Tektronix MSO70000C/DX Technical Reference page 268

Performance verification (MSO/DPO70000C, MSO/DPO70000DX, and DPO7000C series)
256
3. Confirm the trigger system is within time-accuracy limits for pulse-glitch or
pulse-width triggering (time range≥1 μs):
a. Set upper and lower limits that ensure triggering at 250 kHz:
■ Touch Upper Limit. Use the keypad to set the upper limit to 4 μs.
■ Touch Lower Limit. Use the keypad to set the lower limit to 500 ns.
b. Display the test signal:
■ < 4 GHz models: Set the Horizontal Scale to 5 μs.
■ ≥ 4 GHz models: Set the Horizontal Scale to 4 μs.
■ Set the Vertical Scale to 100 mV.
■ Set the output of the sine wave generator for a 250 kHz, five-division
sine wave on screen. Set the Vertical Scale to 20 mV (the waveform
will overdrive the display).
■ Press PUSH-SET 50%.
c. Check against limits: Do the following subparts in the order listed.
■ ≥ 4 GHz models: Press the multipurpose knobs until Fine is on.
■ Use the multipurpose knob to increase the Lower Limit readout
until triggering is lost.
■ CHECK that the Lower Limit readout, after the instrument stops
triggering, is within the following limits:
Model
< 4 GHz models
≥ 4 GHz models
■ Enter the time on the test record.
■ Use the keypad to return the Lower Limit to 500 ns and reestablish
triggering.
■ Touch Upper Limit; then use the multipurpose knob to slowly
decrease the Upper Limit readout until triggering stops.
■ CHECK that the Upper Limit readout, after the instrument loses
triggering, is within the following limits:
Model
< 4 GHz models
≥ 4 GHz models
■ Enter the time on the test record.
4. Disconnect the hookup: Disconnect the equipment from the instrument.
MSO70000C/DX, DPO70000C/DX, DPO7000C, MSO5000/B, DPO5000/B Series
Limit
1.9 μs to 2.1 μs, inclusive
1.9 μs to 2.1 μs, inclusive
Limit
1.9 μs to 2.1 μs, inclusive
1.9 μs to 2.1 μs, inclusive