Complex Impedance; Two Port Measurements; Two Port Calibration; Transmission Measurements - Agilent Technologies 87512A Operation And Service Manual

Transmission/reflection test kit

Table of Contents

Reflection Coefficient/Return Loss

After performing a one port calibration, connect the test device to the TEST PORT. Then,

select the A/R or S

measurement function . The re ection coecient is displayed by

selecting the LIN MAG display function. The return loss is displayed by selecting the LOG

MAG display function.

Complex Impedance

Complex impedance measurements are made by the analyzer's CONVERSION function to

convert the re ection coecient to the impedance parameter. Refer to the analyzer's manual.

The 87512A/B should be calibrated for transmission measurements using the internal

calibration function of the analyzer. The calibration function requires the standards used to

be attached in place of a test device during calibration. Refer to the analyzer's manual for a

complete description of the calibration procedure.

By using the 87512A/B transmission calibration and the ratio measurement functions, the

gain or loss of the device under test can be displayed directly in decibels or linear ratio units.

The calibration function removes the eects of the 87512A/B and the connecting cables. The

analyzer measurement functions B/R or S

calculates the gain or loss of the test device. The

test device is connected between the TEST PORT and the analyzer B port using the exible

cable included in the test set.

Operation

3-3

Table of Contents

87512b