User Guide

NSM–2
Service Software Instructions
PAMS Technical Documentation
Page 38
Issue 1 12/1999
 Nokia Mobile Phones Ltd.
Tx I/Q... command
Activation Status Bar Text
Alt, T,Q Open TX I/Q Tuning dialog box
This function is used for tuning TX I and Q branch DC offset, amplitude
difference and phase difference.
If user has PKD–1 dongle and other than NSM–X phone, then tuning is
started automatically with EEPROM values. When using other dongles
this selection opens same Start Tuning dialog as with TX Power Tuning.
The next automatic selections are made when this function is activated:
Operation Mode = TX pulsed
Update RF Information window
The TX I/Q Tuning dialog is opened.
Dialog mode: modal
TX I/Q Tuning has following items:
Tune TX I
DC Offset scroll bar (ALT+I):
The DC Offset is shown as percents (%) from the ± maximum
value. 0% means that there is no DC. The value range is
–100%...100%. The value is rounded to the nearest integer
value.
Tune TX Q
DC Offset scroll bar (ALT+Q):
The operation of this function is the same as one above, ex-
cept with this selection the Q branch DC Offset is tuned. The
value range is –100%...100%. The value is rounded to the
nearest integer value.
Tune A
mplitude Difference scroll bar (ALT+A):
When this selection is made user can increase or decrease the
amplitude difference within 0.1 dB steps. The value range is
–1...1.
Tune P
hase Difference scroll bar (ALT+P):
When this selection is made user can increase or decrease the
phase difference within 0.5° steps. The current phase differ-