Performance Tests
TDS 500C, TDS 600B & TDS 700C Performance Verification and Specifications 1–47
b. Set the trigger mode: Press TRIGGER MENU. Now press the
main-menu button Mode & Holdoff; then press the side-menu button
Normal.
c. Set upper and lower limits that ensure triggering: See Figure 1–15.
HPress the main-menu button Type; then repeatedly press the same
button until Pulse is highlighted in the menu that pops up.
HPress the main-menu button Class; then repeatedly press the same
button until Width is highlighted in the menu that pops up.
HPress the main-menu button Trig When; then press the side-menu
button Within Limits.
HPress the side-menu button Upper Limit. Use the keyboard to set
the upper limit to 10 ns: press 10, then SHIFT, then n, and ENTER.
HPress the side-menu button Lower Limit. Use the keypad to set the
lower limit to 2 ns.
d. Change limits until triggering stops:
HPress SET LEVEL TO 50%.
HWhile doing the following subparts, monitor the display (it will stop
acquiring) and the front-panel light TRIG (it will extinguish) to
determine when triggering is lost.
HPress the side-menu button Lower Limit.
HUse the general purpose knob to increase the Lower Limit readout
until triggering is lost.
HCHECK that the Lower Limit readout, after the oscilloscope loses
triggering, is within 3.5 ns to 6.5 ns, inclusive.
HEnter time on test record.
HUse the keypad to return the Lower Limit to 2 ns and reestablish
triggering.
HPress the side-menu button Upper Limit; then use the general
purpose knob to slowly decrease the Upper Limit readout until
triggering is lost.
HCHECK that the Upper Limit readout, after the oscilloscope loses
triggering, is within 3.5 ns to 6.5 ns, inclusive.
HEnter time on test record.