Tektronix TDS 500C User Manual

Appendix B: Algorithms

TDS 500C, TDS 600B, & TDS 700C User Manual

Timing measurement. The ratio of the negative pulse width to the signal period
expressed as a percentage.

NegativeWidth is defined in Negative Width, below.

If 

Period = 0 or undefined then return an error.

NegativeDutyCycle = 

NegativeWidth

Period

  100%

Amplitude (voltage) measurement.

NegativeOvershoot = 

Low * Min

Amplitude

  100%

Note that this value should never be negative (unless High or Low are set
out-of-range).

Timing measurement. The distance (time) between 

MidRef (default = 50%)

amplitude points of a negative pulse.

If 

MCross1Polarity = ‘–’

then

NegativeWidth = (MCross2 – MCross1)

else

NegativeWidth = (MCross3 – MCross2)

Waveform[Start]

See Mean dBm on page B–10.

Amplitude measurement. The absolute difference between the maximum and
minimum amplitude.

PeaktoPeak = Max – Min