User's Manual

Table Of Contents
Power Delta Calibration – continued
FEB 2005 1X SC 4812T Lite BTS Optimization/ATP H-9
PRELIMINARY
Table H-2: Advantest R3267 Power Delta Calibration Procedure
n ActionStep
37 Press the MKR Key in the DISPLAY CONTROL section of the Control Panel.
38 On the CRT, select Normal Marker by pressing ACTIVE Key 1.
39 Record the Marker Level reading as Result B.
B________________________
40 Press Single in ENTRY Section of Control Panel.
41 Calculate the Power Calibration Delta Value.
The Delta Value is the Power Meter Measurement minus the Advantest Measurement.
Delta = AB
Example: Delta = –0.7 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
Advantest R3562 and R3267
Short RF Cable
HP437B
SENSOR
RF OUT
Figure H-3: Delta Calibration Set–up – Advantest R3562 to HP437
H