User Manual

Calibrating Output Power
68P09255A57-2
Aug 2002
SC4812ET Optimization/ATP Manual Software Release R16.1.x.x
PRELIMINARY
G-10
Table G-4: Agilent E4406A Power Delta Calibration Procedure
Step Action
8
* IMPORTANT
Do not change the frequency and amplitude settings on the E4432B when performing the following
steps.
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
- Enter the frequency of the channel to be calibrated using the numeric keypad
- 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.
12
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.
G