User's Manual

Power Delta Calibration – continued
FEB 2005 1X SC 4812T Lite BTS Optimization/ATP H-5
PRELIMINARY
Table H-1: Agilent E4406A Power Delta Calibration Procedure
n ActionStep
9i Using the Softkeys, select External Atten and then select Mobile.
9j Using the Numeric Keypad, set Mobile to 0 (zero) and, using the Softkeys, select dB.
9k Using the Softkeys, select Base.
9l Using the Numeric Keypad, set Base to 0 (zero) and, using the Softkeys, select dB.
9m Press MEASURE and, using the Softkeys, select Channel Power.
10 On the E4432B Signal Generator, press RF On/Off to toggle the RF Output to RF ON.
– Note that the RF On/Off status in the Screen Display changes.
11 Read the measured Channel Power from the E4406A Screen Display and record it as Result B.
B____________________.
12 On the E4432B, press RF On/Off to toggle the RF Output to RF OFF.
– Note that the RF On/Off status in the Screen Display changes.
13 Calculate the Power Calibration Delta Value.
– The Delta Value is the Power Meter Measurement minus the Agilent 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
NOTE
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.
– Refer to Step 4 in Table H-6.
Power
Sensor
Agilent E4432B and E4406A
Short RF Cable
HP437B
SENSOR
RF OUTPUT
Figure H-1: Delta Calibration Set–up – Agilent E4432B to HP437
H