With the firing pin block you would need to drop it hard enough for the hammer to snap before it will hit the firing pin
There is no firing pin block on an 83. What you are describing is the rebounding hammer safety. The hammer does not rest against the firing pin, and cannot be pushed forward to contact the firing pin unless the trigger is fully depressed. Watch the hammer drop upon pulling the trigger while dry firing -- it does not look like the hammer touches the firing pin at all. But, put a round in the chamber and the resulting BANG shows that the hammer is quicker than the eye.
A firing pin block locks the firing pin so as to ensure it cannot move to strike a primer unless the trigger is depressed, which disengages the lock by lifting the block.
The CA drop test, for a CZ 75 B, for example, which does have a firing pin block, makes sure the block keeps the firing pin locked and immobile upon contact with the hard surface. With the CZ 83, the test is ensuring that the impact does not result in the firing pin overcoming the enertia of the firing pin spring with enough force to ignite a primer. Obviously, a worst-case landing from a 3-ft drop is not enough to cause an ignition.