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Go Back   GSM-Forum > GSM & CDMA Phones Hardware Repair Area > Hardware Equipments for GSM

Hardware Equipments for GSM All about Hardware Instruments and equipments like Soldering Stations, Hardware Tools, Oscilloscopes , Frequency Counters ..ext.

View Poll Results: we must have an oscilloscope to repair hardware
yes 1,117 72.39%
no 437 28.32%
Multiple Choice Poll. Voters: 1543. You may not vote on this poll

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Old 08-19-2010, 10:15   #181 (permalink)
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Quote:
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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Old 09-01-2010, 19:28   #182 (permalink)
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i have n86 phone charging problem.i need help pls thanks
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Old 09-01-2010, 19:29   #183 (permalink)
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i need board n86 charging problem.i need daigram thanks
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Old 09-01-2010, 19:30   #184 (permalink)
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pls reply soon on my id [email protected]
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Old 09-16-2010, 04:31   #185 (permalink)
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Quote:
Originally Posted by mohammed faiyaz View Post
pls reply soon on my id [email protected]
sir... can u make new thread at nokia hardware section????

u make this thread bad!
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Old 09-28-2010, 18:50   #186 (permalink)
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i have work diffrent filds of electronices from my experience oscilloscope is the best fault finding instruments for all the electronices divices as you can very easyly check all
kind of signals & pulses
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Old 10-18-2010, 17:24   #187 (permalink)
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Hello for everybody,I have some questions:
1-What is the difference between Spectrum Analyzer and Oscilloscope?
Is the difference in the frequency?Can we measure with oscilloscope the output signal
than come to antenna ? Help me please

2-Can we measure the non direct signal like clock signal without Oscilloscope?

3-What type oscilloscope and Spectrum Analyzer that are useful for Gsm Measurement?

4-I found in the net an oscillscope that is named "PoScope Basic", is it useful for Gsm Measurement?
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Old 10-18-2010, 20:31   #188 (permalink)
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hello m8

1 - Spectrum analyzer - Wikipedia, the free encyclopedia
Oscilloscope - Wikipedia, the free encyclopedia
2- if u mean clock like 32khz yes u can use frequency counter but u cant measure the amplitude of the signal .
3- digital oscilloscope with 200mhz bandwidth will be ok for baseband
spectrum analizer must be used with an rf generator to inject signal to mobile ,
3 ghz analizer & rf generator will cover all mobiles bands.
4- put link to check the specifications of poscope basic to advice u.

kind regards
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Old 10-20-2010, 17:02   #189 (permalink)
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Hello,can we inject RF signal from base satation without RF generator?
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Old 10-21-2010, 20:10   #190 (permalink)
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i think following istrument are useful
1-multimetre
2-kawia
3-heat gun
4-automatic power supply
5-computer
6-sw devices ex..ufs...spiderman....infiniry box.....etc
7-osciloscop .........not must
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Old 10-24-2010, 08:18   #191 (permalink)
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hello m8

about injecting signals into mobile u have 2 cases :

1st using rf generator where signal will be analog modulated with offset 67.710 khz signal but in this case u need a control software for the mobile brand ur making tests on ( like phoenix for nokia )
2nd using a gsm tester or normal gsm signal , in this case u need sim inside the mobile while making manual search ull be able to measure i/q sgnals , pulses & rf control voltages .
here is an example posted by me here YouTube - 19042010003.mp4

kind regards
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Old 11-05-2010, 20:32   #192 (permalink)
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any buddy tell me
any saler ossiloscope and infrared
in india
and best quality mobile spare parts,flax dealer
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Old 11-08-2010, 19:24   #193 (permalink)
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ossiloscope is best in Audio and Video Servicing

-For Advance Communication is Very Best Too
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Old 12-12-2010, 22:24   #194 (permalink)
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Hello Isac Spy

I followed your activities here.AND you looks like a prof in this area .And i would like to ask your opinion about the next instrument.Do you think this could be usefull among in my developing gsm skills supporter instrument?


USB Function Generator/Oscilloscope i think so this sampler is can not work in real time but has a very wide capabilities up to 4 GHZ SO MY QUESTION IS ? What is your opinion about this usb digital oscilloscope in gsm related servicing.Thank you very much your answer in advance.

Last edited by koala4791; 12-12-2010 at 22:26. Reason: Ichal Spy sorry
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Old 12-13-2010, 09:21   #195 (permalink)
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rework station,multimeter,......etc oscilloscopes is too x pensive 4 nothing
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