Triggering
CSA7000 Series, TDS7000 Series, & TDS6000 S eries Instruments User Manual
3- 109
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--91
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 tri g-
gering
1. From the toolbar, touch Trig and select the A Event tab
of the Trigger control window.
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’tcare(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 mult ipurpose k nob or
keypad to set each threshold.
Define logic 5. To choose the logic patt ern type you want applied to
channels 1 through 3, t ouch an available type from the
Pattern Type window. (See Table 3--5 on page 3--91 for
definitions of the logic functions for both pattern and
state triggers.)
To Trigger on a State
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