Appendix B: Algorithms
B–10
TDS 500D, TDS 600B, & TDS 700D User Manual
0% (lowest) voltage reference value calculated. (See High, Low on page B–1.)
Using the min-max measurement technique:
=
Amplitude (voltage) measurement. The maximum voltage. Typically the most
positive peak voltage.
Examine all samples from to inclusive, and set
equal to the greatest magnitude value found.
The arithmetic mean for one waveform. Remember that one waveform is not
necessarily equal to one cycle. For cyclical data you may prefer to use the cycle
mean rather than the arithmetic mean.
If = then return the (interpolated) value at .
Otherwise,
=
ŕ
()dt
( * )
For details of the integration algorithm, see page B–15.
The normalized mean. If the waveform source is from an optical probe, this can
give average optical power.
Mean dBm =
Amplitude (voltage) measurement. The minimum amplitude. Typically the most
negative peak voltage.
Examine all samples from Start to End inclusive, and set Min
equal to the smallest magnitude Waveform[ ] value found.
Low
Maximum
Mean
Mean dBm
Minimum
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