User Guide

Issue 1 04/2005 COMPANY CONFIDENTIAL 9

RM-94

6(b) - RF Troubleshooting Nokia Customer Care

Operation mode Burst

RX/TX Channel 37 or 700 or 661

Select Testing T

SNR Measurement M

Select Measuring mode Fast SNR (Radio Button)

Press Start

The window <Signal Measurement> pops up informing on frequency and power level of the

signal generator to be set. Follow the command <Turn ON the RF generator>.

Press <ok> and the window will close.

Read the SNR result from the window SNR Measurement. The value shall exceed:

• GSM 900: > 20 dB

• GSM 1800: > 18 dB

• GSM 1900: > 18 dB

The set up should now look like this:

(The example below shows a screen shot in GSM900!)

Choose the remaining GSM bands and measure accordingly the procedure described above.

Measuring front-end power levels using spectrum analyzer

Spectrum analyzer (SA) level values depend on the probe type and shall be verified by a prop-

erly working phone sample. The levels that are given in this document are measured with a re-

sistive probe (50 Ohm semi-rigid cable).

Start Phoenix Service Software and open FBUS connection.