User's Manual

Power Delta Calibration – continued
PRELIMINARY
1X SCt4812ET Lite BTS Optimization/ATP
08/01/2001
H-10
Table H-3: Agilent E6380A Power Delta Calibration Procedure
Step Action
9 Set the E6380A as follows:
– Measure mode to CDMA Anl
– Frequency to the CDMA calibration target frequency
– Input Attenuation to 0 dB
– Input port to RF–IN
– Gain to Auto
– Anl Dir to Fwd
10 Turn on the E6380A signal output.
11 Set the Chn Pwr Cal to Calibrate and select to calibrate.
12 Measure and record the channel power reading on the measuring E6380A as result
B ________________________.
13 Turn off the E6380A signal output and disconnect the equipment.
14 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-6).
Figure H-5: Delta Calibration Setup – E6380A to HP437
Power
Sensor
Agilent E6380A
ÁÁ
ÁÁ
ÁÁ
ÁÁ
ÁÁ
ÁÁ
ÁÁ
ÁÁ
ÁÁ
ÁÁ
ÁÁ
DUPLEX OUT
Short RF Cable
HP437B
SENSOR
FW00805
H