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Chapter 4 Monitor Function
The purpose of the monitor function is to record communication data into files without affecting the communica
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tion lines. The results will be displayed as CAN/LIN frames. Not only communication data but also time stamp
and external signals are recorded. Besides, LE-270GR can register positioning by GPS receiver and acceleration
information by acceleration sensor. As a result, error time and conditions of external equipments are investigated.
Moreover, the trigger function, which detects specific communication, can be set.
4.1 Communication Condition
Click “
” on the tool bar of the data window (or click “Measurement” -> “Measurement setting”). Set the
communication condition for target devices.
<CAN setting>
● Baud Rate
The analyzer measures data at the preset Bit-timing. Bit-timing is set as 75% of the bit. To change the
Bit-timing, press [Custom].
SS
PTS
PBS1
PBS2
1TQ
5TQ
3TQ
3TQ
Base Frequency: Frequency of Time Quantum
PTS: Propagation Time Segment
PBS1: Phase Buffer Segment 1
(“3-8” when PTS ≤ 2, “2-8” when PTS>2)
PBS2: Phase Buffer Segment 2
(“3-PBS1” when PTS+PBS1 ≤ 4, “2-PBS1” when PTS2+PBS2>4)
SJW: Synchronization Jump Width
(“1-PBS2” when PBS2 ≤ 3, “1-4” when PTS2>3)
● Sampling
Select the number of bit samplings. Select from “Once” or “3 Times”.