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Chapter 5 To Trigger the Oscilloscope
the desired error type: Sync, Even Odd, or Check Sum.
Protocol Version:
Click More → Version to select the protocol version that matches the signal under
test. The available versions include 1.X, 2.X, and Both.
Baud Rate:
Click More → Baud to set the baud rate. The setting methods are available for baud
rate:
Click Baud, then set the user-defined baud rate with the displayed numeric
⚫
keypad or by scrolling with the mouse.
Click Baud to select the preset baud rate from the available options. The
⚫
available baud rates include 1.2 kbps, 2.4 kbps, 4.8 kbps, 9.6 kbps, 19.2 kbps,
and etc.
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 position" to the "bit time", as shown in the figure below.
Click More → Sample Position, then use the pop-up numeric keypad or scroll with
the mouse to set the sample position. The settable range is from 10% to 90%.
Trigger Mode:
For details, refer to descriptions in "Trigger Mode".
Trigger Parameter Setting:
Set the trigger parameter (noise rejection) under this trigger type. For details, refer
to descriptions in "Noise Rejection".
Trigger Level:
Refer to "Trigger Level". The current trigger level value is displayed at the
upper-right corner of the screen.
DS8000-R User Guide
One Bit
60%
70%
Figure 5-21 Sample Position
80%
RIGOL
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