Tx I/Q - Nokia NSM–3 Service Manual

NSM–3/3D
Service Software Instructions
Tx I/Q... command
Activation
Alt, T,Q
This function is used for tuning TX I and Q branch DC offset, amplitude
difference and phase difference.
If the the user has a 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:
The TX I/Q Tuning dialog is opened.
Dialog mode: modal
TX I/Q Tuning includes following items:
Tune TX I DC Offset scroll bar (ALT+I):
Tune TX Q DC Offset scroll bar (ALT+Q):
Page 36
Status Bar Text
Open TX I/Q Tuning dialog box
Operation Mode = TX pulsed
Update RF Information window
The DC Offset is shown as percents (%) from the
value. 0% means that there is no DC. The value range is
–100%...100%. The value is rounded to the nearest integer
value.
The operation of this function is the same as one above, ex-
cept with this selection the Q branch DC Offset is tuned. The
E Nokia Mobile Phones Ltd.
PAMS Technical Documentation
maximum
Issue 4 02/2002