Tektronix DPO7254C Printable Help

Pattern triggers
A pattern trigger occurs when the inputs to the selected logic function cause the function to become True or False. When you use
a pattern trigger, you define:
■
The precondition for each logic input: logic high, low, or "don't care"; the logic inputs are the instrument channels
■
The Boolean logic function: AND, NAND, OR, or NOR
■
The condition for triggering: the Boolean function becomes True (logic high) or False (logic low), and whether the True
condition is time qualified
Pattern trigger logic choices are summarized in the following table.
Pattern State Definition
1
,
2
AND
Clocked AND
If all the preconditions selected for the logic inputs
3
are TRUE,
then the instrument triggers.
NAND Clocked NAND
If not all of the preconditions selected for the logic inputs
4
are
TRUE, then the instrument triggers.
OR
Clocked OR
If any of the preconditions selected for the logic inputs
5
are
TRUE, then the instrument triggers.
NOR
Clocked NOR
If none of the preconditions selected for the logic inputs
6
are
TRUE, then the instrument triggers.
Pattern triggers
A pattern trigger occurs when the inputs to the selected logic function cause the function to become True or False. When you use
a pattern trigger, you define:
■
The precondition for each logic input: logic high, low, or "don't care"; the logic inputs are the instrument channels
■
The Boolean logic function: AND, NAND, OR, or NOR
■
The condition for triggering: the Boolean function becomes True (logic high) or False (logic low), and whether the True
condition is time qualified
Pattern trigger logic choices are summarized in the following table.
1
For state triggers, the definition must be met at the time the clock input changes state
2
The definitions given here are correct for the Goes TRUE setting in the Trigger When menu. If that menu is set to Goes False, swap the definition for AND with that for
NAND and for OR with NOR for both pattern and state types.
3
The logic inputs are channels 1, 2, 3, and 4 when using Pattern triggers. For State triggers, channel 4 becomes the clock input, leaving the remaining channels as logic
inputs.
4
The logic inputs are channels 1, 2, 3, and 4 when using Pattern triggers. For State triggers, channel 4 becomes the clock input, leaving the remaining channels as logic
inputs.
5
The logic inputs are channels 1, 2, 3, and 4 when using Pattern triggers. For State triggers, channel 4 becomes the clock input, leaving the remaining channels as logic
inputs.
6
The logic inputs are channels 1, 2, 3, and 4 when using Pattern triggers. For State triggers, channel 4 becomes the clock input, leaving the remaining channels as logic
inputs.
How to ?
DPO70000SX, MSO/DPO70000DX, MSO/DPO70000C, DPO7000C, and MSO/DPO5000B Series 629

Tektronix DPO7254C Specifications

General

Bandwidth	2.5 GHz
Channels	4
Display Size	12.1 inches
Input Coupling	AC, DC, GND
Vertical Sensitivity	1 mV/div to 10 V/div
Power Supply	100-240 VAC, 50/60 Hz
Sample Rate	40 GS/s
Record Length	50 Mpoints
Vertical Resolution	8-bit
Display Type	XGA LCD
Trigger Modes	Edge, Pulse, Runt, Timeout, Logic
Interface	USB, GPIB, Ethernet
Input Impedance	1 MΩ ±1% with 13 pF ±2 pF; 50 Ω ±1%
Input Voltage Range	1 MΩ: 300 Vrms, 50 Ω: 5 Vrms