Gsm1800 Transmitter; General Instructions For Gsm1800 Tx Troubleshooting - Nokia RM-94 Rf Troubleshooting Instructions

Nokia Customer Care
EDGE
Ensure that GMSK is ok.
Use Phoenix to select
TX_Data Type: All 1
EDGE: On
TX Power Level: 10
Ch37
Ensure Vbatt=3.6 V
Yes
Oscilloscope
C7702
C7711
VPCTRL_900
Yes
Spectrum analyzer
RF@Test-Jig
Pout
= +24.5 dBm, 897.4MHz
Yes
GSM900 TX
OK

GSM1800 transmitter

General instructions for GSM1800 TX troubleshooting

Start the preparations as described in chapter "General instructions for TX troubleshooting".
GMSK
Set operating mode to local mode.
Select
Wait until the RF Controls window pops up
Select
22
IREF01
Mode
R7713
Check PA N7700
No Check Power Loop
(TXC,Rfin 900, DET)
Testing
Band
Active unit
Operation mode
RX/TX Channel
TX Power Level
TX Data Type
Edge
COMPANY CONFIDENTIAL
Copyright © 2005 Nokia. All Rights Reserved.
V ~ 1.77 Volt
V = 1.8 Volt No
V= 2.7 V
RF Controls
GSM 1800
TX
Burst
700
5
Random
Off
RM-94
6(b) - RF Troubleshooting
Check
Baseband
Issue 1 04/2005