Rigol MSO8204A Rigol MSO8000A series user guide

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continuously or enable the touch screen to select it. You can select CH1-CH4 or

D0-D15.

- When you select the analog channel (CH1-CH4), press Threshold, then rotate

the multifunction knob or use the pop-up numeric keypad to set the

threshold of the source channel. When you modify the threshold of the clock

channel, 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.

4. Set the Signal

Press Settings to enter the signal setting menu.

- Select the channel

Press Channel to select a channel ("A" or "B") that matches the actual FlexRay

bus signal.

- Specify the signal rate

Press Baud to open the baud rate list (2.5 Mbps, 5 Mbps, and 10 Mbps), and

select a preset baud rate that matches the actual FlexRay　bus　signal. You can

also press Baud continuously, then rotate the multifunction knob or use the

numeric keypad to set the desired baud rate.

- Set the signal type

Press Signal and rotate the multifunction knob to select a signal type that

matches the actual FlexRay bus signal. Press down the knob to select it. You can

also press Signal continuously or enable the touch screen to select it. The

available signal types include BP, BM, and RX/TX.

- 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

267

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Rigol MSO8204A oscilloscope