Anritsu MA24 A Series, Operation Manual, Page: 43 / 88

MA24xxA/B/D, MA2400xA OM PN: 10585-00004 Rev. U 4-3
Chapter 4 — Performance Verification 4-3 SWR Performance
Measurement
1. Follow the manufacturer’s S
11
(or return loss) calibration
procedure to perform calibration on the network analyzer.
2. Connect the power sensor to the network analyzer test port, and
measure the power sensor input match.
Usually, network analyzers measure match in terms of return
loss in dB. The return loss to magnitude of reflection coefficient
conversion equations are:
3. Record the measured data in the applicable test records in
Section A-4 of Appendix A .
If the measured reflection coefficient plus measurement
uncertainty is larger than the specification limit, the power
sensor may be defective.
Note
There are no user serviceable parts inside the power
sensors. Contact your local Anritsu Service Center and
return the power sensor with a detailed description of the
observed problems

10
RL 20

=
RL 20 log

– =
where
RL Return Loss in dB =

Reflection coefficient magnitude =