Tektronix DPO2304SX, Печатная инструкция

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Trigger on a glitch
Use the following procedure to detect and trigger on a glitch, or to ignore a glitch:
1. Push the front-panel Advanced button.
2. In the Trigger control window, open the A Event tab.
3. Select Glitch from the Trigger Type drop-down list.
4. Specify the trigger source. Click Source; then select a channel from the drop-down list.
5. Click a Polarity button to specify the glitch polarity:
■ Pos. Looks at positive-going pulses.
■ Neg. Looks at negative-going pulses.
■ Either. Looks at both positive and negative pulses.
6. To specify the width of the glitch, click in the Width entry box; then set the glitch width using the multipurpose knob or
keypad.
7. Select from the Glitch Width drop-down list to specify whether to trigger on glitches narrower or greater than the width you
specify:
■ Less Than. Trigger only on narrower pulses.
■ Greater Than. Trigger only on wider pulses.
8. Click in the Level entry box; then use the multipurpose knob, keypad, or front-panel Trigger Level knob to set the level that
the glitch must cross to be recognized by the instrument. You can also set the level to a value appropriate to either the TTL
or ECL logic families by selecting Logic in the Trigger if Glitch drop-down list.
9. You can also Trigger on a logic-qualified pulse using the Trigger if Glitch "Logic" selection. When the instrument detects that
a glitch 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.
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 runt pulse
Use the following procedure to detect and trigger on a runt pulse. The instrument can look for positive or negative runt pulses.
These pulses can also be qualified by time or by the logical state of other channels.
1. Push the front-panel Advanced button.
2. In the Trigger control window, open the A Event tab.
3. Select Runt from the Trigger Type drop-down list.
4. Specify the trigger source. Click Source; then select a channel from the drop-down list.
How to ?
DPO70000SX, MSO/DPO70000DX, MSO/DPO70000C, DPO7000C, and MSO/DPO5000B Series 625