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Author Topic: USB Logic Analyzer - New Toy at the office  (Read 2696 times)
rdpzycho
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« on: July 29, 2008, 11:04:33 PM »



kanina ko lang nagamit yung bagong equipment sa office.

mas nadalian akong mag-debug with the aid of this Logic Analyzer. kakainip kasing maghintay sa debug tapos kung communication pa iba na baud rate mo. hehehe. 500MHz ang maximum sampling time. tapos 34 channels lahat.

gusto ko rin tuloy magkaroon ng ganito sa bahay. Grin
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« on: July 29, 2008, 11:04:33 PM »

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paranz
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« Reply #1 on: July 29, 2008, 11:13:06 PM »

you mean this is a USB protocol analyzer?

or a USB-based protocol analyzer?
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rdpzycho
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« Reply #2 on: July 29, 2008, 11:15:22 PM »

USB based. hehehe. mahaba kasi kung idudugtong ko yung based sa subject. Grin

Logic Analyzer lang siya though nakakarecognize ng ilang communication protocol like RS232, SPI, I2C.
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« Reply #3 on: July 29, 2008, 11:22:08 PM »

baka may extra ka pahingi naman hehe...

meron naman ako marami logic analyzers, pero nasa multisim hehe Grin
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rdpzycho
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« Reply #4 on: July 29, 2008, 11:29:18 PM »

gusto ko ngang iuwi yung sa office. hehehe. 'yun lang malamang kapag nakita 'yun sa LRT mapapaghinalaan ako, andaming wires. hehehe.

sino kaya magpapa-raffle ng ganito dito Roll Eyes Roll Eyes Roll Eyes

mas madali mag-debug kapag may equipment. hirap ng walang budget, tiyaga sa simulation o kaya sa logic probe. Sad
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« Reply #5 on: July 30, 2008, 12:21:40 AM »

@rdpzycho

iparaffle mo na hehehehe.. Grin Grin Grin i set na ang criteria Grin
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« Reply #6 on: July 30, 2008, 12:37:14 AM »

magkano naman kaya ang ganyan?

or...

baka pwede tayong gumawa nyan dito... DIY! heheh... pinoy talga... gusto tipid palagi.

iparafle mo nalang kasi yan.
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« Reply #7 on: July 30, 2008, 01:34:06 AM »

i reverse engineer natin yan Grin
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« Reply #8 on: July 30, 2008, 08:51:15 PM »

ayaw kong buksan, sa boss ko kasi yun. hehehe. pero sa liit niya most probably FPGA especially 500MHz ang maximum sampling rate. hehe.

nakikita ko na ngayon kung ano yung mali sa program ko, ang hirap kasi kahit sa debugger. hehe.

@sir marcelino: nasa $300 mahigit. marami rin kasi yung channels. balak kong gumawa ng up to 20MHz na version. Grin
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paranz
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« Reply #9 on: July 30, 2008, 11:16:28 PM »

^ mahal pala $300 hehe

dapat talaga meron DIY version
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maldihtah13
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« Reply #10 on: July 31, 2008, 09:37:13 AM »

ako ang ginagamit ko dito sa office eh scopecorder by yokogawa up to 16 channels high speed di ko lang sure ang rate. Pwede sya maging 16 channels na oscilloscope w/ recording capability at built in printer. Minsan nga lang magamit ung full function nya pang data logger lang if may mga fault sa planta.
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« Reply #11 on: July 31, 2008, 09:20:18 PM »

analog oscilloscope? ang daming channel. magkano po 'yan?

eto nga pala itsura ng screen niya. Grin



experiment ko on Software UART with Majority Voting. Grin
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« Reply #12 on: August 04, 2008, 08:23:29 PM »


32 channels wwhhheewww   Shocked ...pwede na yatang e magreverse ng pc mother board niyan ah!

wala bang DIY na open source niyan...?  Grin
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« Reply #13 on: August 04, 2008, 08:26:04 PM »

pwede siguro mag-base sa BitScope. CPLD based ang BitScope, AFAIK. eto malamang FPGA. ayaw ko pang buksan. hehehe. pag tapos na siguro ang warranty.

pwede rin siya i-convert sa 500 MSPS Analog Oscilloscope pero gagawa ka ng external ADC circuit at signal conditioner para sa BNC connectors. meron ng feature sa program niya na maglalabas ng analog waveform based sa grouping ng signal. useful di sa DSP.
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« Reply #14 on: August 04, 2008, 08:30:02 PM »


oo nga no...DSP lang kailangan para magkaroon ng analog display ok ah!
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« Reply #15 on: August 04, 2008, 08:51:15 PM »

300*45 = 13500petot! mura na to incomparison dun sa mga nonPC based. pero di pa din natin kaya... hehehe isipin mo 500Mhz na scope! tapos dami pang channels...

gawin nitin, pero una siguro, gawin yung PLD. hehehe
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« Reply #16 on: August 04, 2008, 09:09:39 PM »

hehehehe. malaki talaga difference in price. pero mahal pa rin para sa mga hobbyists dito.
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paranz
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« Reply #17 on: August 04, 2008, 09:47:26 PM »

^ mas madaling mag-aral ng CPLD/FPGA pag meron ka nyan Smiley
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rdpzycho
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« Reply #18 on: August 04, 2008, 10:09:39 PM »

mas ok nga siguro. hehehe. kita kasi yung data at responses ng program.

maganda siya especially kung data communications, hirap din kasi ma-capture sa debug kapag mabilis na communication, eventually, hindi mo rin makikita kung saan nagkamali 'yung program mo. lately nung dindebug ko yung software UART ko, tama naman yung flow ng program kapag tiningnan sa debugger pero mali pa rin sa multiple reception. ayun meron pala akong hindi nare-reset. hehehe.

lately ko lang nabasa yung Circuit Cellar article ng BitScope. problem sa bus naman ang inspiration nung creator kaya nagsimula ang BitScope.
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« Reply #19 on: August 05, 2008, 12:09:33 AM »

Siguro ito ok na for hobby use $169.50-------7,553.48 pesos

https://securedwithssl.com/hobbylab-us/product.aspx?id=30
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