Nokia RH-37 Series Service Software And Tuning Instructions page 52

RH-37
Service Sofftware and Tuning Instructions
Tune the band filters and save its compensation values to the phone memory for each
GSM band as described above.
Automatic tuning
A faster and more comfortable method for Band Filter Calibration (BFC) can be per-
formed by the automatic tuning mode. This requires an RF signal generator that can be
internally programmed for sweeping, e.g. Agilent E4421B.
Open the window <Rx Band Filter Response Compensation> in Phoenix Service Software
as follows:
Select
Phoenix selects automatically the low band.
Select automatic in the <Tuning mode> in the <Rx Band Filter Response Compensation>
window.
Connect the RF signal generator to the antenna port of the test jig respectively the
phone.
Assure that modulation is switched OFF and RF power continuously ON.
Compensate for external RF cable and test jig losses.
Make sure that the <Input Signal Level (dBm)> field in the Rx Band Filter Response Com-
pensation window is set to -60 [dBm].
Press Start → the current calibration values from the phone memory are displayed in
the column <Measured Level Difference (dB)>.
The window <Tuning step 1 of 3 ...> pops up. Set the RF signal generator according the
instructions.
The setup should now look like this:
Page 52
Tuning
Rx Band Filter Response
Compensation
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Issue 1 07/04