Performance Tests
1–62
TDS 500D, TDS 600C, TDS 700D & TDS 714L Performance Verification and Specifications
3. Confirm the trigger system is within time-accuracy limits for pulse-glitch or
pulse-width triggering (time range >520 ns):
a. Set upper and lower limits that ensure triggering at 250 kHz:
H Press the side-menu button Upper Limit. Use the keyboard to set
the upper limit to 4 ms.
H Press the side-menu button Lower Limit. Use the keypad to set the
lower limit to 500 ns.
b. Display the test signal:
H Set the horizontal SCALE to 5 ms.
H 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).
H Press SET LEVEL TO 50%.
c. Check against limits: Do the following subparts in the order listed.
H Press the side-menu button Lower Limit.
H Use the general purpose knob to increase Lower Limit readout until
triggering is lost.
H CHECK that the Lower Limit readout, after the oscilloscope stops
triggering, is within 1.9 ms to 2.1 ms, inclusive.
H Enter time on test record.
H Use the keypad to return the Lower Limit to 500 ns and reestablish
triggering.
H Press the side-menu button Upper Limit; then use the general
purpose knob to slowly decrease the Upper Limit readout until
triggering stops.
H CHECK that the Upper Limit readout, after the oscilloscope loses
triggering, is within 1.9 ms to 2.1 ms, inclusive.
H Enter time on test record.
4. Disconnect the hookup: Disconnect the cable from the generator output at
the input connector of CH 1.
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