Specifications

12
Page 23
安捷倫科技高頻元件量測研討會
Feb.23, 2006
What is Normalization?
• Built-in Firmware
• Removes Test Fixture Error
• Increases Accuracy
• Allows Customer to Simulate
his own system risetime
Originally Licensed from Stanford
University (Bracewell
Transform)
Critical for Rambus!
TDR normalization (As VNA’s Calibration)
Page 24
安捷倫科技高頻元件量測研討會
Feb.23, 2006
•First part of the calibration removes systematic errors due to trigger
coupling, channel crosstalk, and reflections from cables and
connectors by measuring the response with the DUT replaced by a
short circuit.
•The second part of the calibration generates a digital filter. The filter
removes errors by attenuating or amplifying and phase-shifting
components of the frequency response as necessary.
•For TDR, this is done by replacing the DUT with a termination having
an impedance equal to the characteristic impedance of the
transmission line, all of the energy that reaches it will be absorbed.
The procedure of TDR Normalization