Gsm1800 Transmitter; General Instructions For Gsm1800 Tx Troubleshooting - Nokia RH-37 Series Rf Troubleshooting Instructions

RH-37
6(b) - RF Troubleshooting Instructions
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 troubleshoot-
ing".
GMSK
Set operating mode to local mode.
Select
Wait until the RF Controls window pops up
Select
Page 24
IREF01
V ~ 1.77 Volt
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
Nokia Corporation
V = 1.8 Volt No
V= 2.7 V
RF Controls
GSM 1800
TX
Burst
700
5
Random
Off
Nokia Customer Care
Check
Baseband
Issue 1 07/04