User Manual

Calibrating Output Power

68P09255A57-2

Aug 2002

SC4812ET Optimization/ATP Manual Software Release R16.1.x.x

PRELIMINARY

G-4

Table G-1: HP8921A Power Delta Calibration Procedure

Step Action

12 Compute the delta between HP437B and HP8921A using the following formula:

Delta = A - B

Example: Delta = -0.70 dBm - (-1.25 dBm) = 0.55 dBm

Example: Delta = 0.26 dBm - 0.55 dBm = -0.29 dBm

These examples are included to show the mathematics and do not represent actual readings.

NOTE

Add this delta value to the TX Cable Loss value during In-Service Calibration.

Figure G-1: Delta Calibration Setup - HP8921A to HP437B

Short RF Cable

HP 8921A

DUPLEX

OUT

HP437B

Power

Sensor

SENSOR

FW00801

Figure G-2: Delta Calibration Setup - HP8921A to HP8921A

Measurement HP8921A

Source HP8921A

Short RF Cable

DUPLEX

OUT

IN/OUT

FW00802

Advantest R3465 Power Delta Calibration

Follow the procedure in Table G-2 to perform the Advantest 3465 Power

Delta Calibration procedure.