Reference
The range of tim
e values for pulse width (regular and runt) and slew rate is
from39.6nsto10s.
In the menu tab
les, N represents a numeric value entered using the general
purpose knob.
Pattern Trigger
Pattern triggering triggers the oscilloscope when two signals become logically
true or fals
e. Basically, the pattern-triggering feature triggers the oscilloscope
from the o utput of a two-input AND, OR, NAND, or NOR logic gate. You
can specify time constraints and signal threshold levels as part of the triggering
condition. This trigger is useful for digital logic troubleshooting.
Pattern Trigger Conditions
Push the Trigger Menu button, and then push the Type bottom screen button to
select Logic. The next table lists the menu items when the trigger Type is set to
Logic
, and the Class is set to Pattern.
Bottom
Side
Description
Input 1 Source Sets the pattern trigger signal input 1 source.
Logic
Sets the signal logic for input 1. H = high true, L = low true.
Input 2 Source Sets the pattern trigger signal input 2 source.
Define Inputs
Logic
Sets the signal logic for input 2. H = high true, L = low true.
Define Logic AND, OR, NAND, NOR Sets which logic function to apply to the input signals.
Goes True
G
oes False
Triggers the oscilloscope when the logic condition is true or false.
Is True < N
Is True > N
T
riggers the oscilloscope when the input logic condition is true for a time
period greater than or less than time period N.
Is True = N
Trigger When
Is True 0 N
Triggers the oscilloscope when the input logic condition is true for a time
period equal to or not equal to time period N within a ±5% tolerance.
100 TDS3000C Series Oscilloscope User Manual
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