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Performance Tests
2-46
TDS5000B Series Specifications and Performance Verification
a. Display the test signal: Set the output of the sine wave generator for a
100 MHz, five-division sine wave on the screen; then press PUSH TO
SET 50%.
b. Set the trigger mode: Press the Trigger MODE button to toggle it to
NORMAL.
c. Set upper and lower limits that ensure triggering: See Figure 2--19 on
page 2--47.
H Press the front-panel ADVANCED button, and select the AEvent
tab; then select width triggering by clicking the Width button.
H Click the Trig When button, and select Inside limits.
H Click Upper Limit, and use the keyboard to set the upper limit to
10 ns: press 10, then n,andENTER.
H Click Lower Limit, and use the keypad to set the lower limit to
2ns.
d. Change limits until triggering stops:
H Press PUSH TO SET 50%.
H While implementing the following substeps, monitor the display (it
will stop acquiring) and the front-panel light TRIG’D (it will
extinguish) to determine when triggering is lost. Click Close.
H Click Lower Limit.
H Use the multipurpose knob to increase the Lower Limit readout until
triggering is lost.
H CHECK that the Lower Limit readout, after the oscilloscope loses
triggering, is within 3.5 ns to 6.5 ns, inclusive.
H Enter the time in the test record.
H Use the keypad to return the Lower Limit to 2nsand reestablish
triggering.
H Click Upper Limit; then use the multipurpose knob to slowly
decrease the Upper Limit readout until triggering is lost.
H CHECK that the Upper Limit readout, after the oscilloscope loses
triggering, is within 3.5 ns to 6.5 ns, inclusive.
H Enter the time in the test record.