Table 3 13: Measurement Parameters - Tektronix 11801C User Manual

11801C User Manual

Table 3 13: Measurement Parameters

SW HW Stat Name
Baseline
n n
n
Data Interval
n n
Dispersion
n
Distal
n n n
Filtering
n
Harmonic
n
Number
Histogram
n
Points
Jitter Level
n
Definition
The 0% level on which proximal, mesial,
reference level, and distal levels are
based. When tracking mode is Both or
Baseline, the 11801C repeatedly deter
mines the baseline and you cannot ad
just it. When tracking mode is Off or
Topline, you can set baseline or you can
have the 11801C set it once by touching
the Setup selector.
Determines whether the measurement
will be taken from one cycle of the trace
or the entire measurement zone.
Selects the peak to peak or RMSD
(standard deviation) statistic for the
Noise and Jitter measurements. The
Dispersion parameter does not affect
the Signal to Noise Ratio measurement.
The distal (most distant from the origin)
voltage level. Rise and fall times are
measured between the proximal and
distal voltage levels, which are typically
10% and 90% of the baseline to topline
voltages. May be set as a relative (per
cent), an absolute (volts) value, or a
delta voltage from the baseline or top
line.
The number of successive samples that
must cross a threshold level before the
transition is considered valid. Noisy sig
nals will be most affected by filtering.
For frequency domain measurements;
used with the harmonic search mode.
(See Search Mode, below.)
The number of points in the histograms
taken for Jitter and Noise measure
ments. This parameter cannot be ad
justed, but appears in the Jitter and
Noise pop up menus as Hist Pts.
The level at which the Jitter measure
ment is taken, in volts. This parameter
cannot be adjusted, but appears in the
Jitter pop up menu as Jitt Lvl. This pa
rameter will be affected by the Jitter
Location setting.
Measurements
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