Figure 3-26: Measurement Of Trigger Sensitivity - 50 Mhz Results Shown - Tektronix MSO70000 Series Technical Reference

Performance Tests (MSO70000/C Series, DSA/DPO70000B/C Series, and DPO7000 Series)
3–92

Figure 3-26: Measurement of trigger sensitivity - 50 MHz results shown

c. ≥ 4 GHz models: Check B trigger system for stable triggering at limits:
Do the following subparts in the order listed.
From the button bar touch Trig, select the A Event tab, and set the
Source to Line.
Select the A->B Seq tab, and touch the A then B Trig After Time
button.
Select the B Event tab, and touch the Set To 50% button.
CHECK that a stable trigger is obtained for the test waveform for both
the positive and negative slopes of the waveform. Use the Trigger
Level knob to stabilize the A trigger. Touch Level and use the keypad
or the multipurpose knob/Fine button to stabilize the B trigger. Touch
one of the Slope buttons to switch between trigger slopes. (See
Figure 3-26 on page 3-92.)
Enter pass or fail in the test record.
Leave the Delayed trigger system triggered on the positive slope of
the waveform before continuing to the next step. Also, return to the
A trigger: select the A->B Seq tab and touch the A->B Sequence A
Only button. Then select the A Event tab.
Select the A Event tab, and set the Source to CH1.
Press the X (Close button).
MSO70000/C, DSA70000B/C, DPO7000B/C, DPO7000, MSO5000, DPO5000 Series