User manual RAMSEY CPO3

[. . . ] CODE PRACTICE OSCILLATOR KIT Ramsey Electronics Model No. CPO3 Ever wanted to hone your code skill but didn't have an easy way to practice?This handy little kit will allow you to tap away anywhere you happen to be!Small enough to fit into your pocket or briefcase, you can take it anywhere. [. . . ] 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. Study your connection before you zap it with heat and 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!TEN COMMANDMENTS OF GOOD PC-BOARD SOLDERING 1. 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!Dirty, grubby solder will contribute to dirty, grubby connections. 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 dull or brittle, it's no good. 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. [. . . ] NOT be assembled with acid core solder or flux. BE returned in fully-assembled form, not partially assembled. BE accompanied by the proper repair fee. No repair will be undertaken until we have received the MINIMUM repair fee (1/2 hour labor) of $18. 00, or authorization to charge it to your credit card account. [. . . ]