Nokia Mobile Phones NSE-5 Series, Руководство по обслуживанию

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PAMS
Technical Documentation
NSE–5
Service Software Instructions
Page 45
Issue 1 07/99
During tuning, proceed as follows:
-
Take care not to damage sensitive measuring instruments with exces-
sive RF power.
-
Carry out all tuning steps in the shortest possible time to avoid exces-
sive heating of RF units.
-
Perform all tuning steps in the order presented.
-
Never try to mask a fault by tuning it out!
Tuning targets:
The level of the carrier (center frequency CHF) should be at least 30 dB
down to the wanted sideband CHF – 67.71 kHz. The level of the
unwanted sideband CHF + 67.71 kHz should be at least 35 dB down to
the wanted sideband CHF – 67.71 kHz.
The user is first requested to select with which values the tuning is started
in Start Tuning dialog.
Dialog mode is modal
Start Tuning dialog has following items:
Start Tuning with list box (ALT+S):
EEPROM values
Tuning values are loaded from the phones EEPROM.
Factory Default Values
Tuning values are loaded from phones Flash.
Current Values in PC Memory
Tuning values are loaded from programs internal memory.
OK button (ENTER):
Selects the memory where the start values for the tuning are placed,
closes the dialog box and continues with the TX I/Q dialog.