User manual

Chapter 5 To Trigger the Oscilloscope RIGOL
MSO2000A/DS2000A User’s Guide 5-35
 : set the pattern of the channel selected to “L”, namely the voltage level is
lower than the threshold level of the channel.

: set the pattern of the channel selected to “Don’t Care”, namely this channel is
not used as a part of the pattern. When both the channels in the pattern are set
to “Don’t Care”, the oscilloscope will not trigger.
Trigger Condition:
Press When to select the desired trigger condition.
 >: trigger when the duration of the pattern is greater than the preset time.
Press Time and use or the inner knob of the navigation knob to adjust the
duration of duration trigger at a relatively smaller step or use the outer knob of
the navigation knob to adjust the duration of duration trigger at a relatively
larger step. The range is from 2 ns to 4 s.
 <: trigger when the duration of the pattern is lower than the preset time. Press
Time and adjust the duration of duration trigger using or the navigation
knob by referring to the method mentioned above. The range is from 2 ns to 4 s.
 <>: trigger when the duration of the pattern is lower than the upper limit of the
preset time and greater than the lower limit of the preset time. Press Upper
Limit and adjust the duration upper limit of duration trigger using or the
navigation knob by referring to the method mentioned above; the range is from
12 ns to 4 s. Press Lower Limit and adjust the duration lower limit of duration
trigger using
or the navigation knob by referring to the method mentioned
above; the range is from 2 ns to 3.99 s.
Note: The time lower limit must be lower than the time upper limit.
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.
Trigger Level:
The trigger level of each channel needs to be set independently. For example, set the
trigger level of CH1. Press Source to open the signal source list and select CH1; use
TRIGGER
LEVEL to modify the level. For the details, please refer to the
introduction of “
Trigger Level”.