User Guide

PAMS
Technical Documentation
NHB–3
Service Software Instructions
Original 26/97
Page 26
3.2.3 – TX I/Q Tuning
This function is used for tuning TX I and Q branch DC offset, amplitude differ-
ence and phase difference.
The function causes the same question about values (from EEPROM or PC) as
power tuning.
The next automatic selections are made when this function is activated:
– active unit = TX
– operation mode = Burst
– TX power level = 5
– if TX data type= RANDOM => TX Data Type= 1
– channel = 661
The next menu is displayed after the answer.
User can tune the current value with the arrow right and left keys.
After each value change the new value are send to the phone.
The next automatic selection is made when TX I / Q tuning function is ended:
– active unit = RX
3.2.3.1 – Tune TX I DC Offset
The DC offset is shown as precentages (%) 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.
3.2.3.2 – Tune TX Q DC Offset
The operation of this function is the same as one above, except with this selec-
tion the Q branch DC offset is tuned.