Rigol DHO4204 DHO4000 series user manual

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Quickly Apply Trigger Settings to Decoding

Copy trig indicates applying the trigger settings to the specified decoding setting.

Click or tap Copy Trig to apply the trigger settings to the specified decoding setting.

15.5.1 Signal Configuration

Set the source and the threshold

• Click or tap drop-down button of Source to select the desired source. The

sources include CH1-CH4.

• Click or tap the input field of Threshold, and then use the pop-up numeric

keypad to set the threshold of the source channel. You can also use the

corresponding multipurpose knob to set the value.

When you modify the threshold of the signal source, a dotted line displaying the

current threshold level is displayed on the screen. It disappears in about 2 s after

you stop modifying the threshold.

Select the Signal Type

Click or tap the drop-down button of Signal to select a signal type that matches the

CAN bus signal. The available signal types include CAN_H, CAN_L, Rx, Tx, and Diff.

• CAN_H: indicates the actual CAN_H bus signal.

• CAN_L: indicates the actual CAN_L bus signal.

• Rx: indicates the Receive signal from the CAN bus transceiver.

• Tx: indicates the Transmit signal from the CAN bus transceiver.

• DIFF: The CAN differential bus signals connected to an analog source channel by

using a differential probe. Connect the probe's positive lead to the CAN_H bus

signal and connect the negative lead to the CAN_L bus signal.

Specify the Standard Signal Rate

Click or tap the drop-down button of Baud to select the preset baud rate. The

available baud rates include 10.0 kbps, 19.2 kbps, 20.0 kbps, 33.3 kbps and etc.

Sample Position

Sample position is a point within a bit's time. The oscilloscope samples the bit level at

this point. The sample position is represented by the proportion of "the time from the

start of the bit to the sample point" to the "bit time", as shown in the figure below.

Protocol Decoding

DHO4000 User Guide

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Rigol DHO4204 oscilloscope