Testing cables fitted with DIN plugs (or any other multi-pin plug) can be a time-consuming affair, since it is possible for any conductor to be open-circuit, or for a short to occur between conductors. The circuit described here will indicate if either of these fault conditions is present. The test jig consists of two 5-pin DIN sockets into which is plugged the cable to be tested. The sockets are fitted with 330 ohm resistors as shown in figure 1 and the test jig is connected between points A and B of the test circuit.
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