oscilloscope is the best GSM fult finding Hardware Equipments - Page 2 - GSM-Forum

yousaf22us · 07-04-2008, 08:34

oscilloscop is only best for those modelz if u have already configuration of wave length table for measuring for frequency at any point with out measuring table of any board dont think so its useful

r-o-y · 07-04-2008, 09:18

nokia screwdriver is the best tool

alianu · 07-04-2008, 09:44

depends - the freq the osciloscope can measure and if it is analogic or digital or if it has memory or not to save the readings. If u have a osciloscope that can measure 2 GHz frecvency then is good for GSM. lower frectvency rate osciloscopes doesen't helpo very much but is good for measure the TX and RX or the clock ... Spectrum analyser is a diferent tool there u can see not the form of the wave but the range and the amplitude and the armonics wich does help some time. But the best tool is brain and electronic knowledge and a vrey good multimeter. Of course a very good power supply also is good but we must not forget that the best is the hot or air infrared soldering reworking tool. But again depends on the fault that we must solve. If it is a software problem then the box and the software can make all the diferences. Best regards u all. alianu.

torpedo_seluler · 07-05-2008, 06:33

If For Nokia we still Have to use phoenix and test jig. I think it's not neccesary.

Just use HWK do selltest. It's also quite nice solutions.

ece_05 · 07-05-2008, 06:48

in jaf also we can use selftest 60-80% accuracy in hardware fault finding. .

nguyenhuu · 07-05-2008, 07:24

l think oscilloscope can see tx (pinout chines) and rx nead tx

nguyenhuu · 07-05-2008, 07:37

oscilloscope is champion to repair
now l sometime repair so l dont use it

edwin08 · 07-21-2008, 08:18

we use osciloccope,if our service repair shop is level 4

edwin08 · 07-29-2008, 17:46

yes!!! if your repair center is level 3 or 4,,,,vey important to use the oscilloscope and gonogo test,,,spectrum analyzer,and also the zevac machine to remove the bga ic,,,,

edwin08 · 07-29-2008, 17:48

the best tool is the anti---static tools,,,

l3o_gsm · 07-30-2008, 06:02

it is better to use oscilloscope than to make error

cxacxa · 08-08-2008, 14:04

i think.. SELFTEST + SCHEMATICS DIAGRAM + MULTITESTER more faster and better for finding fault. and absolutly cheaper..

OSC <= efective for development only.

syedqurat · 08-09-2008, 09:28

Quote:

Originally Posted by ece_05

in jaf also we can use selftest 60-80% accuracy in hardware fault finding. .

how can we selftest? if set is dead

**Rizal Arsyad Dini** · 08-09-2008, 19:27

i have use osciloscope since 2004 and for me this tool is very important.. that make me work more focus and more easy to find the problem on the harware mobile fault

baldev · 08-10-2008, 16:10

I have one.I use it only on dead phones to measure 32.678khz and 26 Mhz frequency.

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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07-04-2008, 08:34	#16 (permalink)
yousaf22us No Life Poster Join Date: Feb 2005 Location: P A K I S T A N Posts: 783 Member: 113943 Status: Offline Thanks Meter: 73	oscilloscop is only best for those modelz if u have already configuration of wave length table for measuring for frequency at any point with out measuring table of any board dont think so its useful

07-04-2008, 09:18	#17 (permalink)
r-o-y Freak Poster Join Date: Nov 2002 Location: La La Land Age: 43 Posts: 127 Member: 17800 Status: Offline Thanks Meter: 8	nokia screwdriver is the best tool

07-04-2008, 09:44	#18 (permalink)
alianu Freak Poster Join Date: Jun 2001 Location: Romania Age: 53 Posts: 330 Member: 4875 Status: Offline Thanks Meter: 9	depends - the freq the osciloscope can measure and if it is analogic or digital or if it has memory or not to save the readings. If u have a osciloscope that can measure 2 GHz frecvency then is good for GSM. lower frectvency rate osciloscopes doesen't helpo very much but is good for measure the TX and RX or the clock ... Spectrum analyser is a diferent tool there u can see not the form of the wave but the range and the amplitude and the armonics wich does help some time. But the best tool is brain and electronic knowledge and a vrey good multimeter. Of course a very good power supply also is good but we must not forget that the best is the hot or air infrared soldering reworking tool. But again depends on the fault that we must solve. If it is a software problem then the box and the software can make all the diferences. Best regards u all. alianu.

07-05-2008, 06:33	#19 (permalink)
torpedo_seluler Freak Poster Join Date: Oct 2006 Location: Indonesia Posts: 423 Member: 368629 Status: Offline Thanks Meter: 87	If For Nokia we still Have to use phoenix and test jig. I think it's not neccesary. Just use HWK do selltest. It's also quite nice solutions.

07-05-2008, 06:48	#20 (permalink)
ece_05 Freak Poster Join Date: Nov 2007 Location: lianga surigao sur Posts: 176 Member: 631879 Status: Offline Thanks Meter: 29	in jaf also we can use selftest 60-80% accuracy in hardware fault finding. .

07-05-2008, 07:24	#21 (permalink)
nguyenhuu Freak Poster Join Date: May 2005 Location: hanoi.vietnam Posts: 292 Member: 142949 Status: Offline Thanks Meter: 71	l think oscilloscope can see tx (pinout chines) and rx nead tx

07-05-2008, 07:37	#22 (permalink)
nguyenhuu Freak Poster Join Date: May 2005 Location: hanoi.vietnam Posts: 292 Member: 142949 Status: Offline Thanks Meter: 71	oscilloscope is champion to repair now l sometime repair so l dont use it

07-21-2008, 08:18	#23 (permalink)
edwin08 Freak Poster Join Date: Jul 2008 Location: Pinoy Ako / Caloocan City Posts: 290 Member: 818748 Status: Offline Sonork: 00000 Thanks Meter: 44	we use osciloccope,if our service repair shop is level 4

07-29-2008, 17:46	#24 (permalink)
edwin08 Freak Poster Join Date: Jul 2008 Location: Pinoy Ako / Caloocan City Posts: 290 Member: 818748 Status: Offline Sonork: 00000 Thanks Meter: 44	yes!!! if your repair center is level 3 or 4,,,,vey important to use the oscilloscope and gonogo test,,,spectrum analyzer,and also the zevac machine to remove the bga ic,,,,

07-29-2008, 17:48	#25 (permalink)
edwin08 Freak Poster Join Date: Jul 2008 Location: Pinoy Ako / Caloocan City Posts: 290 Member: 818748 Status: Offline Sonork: 00000 Thanks Meter: 44	the best tool is the anti---static tools,,,

07-30-2008, 06:02	#26 (permalink)
l3o_gsm Insane Poster Join Date: Jan 2008 Location: Philippines Posts: 68 Member: 684475 Status: Offline Thanks Meter: 13	it is better to use oscilloscope than to make error

08-08-2008, 14:04	#27 (permalink)
cxacxa Freak Poster Join Date: Oct 2007 Location: Central JAVA Posts: 111 Member: 616091 Status: Offline Thanks Meter: 27	i think.. SELFTEST + SCHEMATICS DIAGRAM + MULTITESTER more faster and better for finding fault. and absolutly cheaper.. OSC <= efective for development only.

08-09-2008, 19:27	#29 (permalink)
Rizal Arsyad Dini Product Manager Join Date: Sep 2003 Location: Indonesia Age: 45 Posts: 3,916 Member: 39251 Status: Offline Sonork: 100.1618715 Thanks Meter: 6,155	i have use osciloscope since 2004 and for me this tool is very important.. that make me work more focus and more easy to find the problem on the harware mobile fault

08-10-2008, 16:10	#30 (permalink)
baldev No Life Poster Join Date: Jun 2005 Location: Punjab , INDIA Posts: 1,260 Member: 153805 Status: Offline Thanks Meter: 325	I have one.I use it only on dead phones to measure 32.678khz and 26 Mhz frequency.