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15.1.2 Bus Setting
Set the Bus
Click or tap drop-down button of BUS to select the digital bus (CH1-CH4) for Parallel
decoding. You can also self-define the bus.
Table 15.1 Bus Setting
Bus Width Bit X Channel Remarks
CH1 1 0 CH1
Width, Bit X, and CH are
set automatically, and you
cannot modify them.
CH2 1 0 CH2
Width, Bit X, and CH are
set automatically, and you
cannot modify them.
CH3 1 0 CH3
Width, Bit X, and CH are
set automatically, and you
cannot modify them.
CH4 1 0 CH4
Width, Bit X, and CH are
set automatically, and you
cannot modify them.
User 1 (Default) to 4 0 (Default) CH1~CH4 -
Set the Threshold Level
To judge logic "1" and logic "0" of the buses, you need to set a threshold for each
analog channel (CH1~CH4). When the channel signal amplitude is greater than the
preset threshold, it is judged as logic "1"; otherwise logic "0".
Click or tap the input field of Threshold, and then use the pop-up numeric keypad to
set the threshold. You can also use the corresponding multipurpose knob to set the
value. The range of the threshold is related to the current vertical scale and offset.
Endian
In Endian, select "Invert" or "Normal" as the endian of the bus.
Polarity
In
Polarity, select "Positive" or "Negative" as the data polarity.
Protocol Decoding
DHO4000 User Guide
196
Copyright ©RIGOL TECHNOLOGIES CO., LTD. All rights reserved.
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