Does anyone know what this device is/does?
Something that outputs 2 times more "cavins" than you put in?
Can you show some pictures of the insides?
Or something that reduces the signal and the user should therefore multiply readings by two. Very confusing little box.
Some kind of RF attenuator ??
Branson are/were an ultrasonic company, I wonder if cavin is their own term for measuring ultrasonic cavitation ?
I would guess a 3dB attenuator, giving a voltage output half the input, so that you can keep a meter in range while you are having a higher voltage output from whatever detector you are using. Standard instrument box, if you undo the 4 screws and look inside there will be a simple voltage divider, probably using 3 resistors, to give the attenuation and provide the required input and output impedances constant, or there will be a small ferrite autotransformer in some cases where they have a well defined operating frequency and impedances.
It's a patience test box. It tests the amount of time before the four screws come off to take a peek inside. You just might be holding the record so far!!
The patience test box has now been taken apart before it was turned on.
Anders J
Proud record holder