Nokia RH-47 Series Rf Description And Troubleshooting page 49

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Issue 1 05/04
Company Confidential
Tune_GSM1900_Q_DC_Offs
et
Tune_GSM1900_I_DC_Offse
t_2
Tune_GSM1900_Q_DC_Offs
et_2
Tune_GSM1900_IQ_Phase_
Difference
Tune_GSM1900_IQ_Amplit
ude_Difference
Tune_GSM1900_IQ_Phase_
Difference_2
Measure_GSM1900_TX_IQ
Check_GSM1900_TX_IQ_f0
Check_GSM1900_TX_IQ_f0
_+67710
MMC_test
Selftest_A
Measure_GSM850_Tx_On_
Current
Measure_GSM1900_Tx_On
_Current
Copyright © 2004 Nokia Corporation
Company Confidential
7 - RF Description and Troubleshooting
-6 6 mV
-6 6 mV
-6 6 mV
70 110 deg
-1,2 1,2 mV
70 110 deg
Action
-120 -35 dBc
-120 -40 dBc
0 0
0 0
1,3 2,1 A
0,8 1,5 A
RH-47
x Check TXIQ Signals
with ocilloscope
(TXIOUTP, TXIOUTN,
TXQOUTP, TXQOUTN)
x
x Check TX Balun T701
x
x Maybe Mjölner N601
must be replaced
x
x
x
x
Page 49