Tektronix MSO70000 Series Technical Reference page 54

Specifications (MSO70000/C Series, DSA/DPO70000B/C Series, and DPO7000 Series)
Table 1-2: Horizontal and acquisition system specifications, all MSO70000/C, DSA/DPO70000B/C, and DPO7000
Series models (cont.)
Characteristic
Delta time measurement
accuracy, ≥ 4 GHz models
MSO/DSA/DPO72004C at
50 GS/s, BWE off
MSO/DSA/DPO71604C at
50 GS/s, BWE off
1–38
Description
The formula to calculate the maximum delta-time measurement accuracy (DTA
instrument setting and input signal is given below (assumes insignificant signal content above
Nyquist and insignificant error due to aliasing, overdrive recovery and overdrive interpolation):
= slew rate around 1st point in measurement (1
SR
1
SR = slew rate around 2nd point in measurement (2
2
F = 1.3 for instrument bandwidth ≤9 GHz; 1.5 for instrument bandwidth ≥10 GHz
N
N = typical input-referred noise spec (volts rms)
typ
TBA = timebase accuracy (1.5 ppm)
t = delta-time measurement (seconds)
reading
Peak-peak based on statistical accumulation of 1000 waveforms.
RMS is guaranteed regardless of data-gathering duration.
The term under the square-root sign is the stability and is due to time interval error (TIE). The
errors due to this term occur throughout a single-shot measurement. The second term is due to
both the absolute center-frequency accuracy and the center-frequency stability of the timebase
and varies between multiple single-shot measurements over the observation interval (the
amount of time from the first single-shot measurement to the final single-shot measurement).
The observation interval may not exceed 1 year.
Test frequency = 0.621 × bandwidth. Test amplitude = 80% full scale.
1.280 ps rms, 12.80 ps
p-p
1.172 ps rms, 11.72 ps pk-pk, <10 ns pulse width, 50 mV/div, amplitude = 80% FS
1.186 ps rms, 11.86 ps pk-pk, <10 ns pulse width, 100 mV/div, amplitude = 80% FS
1.280 ps rms, 12.80 ps pk-pk, <10 ns pulse width, 10 mV/div, amplitude = 80% FS
1.172 ps rms, 11.72 ps pk-pk, <10 ns pulse width, 50 mV/div, amplitude = 80% FS
1.186 ps rms, 11.86 ps pk-pk, <10 ns pulse width, 100 mV/div, amplitude = 80% FS
MSO70000/C, DSA70000B/C, DPO7000B/C, DPO7000, MSO5000, DPO5000 Series
edge)
st
nd
, <10 ns pulse width, 10 mV/div, amplitude = 80% FS
) for a given
max
edge)