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User's Manual Part 3

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Power Delta Calibration – continued
08/01/2001
H-15
1X SCt4812ET Lite BTS Optimization/ATP
PRELIMINARY
Advantest R3465 Power Delta
Calibration
Use the Advantest R3465 spectrum analyzer to measure power during
ISC only for IS–95A and B operation. After the offset value has been
calculated, add it to the TX cable loss value.
Follow the procedure in Table H-5 to perform the Advantest 3465 Power
Delta Calibration procedure.
Table H-5: Advantest Power Delta Calibration Procedure
Step Action
* IMPORTANT
Perform this procedure after test equipment has been allowed to warm–up and stabilize for a minimum
of 60 minutes. After it is warmed up and stabilized, calibrate the test equipment as described in the
“Test Set Calibration” section of Chapter 3.
1 Press the SHIFT and the PRESET keys located below the CRT display.
2 Press the ADVANCE key in the Measurement area of the control panel.
3 Press the CDMA Sig CRT menu key.
4 Press the FREQ key in the Entry area of the control panel.
5 Set the frequency to the desired value using the keypad entry keys.
6 Press the LEVEL key in the Entry area of the control panel.
7 Set the LEVEL to 0 dBm using the keypad entry keys.
8 Verify the Mod CRT menu key is highlighting OFF, if not press the Mod key to toggle it OFF.
9 Verify the Output CRT menu key is highlighting OFF, if not press the Output key to toggle it OFF.
10 Zero the Power Meter prior to connecting the power sensor to the RF cable from the signal generator.
* IMPORTANT
For best accuracy, always re–zero the power meter before connecting the power sensor to the
component being calibrated.
11 Connect the RF cable from the R3561L CDMA signal generator RF OUT port to the power sensor,
refer to Figure H-9.
12 Press the Output CRT menu key to toggle the Output to ON.
13 Record the Power Meter reading as result A________________________.
14 Press the Output CRT menu key to toggle the Output to OFF.
15 Connect the RF cable from the R3561L signal generator RF OUT port to the R3465 INPUT Port,
refer to Figure H-10.
16 Press the Output CRT menu key to change the Output to ON.
17 Press the CW key in the Measurement area of the control panel.
18 Press the LEVEL key in the Entry area of the control panel.
19 Set the REF LEVEL to 10 dBm using the keypad entry keys.
. . . continued on next page
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