Tektronix CSA8000B - Manual (Page 324)

Measurement Reference Parameters and Methods
B- 62 CSA8000B & TDS8000B User Manual
The following parameters are used when deriving measurements on RZ
waveforms.
Low
High
Eye aperture
High reference
Low reference
Mid
reference
Figure B- 8: RZ eye- aperture parameters
NRZ Sources
The automatic measurement system uses the following levels when measuring
NRZ source waveforms. For the NRZ measurements, and their definitions that
use the levels described here, see page B--37.
RZ Eye-Aperture
Parameters