Tektronix CSA7404B - Page 371

Appendix B: Automatic Measurements Supported
CSA7000B Series & TDS7000B Series Instruments User Manual
B-7
TCross
1
TCross
2
PBase
PTop
PCross
1
PCross
2
Eye
Aperture
Figure B- 2: Eye-diagram and optical values
The P values include the mean and standard deviation of the vertical location of
PT op and PBase. These areas are used with a specified sample size to statisti-
cally measure the following values:
H PTop
mean
, the mean value of PTop
H PTop
sigma
, the standard deviation of PTop
H PTop
pk-pk
, The vertical peak-to-peak deviation of PTop
H PBase
mean
, the mean value of PBase within the Eye Aperture
1
H PBase
sigma
, the standard deviation of PBase within the Eye Aperture
1
H PBase
pk-pk
, the vertical peak-to-peak deviation of PBase
1
The Eye Aperture defaults to the center 20% of the interval from TCross
1
to TCross
2
.
P Values