User's Manual

Power Delta Calibration68P09258A31–A

Oct 2003

1X SCt 4812T BTS Optimization/ATP

H-7

Table H-2: Advantest Power Delta Calibration Procedure

Step Action

40 Calculate the Power Calibration Delta value. The delta value is the power meter measurement minus

the Advantest measurement.

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 (see Step 4 in

Table H-5).

Figure H-3: Delta Calibration Setup – R3561L to HP437B

Advantest

Power

Sensor

RF OUT

Short RF Cable

HP437B

SENSOR

R3561L

FW00803

Figure H-4: Delta Calibration Setup – R3561L to R3465

R3561L

RF OUT

INPUT

Short RF Cable

R3465

FW00804