Nokia 9000i, Service Manual

Page: 182 / 434

After Sales
Technical Documentation
RAE/RAK–1N
Service Software
Page 7– 24
Amendment 1 04/97
There is one selection which is used for power coefficient calculation. Only
three power coefficients (biggest, third smallest and smallest) are needed
for tuning, the rest are calculated.
The calculation is activated with <F3> key. The power coefficients which
are calculated from the tuned coefficients are displayed on the different
columns than the others. All values can be tuned if needed.
The following automatic selections are made when this tuning function is
activated:
– if transmission data is neither 0 nor 1 then continuous 1
data is selected
– Active Unit = TX
– the base power level is selected
– Operation mode = Burst
– Channel = 60
<+> and <–> keys will cause power changing by 0.25 dB steps (D/A
converter control value ratio is 1.0292). When these keys are used the
coefficient value is updated on the tuning window.
When save <F2> or exit <ESC> selection is used, the power value
checking is made and if it is not successful, an error message is shown.
The test checks if all power coefficient values are in the same numerical
order as Power Levels in the table.
When TX Power Tuning is ended and if the power values are not
acceptable, the error message is displayed and the user is asked to
continue or break the tuning. These responses are in use:
Key Response
N or Esc The tuning is continued
Y The tuning is ended without EEPROM writing and
power coefficients are asked from EEPROM (the user
is informed.)
other key –