Triggering
3-98
CSA7000B Series & TDS7000B Series Instruments User Manual
When you select the type State, the instrument uses channel 4 as a clock and
triggers on a logic circuit made from the rest of the channels (page 3--80
describes how state triggers work). To use state triggering, do the following
procedures.
Overview To trigger on a state Control elements and resources
Select state
triggering
1. From the toolbar, touch Trig, select the A Event tab of
the Trigger control window, and touch Select.
2. Touch State.
Define inputs 3. To set the logic state for each of the input channels
(Ch1, Ch2, Ch3, and Ch4), touch each Input Threshold
and select either High (H), Low (L), or don’t care (X)
from the menu. The choices for Ch4 are rising (POS)
edge and falling (NEG) edge.
Set thresholds 4. To set the logic threshold for each channel, select the
channel threshold, and use the multipurpose knob or
keypad to set each threshold.
Define logic 5. To choose the logic pattern type you want applied to
channels 1 through 3, touch an available type from the
Pattern Type window. (See Table 3--5 on page 3--80 for
definiti ons of the logic functions for both pattern and
state triggers.)
To Trigger on a State
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