Appendix B: Algorithms
TDS 684A, TDS 744A, & TDS 784A User Manual B–5
Measurement Algorithms
The automated measurements are defined and calculated as follows.
 =  – 
The arithmetic area for one waveform. Remember that one waveform is not
necessarily equal to one cycle. For cyclical data you may prefer to use the cycle
area rather than the arithmetic area.
if  =  then return the (interpolated) value at .
Otherwise,
= 

()dt
For details of the integration algorithm, see page B–12.
Amplitude (voltage) measurement. The area over one waveform cycle. For data
not cyclical, you might prefer to use the Area measurement.
If  =  then return the (interpolated) value at .
= 

()dt
For details of the integration algorithm, see page B–12.
Timing measurement. The duration of a burst.
1. Find  on the waveform. This is .
2. Find the last  (begin the search at  and search toward
). This is . This could be a different value from
.
3. Compute  =  – 

Amplitude

Area

Cycle Area

Burst Width