Name: Rigol DS4024
Brand: Rigol
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RIGOL Chapter 8 Protocol Decoding

8-12 MSO4000/DS4000 User’s Guide

The event table displays the detailed decoding information (include the

decoded data (TX and/or RX) as well as the corresponding line number, time

and error information (TX and/or RX)) of the waveform on the screen in time

order. At most 10 lines of decoding information can be displayed on one

page (the line number starts from 0). You can turn the multi-function knob

to select the specified line and view the corresponding decoding

information. The line currently selected is highlighted with brown shading

and the decoded data of this line is dispalyed at the lower-left side of the

event table.

Note:

 The display format of the decoded data in the event table is determined

by the bus display format currently selected (refer to “Format”).

 When adjusting the horizontal time base, the waveform displayed on

the screen will change and the total number of lines of decoding

information in the event table will change.

 The decoded data information displayed in the bus is related to the

horizontal time base. You can view the detailed information by reducing

the horizontal time base.

2) If a USB storage device is currently connected to the instrument, you can

press Export to export the decoded data list to the external USB storage

device in CSV format.

11. Error expressions during decoding

Check error and end of frame error may occur during RS232 decoding. When

decoding error occurs, red error mark

or (the display form is related to the

horizontal time base) is displayed.

 Check Error

When a check bit error is detected during the decoding, a red error mark

will be displayed. For example, when the transmitting terminal is set to

none check and the decoder is set to odd check, the following check error

occurs. Wherein, there is an odd number (1) of 1 in the 8-bit data 00000100

and the check bit should be 0. But, the check bit detected on the TX is 1;

thus a check error occurs.

Rigol DS4024 User Manual

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