Table 1-6: Delta Time Measurement - Tektronix TDS 500D Technical Reference

Performance Tests
1–58
TDS 500D, TDS 600C, TDS 700D & TDS 714L Performance Verification and Specifications
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H Press MEASURE ©Select Measurmnt for Ch1 (main menu)
©Positive Width (side menu).
H Press Statistics ©Statistics OFF (side menu) to reset the statistics,
then press ©Statistics Mean/StdDev (side menu).
H Press Statistics Weights (side menu). On the keypad press 1000,
then ENTER.
H Press RUN/STOP button to start the acquisitions.
H Wait about 30 seconds.
H Press RUN/STOP button to freeze the display.
H Record the mean, m (value).
H Press Statistics Min/Max (side menu) to display those values.
H Calculate the difference of the Max minus the mean.
H Calculate the difference of the mean minus the Min.
H Both differences must be less than or equal to the Delta-time
accuracy limit shown in Table 1–6 for your oscilloscope.
Table 1–6: Delta time measurement
Oscilloscope type
TDS520D, TDS540D, TDS724D,
TDS754D
TDS580D, TDS784D
TDS794D
TDS654C
TDS680C, TDS684C
TDS694C
e. Repeat for all other channels:
H Note the vertical scale setting of the channel just confirmed.
H Press WAVEFORM OFF to remove the channel just confirmed
from display.
H Press the front-panel button that corresponds to the channel you are
to confirm.
H Set vertical SCALE to the setting noted in step e, first bullet.
Pulse rise time range Delta time accuracy limit
v2 ns v0.075 ns
v900 ps v0.038 ns
v0.038 ns
300 ps – 1 ns
v150 ps v0.040 ns
v700 ps v0.040 ns
v0.015 ns
50 ps – 400 ps