Calibration Explanation; Overview; Calibration Items - LG U8210 Service Manual

7. CALIBRATION

7.3 Calibration Explanation

7.3.1 Overview

In this section, it is explained each calibration item in the Pegasus. Also the explanation includes
technical information such as basic formula of calibration and settings for key parameters related with
Pegasus's internal calibration process.
At first, when any of calibration process is done, the results are displayed in the Pegasus result
window. Then, output from the calibration process is stored in non-volatile (NV) memory.

7.3.2 Calibration Items

A. EGSM 900 Band
- GSM Ramp Up/Down Calibration
- GSM Freq. Comp. Calibration
- GSM RX Gain Range Calibration
B. DCS 1800 Band
- DCS Ramp Up/Down Calibration
- DCS Freq. Comp. Calibration
- DCS RX Gain Range Calibration
C. PCS 1900 Band
- PCS Ramp Up/Down Calibration
- PCS Freq. Comp. Calibration
- PCS RX Gain Range Calibration
D. WCDMA Band
- TX Linearity Calibration
- TX HDET Calibration
- TX Freq. Comp. Calibration
- TX Freq. Limit Calibration
- RX Linearity Calibration
- RX Freq. Calibration
- RX LNA Calibration
- RX LNA Freq. Calibration
- 174 -