User Manual
79
Pattern Trigger
The Pattern trigger identifies a trigger condition by looking for a specified pattern. The
pattern trigger can be expanded to incorporate delays similar to other triggers. Pattern
durations are evaluated using a timer.
The timer starts on the last edge that makes the
pattern “true”.
Potential triggers occur on the first edge that makes the pattern false,
provided that the time qualifier criterion has been met.
The oscilloscope
provides 4
patterns: logical AND, OR, NAND and NOR combination of the channels. Each channel
can be set to low, high or invalid.
Channel 1High
Channel 2 Low
AND Waveform
Trigger position 1
Trigger position 2
Do the following steps to set pattern trigger:
1. Press the
Setup
button on the front panel to enter the TRIGGER function menu.
2. Press the
Type
softkey; turn the
Universal Knob
to select Pattern, and then push
down the knob to confirm.
3. Press each channel softkey to select
Invalid
,
High
or
Low
.
●
Low
sets the pattern to low on the selected channel. A low is a voltage level that
is less than the channel's trigger level or threshold level.
●
High
sets the pattern to high on the selected channel. A high is a voltage level
that is greater than the channel's trigger level or threshold level.
●
Invalid
sets the pattern to invalid on the selected channel. Any channel set to
invalid is ignored and is not used as part of the pattern.
However, if all channels in the pattern are set to
Invalid
, the oscilloscope will not
trigger.
Adjust the trigger level for the selected analog channel by turning the Trigger
Level knob.
Invalid
doesn’t need to set a trigger level.
4. Press the
Next Page
softkey to enter the second page of the pattern trigger menu.
5. Press the
Logic
softkey and then turn the
Universal Knob
to select the desired logic
combination
AND
,
OR
,
NAND
or
NOR
.
6. Press the
Time
softkey; then turn the
Universal Knob
to select the desired time
value.
7. Press the
Holdoff Close
softkey to turn on the Holdoff function; then turn the
Summary of Contents for T3DSO1000
Page 1: ...User Manual T3DSO1000 T3DSO1000A Series Digital Oscilloscope...
Page 62: ...44 User Manual Figure 16 x Interpolation Figure 17 Sinx x Interpolation...
Page 90: ...72 User Manual Figure 32 Relative Window Trigger...
Page 92: ...74 User Manual Figure 33 Interval Trigger...
Page 98: ...80 User Manual Universal Knob to select the desired value Figure 37 Pattern Trigger...
Page 118: ...100 User Manual Figure 50 UART Trigger...
Page 145: ...User Manual 127 function output Figure 63 Square Root...
Page 205: ...User Manual 187 Figure 100 Option Information...