User Guide

System mode independent manual tunings

RF channel filter calibration

Context

RF channel filter calibration tunes RF ASIC's internal low pass filters that limit the bandwidth of BB IQ signals.

One common calibration is made for GSM and WCDMA.

Table 13 RF channel filter calibration tuning limits

Min Typ Max

Tx filter 0 10 31

Rx filter 0 16 31

Steps

1. From the "Operating mode" dropdown menu, set mode to "Local".

2. From the Tuning menu, choose "RF Channel Filter Calibration".

3. Click Tune.

4. To save the values to the PMM (Permanent Memory) area, click Write.

5. To close the tuning window, click Close.

Results

Figure 63 RF channel filter calibration typical values

PA (power amplifier) detection

Context

The PA detection procedure detects which PA manufacturer is used for phone PAs.

If a PA is changed or if the permanent memory (PMM) data is corrupted, PA detection has to be performed

before Tx tunings.

Steps

1. From the Operating mode drop-down menu, set mode to Local.

2. Choose Tuning→PA Detection .

3. Click Tune.

RM-100

RF Troubleshooting and Manual Tuning Guide Nokia Customer Care

Issue 2 COMPANY CONFIDENTIAL Page 7 –29