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Old 08-19-2010, 10:15   #181 (permalink)
Rizal Arsyad Dini
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Originally Posted by mobidoc View Post
hello m8s

oscilloscope is the best tool for acurate measure of signals or even dc voltages & most used in baseband repair also can be used in
rf field to check rf clock , I/Q signals & rfbus signals from cpu to rf asic .

in mobiles phones it has no limit of use :

1- u can measure crystals activity ( frequency & output amplitude to be sure of exact needed output )
2- u can measure signals of busses between ics ( rfbus & cbus)
3- u can check i2c lines activity to check faults like camera faults
4- u can check signals where pull up resitances found so u can see signals & check pull up validity
5- u can check ram , flash & sleep clocks to solve freezing & restarting problems
6- u can check smps clock used to drive the light ics
7- u can check clock & data lines of mmc
8- u can check bluetooth , gps & wlan busses signals & clocks

& much more

so we can say that oscilloscope is an important tool to work poffesionaly in gsm handsets repair field

kind regards

very nice explain bro.....

agree with u
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