Rack and Power Supply Update
Due to necessary component changes, the sub-rack frame SR-20 and its associated power supply PSR-2 have been replaced by the new SR-50 and PSR-5, respectively. These new products are completely compatible with all new and existing rack cards, which are functionally interchangeable between the new SR-50 and the now obsolete SR-20. It is important to note that the sub-rack frames must be matched with the associated power supply.
We have designed this transition to be almost completely un-affecting to most users. The internal power supply and components of the PSR-5 and PSR-2 are essentially the same, so any existing PSR-2 will still be supported for repair in the extremely unlikely event that it need be.
We wanted to keep everyone updated and in the know. Thank you for your attention and understanding!