SRS PRS10 D-type Mating Connector (PRMC) from Stanford Research Systems stock. This simple connector allows you to test or use your PRS10, or develop a custom interface via a sub-connector integrated with the circuit board that you can breakout to your specification (pin headers, etc.)
You can source one new from SRS. You can also build your own connector using a ITT Cannon DAM11W1S sub-connector with coax insert DM53740-5000 ($50) but you would still need to replicate the mini breakout board.