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6. Press the Holdoff softkey and turn V0 to set the time that the oscilloscope waits before a trigger to
the next trigger, so that complex waveforms are displayed stably.
2.7.7. Pattern Trigger
Identify a trigger condition by looking for a specified pattern. This pattern is a logical "AND" or “Or”
combination of channels. Each channel can have a value of high (1), low (0) or don't care (X). A rising,
falling edge, rising or falling can be specified for one channel included in the pattern. When an edge is
specified, the oscilloscope will trigger at the edge specified if the pattern set for the other channels are
true (namely the actual pattern of the channel is the same with the preset pattern). If no edge is
specified, the oscilloscope will trigger on the last edge that makes the pattern true. If all the channels in
the pattern are set to "Don’t Care", the oscilloscope will not trigger.
To set interval trigger:
1. Press the [Trig Menu] button on the front panel to enter the Trigger system function menu.
2. Press the Type softkey, then use the Multifunctional Knob to select Pattern and push down the knob
to confirm.
3. Press the Logic softkey, turn the Multifunctional Knob to select a logical "AND" or “Or” combination
of channels and push down the knob to confirm.
4. Press Pattern to set the pattern of the current signal source, turn the Multifunctional Knob to select
a pattern. At this point, the corresponding pattern is displayed on the menu. The patterns of channels
CH1-CH2 are presented from left to right. You can set the pattern of a signal source when the souce is
open. Press Pattern softkey to set pattern for other sources.
1: Set the pattern of the channel selected to "H", namely the voltage level is higher than the trigger
level of the channel.
0: Set the pattern of the channel selected to "L", namely the voltage level is lower than the trigger
level of the channel.
X: Set the pattern of the channel selected to "Don’t Care", namely this channel is not used as a part
of the pattern. When all channels in the pattern are set to "Don’t Care", the oscilloscope will not
trigger.
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