Calibration Explanation; Overview; Calibration Items - LG U8138 Service Manual

8. CALIBRATION

8.3 Calibration Explanation

8.3.1 Overview

In this section,it is explained each calibration item in the XCALMON.Also the explanation includes
technical information such as basic formula of calibration and settings for key parameters in each
calibration procedure.
At first,when any of calibration is done,the results are displayed in the XCALMON result window and
the result of calibration will be stored in GDFS(Global Data Flash Storage).

8.3.2 Calibration Items

A. EGSM 900 Band
- MODA-D(MD bit)Delay Calibration
- RXVCO Varactor Operating Point Calibration
- TXVCO Varactor Operating Point Calibration
- TX Loop Bandwidth Calibration
- VCXO Calibration
- TX Power Calibration
- RSSI and AGC Calibration
B. DCS 1800 Band
- RXVCO Varactor Operating Point Calibration
- TXVCO Varactor Operating Point Calibration
- TX Loop Bandwidth Calibration
- TX Power Calibration
- RSSI Cal i br at i on
C. WCDMA Band
- RF VCO Center Frequency Calibration
- TX Carrier Suppression Calibration
- TX LPF Bandwidth Calibration
- TX Maximum Output Power Calibration
- TX Power Table Calibration
- TX Open Loop Power Control Calibration
- RX LPF Bandwidth Calibration
- RX LNA Gain Switch and AGC Hysteresis Calibration
- RX AGC Gain Max and Rx RSSI Calibration
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