Performance Tests
TDS5000B Series Specificationsand Performance Verification 2-43
HIf you aretesting a TDS5054BE instrument, set the Bandwidth to
150 MHz on all channels.(All other models are tested at full
bandwidth.)
HFrom the toolbar,click the Horiz button, and select the Acquisition
tab. Under SamplingMode, press the RT (Real Time Only) button.
HSet the horizontalS CALE to 10 ns/division. The pulse width should
be approximately6 ns. For the TDS5054BE, set the horizontal scale
to 50 ns/division, and press the ZOOM button.
HAdjust the pulse amplitude and the verticalscale and position of the
instrument as necessaryto obtain about 5 divisions of positive pulse
amplitude. Ensure that the positive pulse amplitude is greaterthan
200 mV.
d. Set up for statistics measurements:
HReadjust the TriggerLEVEL knob so that the trigger level is about
50% of the rising edge of the positive pulse. Note the voltage of the
trigger level—thisvoltage will be used in the following steps.
HPressRUN/STOP but ton to freeze the display.
HClick MEAS, and then select the Time tab to bring up the Time
Measurements menu.
HClick the Positive Width button.
HClick Setup Statistics.Click the Measurement Statistics All button,
andthenclickReset to reset the statistics.
HClick Weightn=. On the keypad press 1000 and ENTER; then click
Setup.
HClick Setup Ref Levs.
HClick Units Absolute.
HSet Mid Ref to the voltage of the trigger level noted previously in
this step. (This level is about 50% of the rising edge of the positive
pulse.)
HClick Setup, andthen click Close.
HPressthe RUN/STOP button to start the acquisitions.
HWaitapproximately 30 seconds.
HPressthe RUN/STOP button to freeze the display.
HRecord all statisticsvalues.