RIGOL Chapter 8 Protocol Decoding
8-10 MSO4000/DS4000 User’s Guide
determined by the polarity currently selected. The setting methods of the other
parameters are as follows.
Data Bits
Press Data Bits and turn the multi-function knob to set the number of
bits of each frame of data. It can be set to 5, 6, 7, 8 or 9 and the default is
8.
Check Bit
It is used to check whether the data transmission is correct and is related to
the check mode selected.
Press Even-Odd and turn the multi-function knob to select the desired
even-odd check mode. You can also press Even-Odd continuously to
switch the current even-odd check mode.
― Odd: the total number of “1” in the data bits and check bit is odd. For
example, send 0x55 (01010101); “1” should be added into the check
bit.
― Even: the total number of “1” in the data bits and check bit is even. For
example, send 0x55 (01010101); “0” should be added into the check
bit.
― None: no check bit during the transmission.
Stop Bit
Press Stop Bit and turn the multi-function knob to set the stop bits
after each frame of data. You can also press Stop Bit continuously to
switch the current stop bits. It can be set to 1 bit, 1.5 bits or 2 bits.
Packet
Press Packet to turn the packet display during the data transmission on or
off. When packet display is turned on, several data blocks are combined
according to the packet end. Press PacketEnd and turn the multi-function
knob to select the desired packet end. You can also press PacketEnd
continuously to switch the current packet end. It can be set to 00 (NULL),
0A (LF), 0D (CR), 20 (SP) or FF.
8. Specify the display format
Press Format and turn the multi-function knob to set the display format of
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