LeCroy DDA 7 Zi series, Operator'S Manual

Page: 315 / 544

Operator's Manual
WP700Zi-OM-E-RevA
314
The low and high ‘nT’ values for performing the calculation must be provided by the user through the associated
measurement configuration options. The value shown is in units of percent. The measurement calculation is
compliant with the definition of Pit Resolution as defined by IEC 13549:1993 Section 15.3.1.
Display Options
ORM parameter calculations can be displayed, histogrammed, and trended in a variety of ways. The table
provides a concise description of the value or values displayed using each approach.
DISPLAY TYPE VALUE DISPLAYED
Parameter Statistics Off Single value of the pit resolution for the last acquisition
Parameter Statistics On
Overall average, minimum, maximum, and sigma of the single pit resolution value
calculated per acquisition for all acquisitions since the last CLEAR SWEEPS
operation.
Histogram Function
Histogram of the single pit resolution value calculated per acquisition for all
acquisitions since the last CLEAR SWEEPS operation.
Trend Function
Trend of the single pit resolution value calculated per acquisition for all acquisitions
since the last CLEAR SWEEPS operation.
Example
Consider the following persistence plots. In the first, the amplitude
measurement cursor reads the difference between the 3T top and
base: 47.3 mV.
In the second, the cursor reads the difference between the 11T top
and base: 67.3 mV.
Therefore, the resolution is:
This is the same waveform with the parameters calculated
automatically.
1. pres 3T paa / 11T paa
2. paa 3T
3. paa 11T
P1 contains the ratio of P2 to P3 in percent.