anyone have a Le Croy LW 420 arbitrary Waveform Generator. I need a users manual for this equipment?
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See if the following helps:\nhttp://www.lecroy.com/tm/library/manuals/download.asp?id=618\n\nI found it at LeCroy's website. You can probably look in there yourself.\nhttp://www.lecroy.com/tm/library/manuals/discontinued/productmanuals.asp?menuid=1&type=2&model=16
926392
Do you have to build it or can you buy it? Radio Spares/ Allied Components supply these things off the shelf.\n\nYears ago tacho generators were made using a dc generator (hence the name) that produced a certain number of volts per number of rpm, usually expressed in volts/100 rpm. This may not give the accuracy you require.\n\nModern tacho generators are basically pulse encoders, that may be optical or proximity switch based, and the pulses are counted by some electronics and converted to an rpm reading. The actual design depending on the application. Do you want a display or a signal (0-10v, 0-20mA etc) that can be used in control? Optical based encoders can give you much more accuracy than you want but I could never understand wanting to make, or being able to make something of this complexity.
622823
anybody that produced generators!
1098285
here you go>\nhttp://pages.ebay.com/turbolister2/faq.html
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www.ece.rochester.edu/users/hrk1/FPS.htm\nwww.freepatentsonline.com/4577345.html\nmedia.mit.edu/resenv/classes/MAS965/readings/singlechipfingerprint.pdf\nMIKE
556965
Look in the operaters manual
438682
sure. go to a science store or look up schematics on the web.
732699
go to the manufacturers website and download it
108454
#include "ALLOC.H"\n#include "DOS.H"\n#include "CONIO.H"\n#include "STDIO.H"\n\n\nvoid main()\n{\n char *name;\n printf(" Enter the file name...:");\n scanf("%s",name);\nplaywav(name,1.0);\n\n}\n\n\nvoid playwav(char wavefile[14],float delaytime);\nstruct WaveData {\n  unsigned int SoundLength, Frequency;\n  char *Sample;\n};\n\n\nstruct HeaderType {\n  long         RIFF;      //RIFF header\n  char         NI1 [18];  //not important\n\n  unsigned int Channels;  //channels 1 = mono; 2 = stereo\n  long         Frequency; //sample frequency\n  char         NI2 [6];   //not important\n  char         BitRes;    //bit resolution 8/16 bit\n  char         NI3 [12];  //not important\n} Header;\n\n\n\n\n\nstruct WaveData Voice;         //Pointer to wave file\n\n\nunsigned int    Base;          //Sound Blaster base address\n\n\nchar            WaveFile [25]; //File name for the wave file to be played\n\n\n/*************************************************************************\n***\n** Checks to see if a Sound Blaster exists at a given address, returns\n**\n** true if Sound Blaster found, false if not.\n**\n**************************************************************************\n**/\nint ResetDSP(unsigned int Test)\n{\n  //Reset the DSP\n  outportb (Test + 0x6, 1);\n  delay(10);\n  outportb (Test + 0x6, 0);\n  delay(10);\n  //Check if (reset was succesfull\n  if ((inportb(Test + 0xE) & 0x80 == 0x80) && (inportb(Test + 0xA) ==\n0xAA))\n  {\n    //DSP was found\n    Base = Test;\n    return (1);\n  }\n  else\n    //No DSP was found\n    return (0);\n}\n\n\n/*************************************************************************\n***\n** Send a byte to the DSP (Digital Signal Processor) on the Sound Blaster\n**\n**************************************************************************\n**/\nvoid WriteDSP(unsigned char Value)\n{\n  //Wait for the DSP to be ready to accept data\n  while ((inportb(Base + 0xC) & 0x80) == 0x80);\n  //Send byte\n\n  outportb (Base + 0xC, Value);\n}\n\n\n/*************************************************************************\n***\n** Plays a part of the memory\n**\n**************************************************************************\n**/\nvoid PlayBack (struct WaveData *Wave)\n{\n  long          LinearAddress;\n  unsigned int  Page, OffSet;\n  unsigned char TimeConstant;\n\n\n  TimeConstant = (65536 - (256000000 / Wave->Frequency)) >> 8;\n  WriteDSP(0x40);                  //DSP-command 40h - Set sample frequency\n  WriteDSP(TimeConstant);          //Write time constant\n\n\n  //Convert pointer to linear address\n  LinearAddress = FP_SEG (Wave->Sample);\n  LinearAddress = (LinearAddress << 4) + FP_OFF (Wave->Sample);\n  Page = LinearAddress >> 16;      //Calculate page\n  OffSet = LinearAddress & 0xFFFF; //Calculate offset in the page\n  /*\n      Note - this procedure only works with DMA channel 1\n  */\n  outportb (0x0A, 5);              //Mask DMA channel 1\n  outportb (0x0C, 0);              //Clear byte pointer\n  outportb (0x0B, 0x49);           //Set mode\n  /*\n      The mode consists of the following:\n      0x49 = binary 01 00 10 01\n                    |  |  |  |\n                    |  |  |  +- DMA channel 01\n                    |  |  +---- Read operation (the DSP reads from memory)\n                    |  +------- Single cycle mode\n                    +---------- Block mode\n  */\n\n\n  outportb (0x02, OffSet & 0x100); //Write the offset to the DMA controller\n  outportb (0x02, OffSet >> 8);\n\n\n  outportb (0x83, Page);           //Write the page to the DMA controller\n\n\n  outportb (0x03, Wave->SoundLength & 0x100);\n  outportb (0x03, Wave->SoundLength >> 8);\n\n\n  outportb (0x0A, 1);              //Unmask DMA channel\n\n\n\n  WriteDSP(0x14);                  // DSP-command 14h - Single cycle playback\n  WriteDSP(Wave->SoundLength & 0xFF);\n  WriteDSP(Wave->SoundLength
318683
try these wib sites:\nwww.asi-ez.com\nwww.industrial-ebooks.com/free_downloads.htm\nwww.control.com\nhttp://www.discovercircuits.com/list.htm\nhttp://www.wisegeek.com/what-is-a-programmable-logic-controller.htm\nhttp://users.telenet.be/educypedia/electronics/control-systems-plc.htm
230874
Hey, ive built some circuits....check out:\nwww.techlib.com\nwww.home.maine.rr.com\nwww.hanssummers.com\nwww.angelfire.com\nif they don't work try http:\nthey are all good website to build transmitters/recievers.......or google it
287873
go to:\n\nwww.emp3finder.com\nwww.mp3shits.com\n\nyou'll find loads of stuff for your MP3 player
979420
go to the manufacturers website and download them
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go to http://ucp.ece.gatech.edu/content/3042/3042_WA2_fall03.pdf#search='pulse%20width%20modulator%20with%20555%20timer%20and%20LM311%20comparator\n\nor\nwww.colorado.edu/~ecn4618/lab2.pdf\n\nI hope this helps you somewhat.
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http://www.digitaldutch.com/unitconverter/\n I hope this is waht you are looking for.
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try the casio website and look for manual downloads
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Go to http://www.rosecitysoftware.com An download their DU Meter.  \n\nMinddoctor. France