Nokia Mobile Phones NSE-5 Series, Руководство по обслуживанию

Страница: 143 / 327

PAMS
Technical Documentation
NSE–5
Service Software Instructions
Page 43
Issue 1 07/99
Cancel button (ESC):
Dialog is closed and tuning is not saved to phone.
When selections are used, the power value checking is made and if it is
not succeeded, error message is shown. The test checks that all power
coefficients are in descending order (same order than power levels).
If the power tuning function is ended and EEPROM values are not
received or EEPROM fault is noticed, an error message is shown.
When all power coefficients have such values that they don’t cause any
error messages, save can be made. The last used tuning power is in use
after exit.
The next automatic selection is made when this tuning function is ended:
Active Unit = RX
TX Power Level = (Off)
Operation Mode = Burst
Tx I/Q... command
A GSM/PCN signal tester or a GSM/PCN Spectrum analyser and an
antenna cable is needed for the tuning. Before starting the Tx I/Q tuning
the active band is set to the PCN band.
Note:: I/Q modulator alignments are performed in PCN band. If GSM band has been
selected and I/Q alignment is started, the service software asks to change to PCN band.
If the user wants to continue in GSM, the adjusted values can only be saved to PC
memory, not to phone’s emulated EEPROM. After changing to PCN band values from PC
memory are available, and if the modulator adjustment is good. The values can be saved
to phone’s emulated EEPROM. If tuning is tried in GSM mode, the following warning will
pop up:
Activation Status Bar Text
Alt, T, Q Initialising local mode...;
Setting RF Defaults...;
TX I/Q Tuning; Setting tuning on...;
This function is used for tuning TX I and Q branch DC offset, amplitude
difference and phase difference.