DVR vs. freeweights

I originally posted this in a different section with no replies. Any info would be helpful, thank you...

I will soon be taking a police agility test which includes a bench press test. The test is to be conducted on a DVR machine.

1st question. What's a DVR machine?

2nd question. How do the weights compare to freeweights. For example, if I bench 200lbs on freeweights what does this equate to on the DVR?
 
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