Hand switch with RJ connector test method

Sometimes, there are some x ray hand switch connected with x ray machine by different RJ connectors, and we don’t know which wires control exposure ready status and which wires control exposure status, how could we know the wires definition?

Now, let me teach you the RJ connector wire definition testing method, let’s begin:

First, let us see the normal RJ connect models and pictures:

Next, prepare the testing tool– multimeter

Then, start to test:

Please look at the next section for details. Testing method of hand switch with RJ connector