Tektronix DPO7254C Printable Help

7. In the Pulse Width drop-down list:
■
Select Inside to trigger on pulses that fall within the specified range.
■
Select Outside to trigger on pulses that are outside the range.
8. You can also Trigger on a logic-qualified pulse using the Trigger if Width "Logic" selection. When the instrument detects that
a width trigger condition has occurred, it checks the logical state of two other available channels and triggers only if their
conditions are met. Each channel can have a value of high (H), low (L), or "don't care" (X). A value is considered high if the
channel input voltage is greater than the specified threshold voltage; a value is considered low if the channel input voltage is
less than the specified threshold voltage. Use the "don't care" selection for any channels that will not be used as part of the
pattern.
9. Click in the Level entry box; then use the multipurpose knob, pop-up keypad, or front-panel Level control to set the trigger
level.
10. You can set the mode and holdoff for all standard trigger types. Refer to trigger mode and set holdoff to learn more about
trigger mode and holdoff.
Trigger on a pulse timeout
Use the following procedure to detect and trigger on pulses longer than a specified time. The instrument will trigger at the end of
the timeout period.
1. Push the front-panel Advanced button.
2. In the Trigger control window, Open the A Event tab.
3. Select Timeout from the Trigger Type drop-down list.
4. Specify the trigger source. Click Source; then select a channel from the drop-down list.
5. To set the trigger timeout level, click in the Level entry box; then use the multipurpose knob or pop-up keypad to enter the
voltage level.
NOTE. You can set the level to a value appropriate to either the TTL or ECL logic families by clicking TTL or ECL on the
Level pop-up keypad.
6. To set the timeout timer, click Timer, and then use the multipurpose knob or pop-up keypad to set the time.
7. To set the pulse threshold, click one of the following:
■
Stay High. Triggers if the signal stays higher than the trigger level for longer than the timeout (Timer) value.
■
Stay Low. Triggers if the signal stays lower than the trigger level for longer than the timeout (Timer) value.
■
Either. Triggers if the signal stays lower or stays higher than the trigger level for longer than the timeout (Timer) value.
8. You can also Trigger on a logic-qualified pulse using the Trigger if Timeout "Logic" selection. When the instrument detects
that a timeout condition has occurred, it checks the logical state of two other available channels and triggers only if their
conditions are met. Each channel can have a value of high (H), low (L), or "don't care" (X). A value is considered high if the
channel input voltage is greater than the specified threshold voltage; a value is considered low if the channel input voltage is
less than the specified threshold voltage. Use the "don't care" selection for any channels that will not be used as part of the
pattern.
9. You can set the mode and holdoff for all standard trigger types. Refer to trigger mode and set holdoff to learn more about
trigger mode and holdoff.
How to ?
DPO70000SX, MSO/DPO70000DX, MSO/DPO70000C, DPO7000C, and MSO/DPO5000B Series 627

Tektronix DPO7254C Specifications

General

Brand	Tektronix
Model	DPO7254C
Category	Test Equipment
Language	English