Tx I/Q - Nokia NSE-6 SERIES Service Manual

NSE/M–1/3/6
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.
The function 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 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, except 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 Amplitude Difference scroll bar (ALT+A):
When this selection is made user can increase or decrease the ampli-
tude difference within 0.1 dB steps. The value range is –1...1.
Tune Phase Difference scroll bar (ALT+P):
When this selection is made user can increase or decrease the phase dif-
ference within 0.5° steps. The current phase difference is shown on the
tuning window with numbers and bar figure. The value range is –85...90.
Save button (ENTER):
Page 34
Status Bar Text
Open TX I/Q Tuning dialog box
Operation Mode = TX pulsed
Update RF Information window
PAMS
Technical Documentation
Original 08/98