User Manual

Chapter 5 To Trigger the Oscilloscope RIGOL
MSO2000A/DS2000A User’s Guide 5-39
 Error: trigger when error frame is detected. After this trigger condition is
selected:
--press Stop Bit to select “1 bit” or “2 bit”;
--press Even-Odd to select “None”, “Odd” or “Even”.
The oscilloscope will determine error frame according to the preset parameters.
 Check Error: trigger when check error is detected. When this trigger condition is
selected:
--press Stop Bit to select “1 bit” or “2 bit”.
--press Even-Odd to select “Odd” or “Even”.
The oscilloscope will determine check error according to the current settings.
 Data: trigger on the last bit of the preset data bits. When this trigger condition is
selected:
--press Data Bits to select “5 bit”, “6 bit”, “7 bit” or “8 bit”;
--press Data and input the data value according to the setting in Data Bits and
the ranges are from 0 to 31, from 0 to 63, from 0 to 127 and from 0 to 255
respectively.
--press Stop Bit to select “1 bit” or “2 bit”.
--press Even-Odd to select “None”, “Odd” or “Even”.
Baud Rate:
Set the baud rate of data transmission (equal to specifying a clock frequency). Press
Baud to set the desired baud rate to 2400 bps, 4800 bps, 9600 bps (default), 19200
bps, 38400 bps, 57600 bps, 115200 bps, 230400 bps, 460800 bps, 921600 bps, 1
Mbps or User. When “User” is selected, press Setup and use or the inner knob of
the navigation knob to adjust the baud rate at a relatively smaller step or turn the
outer knob of the navigation knob to adjust the baud rate at a relatively larger step.
The adjustable range is from 110 bps to 20 Mbps.
Trigger Mode:
Press Sweep to open the trigger mode list and select “Auto”, “Normal” or ”Single”.
For the details, please refer to “
Trigger Mode”. The corresponding status light of
the current trigger mode turns on.
Trigger Setting:
Press Setting to set the trigger parameters (trigger holdoff and noise rejection)
under this trigger type.
Note: Noise rejection is grayed out and disabled automatically when the signal
source is set to any channel of D0-D15.