PAMS Technical Documentation
6 - Troubleshooting
NPL-1
,VVXH$SULO
1RNLD&RUSRUDWLRQ
3DJH
Yes
Oscilloscope
R823
VTXB_900
Vdc = 2.78 Volt
No
Check:
C702
CONT1
Vdc = 0 Volt
Mjoelner Serial
Interface
C701
CONT2
Vdc = 0 Volt
Mjoelner
C703
CONT3
Vdc = 2.78 Volt
C803
VBD
Vdc = 2.78 Volt
Yes
Spectrum analyzer
No
Check
Z701 out, R806 in
TX_900
P>= -3 dBm, 897,4 MHz
EGSM TX SAW Filter
Compare with good sample
Mjoelner
Yes
Synthesizer
Use Phoenix to select
TX_Data Type: Random
TX Power Level: 10
Yes
Spectrum analyzer
Check PA N801
L801 B1_in (PA N801
Pout_GSM)
No
Check Power Loop
L801,V801
Power = +25 dBm, 897,4
MHz
Check TXC
Yes
Spectrum analyzer
Check
RF-connector
No
Directional Coupler (L801)
Pout =+23 dBm, 897,4 MHz
Antenna Switch (Z601)
Yes
EGSM TX
OK
Содержание 6310I - Cell Phone - GSM
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