Tektronix DSA70000D Series - Missing or Out-Of-Range Samples

Oscilloscope Reference Missing or out-of-range samples
Choosing Minima or Maxima to Use for Envelope Measurements
2. If the pair > MidRef, use the minima, else use maxima.
If all pairs straddle MidRef, use maxima. See the figure.
The Burst Width measurement always uses both maxima and minima to determine crossings.
Missing or out-of-range samples
If some sample s in the waveform are missing or off-scale, the measurements will linearly interpolate
between known samples to make an appropriate guess as to the sample value. Missing samples at the ends
of the measurement record will be assumed to have the va lue of the neares t known sample.
DSA/DPO70000D, MSO/DPO/DSA70000C, DPO7000C, and MSO/DPO5000 Series 739