User manual RAMSEY CPO3

[. . . ] 590 Fishers Station Drive Victor, New York 14564 Phone (585) 924-4560 Fax (585) 924-4555 www. ramseyelectronics. com CPO3 · 3 INTRODUCTION Morse Code has been used since 1837. It was originally used for telegraph communications and was the first method used for radio communications. For many years, Morse Code was required knowledge for any shipboard radio operator. In 1910, the Titanic was the first ship to use the international distress call SOS. [. . . ] A "cold" solder connection is caused by too little heat OR by heating only the component wire and not the wire and PC copper foil together. The tell-tale sign of too little heat is a dull, rough-looking connection. If you heat only the wire, the solder forms a cute ball around the wire, and rosin may completely insulate your ball from the copper. SOLDER BRIDGES You probably know that a solder bridge is a perfect and unintended connection of two PC board points that should NOT be connected. They happen most easily when soldering IC's and other devices with pins close together. The only technique for avoiding solder bridges is for you to be in complete control of the tip of your soldering pencil. The best single tools for avoiding bridges are a proper point on the soldering iron, bright light, perhaps with some magnification of your work, and thin diameter solder. Choose the best "approach angle" for the iron's tip to heat the connection. Plan ahead to let your solder do what YOU want it to do, and you just won't make any solder bridges!If the soldering iron tip is covered with burned rosin, it cannot heat your connection very well. If you heat only the wire and not the wire and PC trace together, a cold, bad connection is likely. If your soldering tip is big enough to bridge two adjoining connections, it probably will!Any use of acid core (plumbers!) solder in electronics work will destroy everything. . . DON'T USE IT!A connection in a large area of PC-board copper requires more heat than one pin of an IC. If your connection looks like a ball instead of a shiny cone, it's no good. Thin diameters of shiny, fresh rosin core solder are easier to use for KIT PC board work than thicker "hardware store" solder. Pre-tin any stranded hookup wires leading in and out of your PC board kit project. It will prevent problems later! CPO3 · 11 ASSEMBLY INSTRUCTIONS In ALL PC board assembly steps, our word "INSTALL" means to do this: · · Insert the part, oriented or "pointed" correctly, into its holes in the PC board. If helpful, gently BEND the part's wire leads or tabs to hold it in place, with the body of the part snugly against the top side ("component side") of the circuit board. The "component side" is silkscreened with the part numbers for easy parts location identification. Trim or "nip" all excess wire lengths extending beyond each solder connection, taking care that wire trimmings do not become lodged in solder connections. Follow the assembly instructions IN SEQUENCE and check off each step as understood and completed. [. . . ] Ramsey Electronics, Inc. , reserves the right to refuse repair on ANY item in which we find excessive problems or damage due to construction methods. To assist customers in such situations, Ramsey Electronics, Inc. , reserves the right to solve their needs on a case-by-case basis. Please understand that our technicians are not volunteers and that set-up, testing, diagnosis, repair and repacking and paperwork can take nearly an hour of paid employee time on even a simple kit. Of course, if we find that a part was defective in manufacture, there will be no charge to repair your kit (But please realize that our technicians know the difference between a defective part and parts burned out or damaged through improper use or assembly). [. . . ]