Specifications

26
Innovative
Applications
Powerful, fast and
accurate automatic
fixture removal (AFR)
(Option 007)
Powerful AFR features can handle a variety of measurement needs
• Single ended and differential devices
• Left and right side of fixture can be asymmetrical
• Thru lengths can be specified or determined from open or short measurements
• Band-pass time-domain mode for band-limited devices
• Extrapolation to match DUT frequency range
• Power correction compensates for fixture loss versus frequency
• De-embed files can be saved in a variety of formats for later use in PNA, ADS, and PLTS
AFR is the fastest way to de-embed a fixture from the measurement
Yesterday without AFR
Complicated modeling in EM simulation software or multiple calibration standards fabricated
on board were needed to characterize and remove a fixture.
Today with AFR
First calibrate in coax with the reference planes at the inputs to your fixture. Then measure
one or more standards designed as a replica of the fixture’s 2-port thru, or fixture half termi-
nated with an open or short.
Or, even faster: just measure the actual fixture itself before the DUT is installed for the open
standard. AFR automatically characterizes and removes your fixture from the measurement.
Measurement Challenge:
Many of today’s devices do not
have coaxial connectors and are
put in fixtures in order to mea-
sure them in a coaxial environ-
ment. Accurately removing the
effects of the fixture is required
to get a good measurement of
the device under test (DUT).
A five-step wizard guides you through the process to characterize
your fixture and remove it from your measurement.
DUT and Fixture
Thru Standard
Open or Short Standard
coax
input
coax
input
coax
input
coax
input
coax
input
coax
input
right-half fixture
right-half fixture
right-half fixture
left-half fixture
left-half fixture
left-half fixture