,000 msg/s to 20,000 msg/s.
4. Hidden Updates:
   This version comes with improved firmware handling that allows for seamless updates in the background.
5. Improved USB Handling:
   Enhanced USB communication for faster data transfer between your software and the Kvaser Leaf v3. 

Circuit Board Version: 

1. The same dimensions:
   The Kvaser Leaf v3 CB (01532-6) shares the same dimensions as the Kvaser Leaf Light HS v2 (00733-8), Mounting hole location remains unchanged, as is the LED position, so the new product is a drop-in replacement for the old product.
2. M3-sized mounting holes:
   Mounting holes have been increased to 3.5mm from 2.54mm, with an increased plating width around the holes to facilitate the use of M3 screws and ensure a robust installation
3. Soldering Options:
   Alternative cables can be soldered to the new Kvaser Leaf v3 CB. The identity of each pin is printed on both sides, to make self-build PC applications easier. 
4. STEP file availability:
   For users who prefer to make their own enclosure, a STEP file is available for download. 

Compatibility and Drivers 

1. Software Compatibility:
   The Kvaser Leaf v3 is fully compatible with the Kvaser Leaf Light v2, so no code changes are required to use it. However, if your software specifically identifies the Kvaser Leaf Light v2 by name or EAN, you will need to update the software to recognize the Kvaser Leaf v3.
2. Driver Update:
   Ensure your drivers are up to date. You will need version 5.41 or later (released after 2023-05-01) for full compatibility with the Kvaser Leaf v3.

Have Questions? 

If you have any technical queries or need further assistance, don’t hesitate to reach out to our support team at SUPPORT@KVASER.COM. 

Error-frames are very rare and in a good system there should be no Error-frames.

Even if you have Error-frames there main cause in a system is a delay of information.

It is better to handle problem on a system level where communication Errors are covered as any other error in a control system.
It should also be noted that in a real time system is one sample error like a small glitch than have very short duration in time and in most cases cannot be recognized.

The best to test a system is to place a test unit between the unit and the CAN-bus. By this test unit it is possible to delay CAN-frames and even remove CAN-frames to check how the system handle loss of information.

By this it is even possible to modify the data to check that the system can handle wrong input data without causing dangerous conditions in the system.

With good cabling there will be no Error-frames to handle.

If you get Error frames it should be registered by date and time.

This will help you to find the reason for the Error-frames.
There is no reason to have a CAN-bus with Error frames and if they occur regular with a certain intensity there is reason to find the cause of the Error-frames and take action to remove the cause of the Error-Frames.