User's Manual

Power Delta Calibration68P09258A31–A

Oct 2003

1X SCt 4812T BTS Optimization/ATP

H-11

Table H-4: Agilent E4406A Power Delta Calibration Procedure

Step Action

NOTE

Do not change the frequency and amplitude settings on the E4432B when performing the following

steps.

8 Set the E4406A as follows:

– Press Preset to exit any modes for which the transmitter tester is configured.

– Press MODE and, using the soft keys to the right of the screen, select cdmaOne.

– Press MEASURE and, using the soft keys, select spectrum.

– Press Frequency and, using the soft keys, select Center Frequency.

– Using the numeric keypad. enter the frequency of the channel to be calibrated.

– Using the soft keys, select the frequency range to be measured (for example, MHz).

– Press Input/Output and, using the soft keys, select Input Atten.

– Using the numeric keypad, set Input Atten to 0 (zero) and, using the soft keys, select dB.

– Using the soft keys, select External Atten and then select Mobile.

– Using the numeric keypad, set Mobile to 0 (zero) and, using the soft keys, select dB.

– Using the soft keys, select Base.

– Using the numeric keypad, set Base to 0 (zero) and, using the soft keys, select dB.

– Press MEASURE and, using the soft keys, select Channel Power.

9 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.

10 Read the measured Channel Power from the E4406A screen display and record it as

result B____________________.

11 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.

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

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).