Source Setting; To Set Data Package - Rigol HDO1000 Series User Manual

Protocol Decoding
14.2.1

Source Setting

Set the Tx source and the threshold
Click or tap drop-down button of Tx 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 Tx source. You can also use the corrsponding multipurpose knob
to set the value. The range is from -1.00 V to 1.00 V. Its default value is 0 V.
When you modify the threshold of the Tx source 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.
Set the Rx source and the threshold
Use the same method to select the Rx source and set the threshold. The default state
of Rx is OFF.
Polarity
Select "Positive" or "Negative" in Polarity.
• Positive: Uses negative logic. High level is logic "0" and low level is logic "1".
• Negative: Uses positive logic. High level is logic "1" and low level is logic "0".
Set the baud rate
Click or tap the drop-down button of Baud to select the preset baud rate. The
available baud rates include 50 bps, 75 bps, 110 bps, 134 bps, 150 bps, and etc.
The oscilloscope allows you to self-define the baud rate. Click or tap the drop-down
button of Baud to select "User" and then set the baud rate with the pop-up numeric
keypad.
14.2.2

To Set Data Package

Data
Click or tap the drop-down button of Data to select the data bits. The available data
bits are 5 bits, 6 bits, 7 bits, 8 bits, and 9 bits.
Parity
It is used to check whether the data transmission is correct. Click or tap the drop-
down button of Parity to select the desired parity mode.
• None: indicates that no check bit appears during the transmission.
HDO1000 User Guide
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