What is the incorrect exposure of x ray exposure hand switch?

What is the incorrect exposure of x ray exposure hand switch? Mainly, x ray exposure hand switch is too slow. Some operators are used to put the hand brake band 2 points 2 times according to the first one exposure after press the green circle off, then light up when the second gear when press again, if the second leg of the total pressure time was controlled in about 2 seconds, it is completely correct, however, if the operator in patients with no connection position press a and the second leg, under the condition of the light bulb filament will be under the thermal state what also don’t wait, to shorten the life span of the tube.
Newheek suggests that the correct way to press the x ray exposure hand switch is: once the green circle lights up, you can press the x ray exposure hand switch 2 again and again within 1 to 2 seconds to end the exposure and hear the sound of the exposure.

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