Agilent Technologies ESA-E Series User Manual page 34

Making Measurements
Making Return Loss Measurements
– RL
----------
20
1 + 10
VSWR = -----------------------
– RL
----------
20
1 10 –
Where: RL is the measured return loss value.
VSWR is sometimes stated as a ratio. For example: 1.2:1 "one point two to one"
VSWR. The first number is the VSWR value taken from the table or calculated
using the formula. The second number is always 1.
28 Chapter 3