User Guide

CCS Technical Documentation
Page 70 ¤Nokia Corporation Issue 2 11/02
Typical TX Iq Tuning Values and tuning limits GSM 900:
I DC Offset -2.5…+0.5 -6…+6
Q DC Offset -2.5…+0.5 -6…+6
Amplitude difference -0.2…+0.2 -1…+1
Phase difference 88.0°….92.0° 80°…100°
• If values shown are within limits, check the "Save to product" tick box and
choose “Stop” save the new values to the product
• Continue tuning from GSM1800. Choose the correct band from the dropdown
menu.
• Repeat the same steps as for the EGSM900 band
• Set spectrum analyzer center frequency to 1747.8 MHz, span 200kHZ, RBW and
VWB 3kHz and sweeptime to 2 seconds