HP 16550A User Reference page 144

The Waveform Menu
Sample Period Display (Timing only)
Timing waveforms are reconstructed relevant to the sample period. The
shorter sample period puts more sample points on the waveform for a more
accurate reconstruction but also fills memory quicker.
If the sec/Div is changed resulting in a change in the next sample period, you
must run the analyzer again before the current sample period display is
updated.
- ----------- ------------- ----------- --------------- THRESHOLD
t t t t t t t t t t
0 0 0 1 1 1 0 0 1 1
Sample Points
t
SAMPLE POINTS
I
1 SAMPLE RE SUL TS
C
0 REPRESENTS BELOW THRESHOLD l
SAMPLE RESULTS
C
1 REPRESENTS ABOVE THRESHOLD)
TIMI MG ANALYZER DISPLAY RECONSTRUCTED
FROM SAMPLE RESULTS
LAB00003
7-11