Keysight Technologies 3458A Guide D'utilisation page 494

E High Resolution Digitizing With the 3458A
Errors in Measurements
The flexibility of the 3458A helps you avoid or compensate for many of the
measurement errors that can occur in the digitizing process. Errors associated
with digitizing can be grouped by their amplitude error and time error
contributions to the total error in the measurement. For dynamic signals, time
errors result in amplitude error. Fortunately, most time dependent measurements
are differential and any absolute timing errors are calibrated out of the
measurement. A close look at the block diagram of the 3458A reveals the sources
of error in the measurement, summarized in
Broadly speaking, errors that creep into digitizing measurements are evident in
both the amplitude and time axes.
For amplitude, the errors are:
1 Quantization error
2 Missing code
3 Non-linearity
4 Noise
5 Bandwidth
6 Amplitude accuracy
On the time axes, the error factors are:
1 Timebase reference jitter
2 Trigger uncertainty
3 Trigger accuracy
4 Trigger latency
5 Aperture width
6 Aperture jitter
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Figure E-11.
Keysight 3458A User's Guide