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29
Idle Time:
Adjust the Multipurpose knob (shuttle knob or numeric keypad) to set the
idle time.
Trigger Setting:
Please refer to the Trigger Setting in the “Edge Trigger” section for more details.
Edge Value:
Press the PgDn key and adjust the Multipurpose knob (shuttle knob or
numeric keypad) to set the number of edges.
5.13 Code Pattern Trigger
The code pattern trigger identifies the trigger condition by looking for the
specified code patterns. The code type is the combination of the channel logic
"AND", each channel can be set to H (high), L (low), X (ignored). You can
also specify a path in the code type as a rising edge or falling edge (only
one edge can be specified). If the code pattern of the other channels are
"true" (i.e., the actual code is consistent with the default code type), the
oscilloscope will trigger on the specified edge. If the edge is not specified,
the oscilloscope will trigger at the last edge of the code type "true". If the code
pattern of all channels are set to "ignore", the oscilloscope will not trigger.
Press TRIG MENU type, and select code pattern by the Multipurpose
knob. You can also switch the trigger type by consecutively pressing the type
key, then press the Multipurpose knob to confirm.
At this time, the trigger setting information is displayed at
the upper right corner of the screen, the trigger type is code pattern, the
trigger source is CH1, and the trigger level is 0.00V.
Nth Edge Trigger Menu
Source:
Press the source key to select the trigger source, you can select CH1, CH2,
CH3, or CH4. The currently selected source is displayed at the upper right
corner of the screen.
Note: Only selecting the channel with connected signals as a trigger source
can obtain a steady trigger.
Code Pattern:
Press the code key to select H, L, X, rising edge, or falling edge. The code
pattern setting of each channel is displayed at the bottom of the screen, as
shown: 。
(1) H: Set the code pattern value of the selected channel to “High”, that is,
the voltage level is higher than the trigger level of the channel.
(2) L: Set the code pattern value of the selected channel to “Low”, that is,
the voltage level is lower than the trigger level of the channel.
(3) X: Set the code pattern value of the selected channel to “Ignored”, that is,
the channel is not part of the code pattern. The oscilloscope will not trigger
if all channels in the code pattern are set to “ignored”.
(4) Rising edge: Set the code pattern to the rising edge of the selected channel.
(5) Falling edge: Set the code pattern to the falling edge of the selected channel.
Trigger Setting:
Please refer to the Trigger Setting in the “Edge Trigger” section for more
details.
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