EXFO PSO-100 Series Optical Sampling Oscilloscopes - Manual (Page 122)

Measurement Definitions
114 PSO-100
Eye Height
Eye Height
The eye height (EH) is a measurement of the vertical opening of an eye
diagram and it is defined as:
Eye Amplitude
The eye amplitude (EA) is simply defined as the difference between the
one and zero levels according to:
Eye Opening Factor
The eye-opening factor is a measurement of the vertical eye opening
according to:
EH P
one
3 σ
one
– ( ) P
zero
3 σ
zero
+ ( ) – =
EA P
one
P
zero
– =
EOF
P
one
σ
one
– ( ) P
zero
σ
zero
+ ( ) –
P
one
P
zero
–
---------------------------------------------------------------------------- =