Ams Baseband Calibration - Nokia 6275 Baseband Description And Troubleshooting

Nokia Customer Care

AMS Baseband Calibration

Use the AMS baseband calibration to perform the following tests:
• ADC - Verify and calibrate the gain and offset for 11 channels analog to digital
converter in the UEM.
• VBAT - Calibrate the gain and offset of the battery input path for accurate
battery level monitoring.
• VCHAR and ICHAR – Verify the charging circuit and path calibrate gain and
offset for correct charger detection.
• BSI – Calibrate the gain of the BSI line for battery size information upon
powering up.
• Btemp – Calibrate gain of Btemp for battery temperature monitoring during
charging for over temperature shut down.
Issue 1 - September 2006
Baseband Description and Troubleshooting
Company Confidential
6275/6275i (RM-154)
Page 39