The operation to determine the integrity of the cable cores is called continuity. It is carried out using both combined and specialized devices. Especially convenient among them are those that have sound indication.
Instructions
Step 1
Use any tester to carry out a continuity test. It doesn't matter if it is digital or analog, but it is desirable that it has an audio indication mode. This will allow you to work without being distracted by the change in the position of the arrow or the display.
Step 2
Whatever the device, switch it to the mode of measuring resistance at the roughest limit. In a digital device, it is he who corresponds to the mode in which the sound indication works. Usually, the sound appears when the resistance drops to a certain threshold, which is indicated in the instructions for the device.
Step 3
If you do not have a digital readout device, or it is so expensive that you use it only in exceptional cases, so as not to spoil it, assemble a sound probe. There are a significant number of circuits for these probes - pick from them the one for which you have the parts to make.
Step 4
Light indication can also be convenient. Unlike a dial gauge or digital indicator, bright light can be seen without looking directly at the instrument, so a light probe is almost as convenient as a sound probe. Disassemble any low power LED flashlight and connect the test leads to it instead of the switch.
Step 5
To determine the integrity of the cable core, touch it with the first probe of the device from one end of the cable (be sure to completely de-energized beforehand!), And then with the second probe find the same core at the opposite end of the cable. Also check that there are no short circuits or leaks between any wires. Repeat the operation for all other cores.
Step 6
If all wires in the cable have the same color of insulation, wear a number tag on each side when making a continuity. This will avoid repeating the dialing once the cable is needed again.
