User Guide

RH-17
Troubleshooting — RF CCS Technical Documentation
Page 34 Nokia Corporation Confidential Issue 1 04/2003
Explanation of Result:
The result is the value of G_Offset which gives -8.0 dBm transmitted power.
Manual Verification:
See previous tuning. This is the value of G_Offset needed to get -8 dBm on the center
channel.
Troubleshooting:
If G_Offset is not within the limits, troubleshoot the Cell TX as described in the begin-
ning of this document.
Test 69 - 75 TN TX Limiting PO IS95 Cell, Low channel (or LowMid, MidLow, Mid, MidHigh,
HighMid or High channel)
Description:
This tuning provides an upper limit on the transmit power while in Cell IS95 mode. The
reason for this is to ensure that the phone never violates the SAR (Specific Absorption
Ratio) limit, which is a health and safety specification that limits the amount of radia-
tion near the user's head. The phone is set to transmit and TxdBCtr is adjusted for the
maximum transmit power.
Explanation of Result:
The result is a power level in dBm, which is the maximum allowed. This is done on each
of the seven channels.
Manual Verification:
Using Phoenix, set the phone to local mode, then turn on the Cell transmitter set to each
of the channels in the list below. Set modulation to IS95 voice using CDMA Control.
Using the RF Tuning window, adjust TX RF AGC in PDM Control "value" until the TX
power, measured on the RF connector with a spectrum analyzer, is within the limits on
each of the channels below.
Channel Cell Frequency Range for output power, in dBm
Low 991 824.04 MHz 23.3 to 23.5 dBm
LowMid 107 828.21 MHz 23.6 to 23.8 dBm
MidLow 245 832.35 MHz 24.0 to 24.2 dBm
Mid 384 836.52 MHz 24.4 to 24.6 dBm
MidHigh 512 840.36 MHz 24.3 to 24.5 dBm
HighMid 660 844.80 MHz 24.2 to 24.4 dBm
High 799 848.97 MHz 24.1 to 24.3 dBm