Rigol DHO924 oscilloscope

DHO900 series user manual - Page 125

For DHO924.

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DHO924 photo
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Source Selection
Click or tap the drop-down button of
Source to select CH1-CH4 or D0-D15. For
details, refer to descriptions in
Trigger Source
. The selected trigger source is indicated
in the trigger information label at the top of the screen.
Only when you select the channel that has signal inputs as the trigger source, can you
obtain a stable trigger.
Protocol Version
In
Version, select the protocol version that matches the signal under test. The
available versions include 1.X, 2.X, and Both.
Baud Rate
Click or tap the drop-down button of
Baud to select the preset baud rate. The
available baud rates include 1.2 kbps, 2.4 kbps, 4.8 kbps, 9.6 kbps, 19.2 kbps, and etc.
You can also self-define the baud rate.
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.
One Bit
60%
70%
80%
Figure 8.37 Sample Position
Click or tap the
Sample Position input field and use the pop-up numeric keypad to
set the value. You can also use the corresponding multipurpose knob to set the value.
The settable range is from 10% to 90%.
Triggering the Oscilloscope
Copyright ©RIGOL TECHNOLOGIES CO., LTD. All rights reserved. DHO900 User Guide
109
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