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Things You'll Need
Instructions
Consult the datasheet of the transducer to determine the assignments of its cables. All cables are colored, and the assignments in the datasheet relate to those colors. In general, red and black are reserved for power and ground, while green and blue are used for signal outputs. For an eight-pin transducer, there will be four more cables that are used for control signal or some other purpose. Note that there is no set standard for assignment of colors to transducer cables, so it's good practice to consult the datasheet before making any connections. Write down all the cable assignments on a piece of paper.
Determine the pin assignments for the transducer connector by checking the datasheet of the device to which you are going to connect the transducer. The connector will go to a socket on that device, so you need to consult the manufacturer's datasheet to determine the pin assignments. The transducer cable pins should be numbered. Write down these numbers on the same paper on which you wrote the cable assignments. Draw lines between the cables and the pins to show the connections. This technique minimizes the chance of making the wrong connections.
Strip off about a quarter inch of insulation from the ends of each of the transducer cables, using a wire stripper. Place the cables on a flat, dry surface so that all the stripped ends are separately exposed. You can use a weight to keep the cables in place during the soldering process.
Turn on the soldering iron and set it to 400 degrees Fahrenheit.
Hold the solder wire on the stripped end of any one of the transducer cables and touch the cable and the solder wire at the same time with the soldering iron tip. The solder will melt and flow to cover the stripped end of the cable. Retract the solder wire and the soldering iron tip. Repeat this process to melt solder on the remaining cables.
Place the transducer connector on a flat, dry surface so that its pins are exposed. Hold the solder wire on any one of the connector pins and touch the pin and the solder wire at the same time with the soldering iron tip. As soon as the solder melts and covers the pin, retract the solder wire and the soldering iron tip. Repeat this process to melt solder on the rest of the pins.
Hold any one transducer wire and determine the transducer pin it should be connected to, using the diagram you made earlier. Hold the stripped end of this wire on the corresponding pin of the transducer and touch it with the soldering iron tip. The solder on the cable and the pin will melt and merge together. Retract the soldering iron tip but keep on holding the wire in place for three to four seconds to let the solder cool down and solidify. Repeat this process to solder the rest of the cables to the corresponding pins of the transducer.