Sony HKDW104 3:2 Pull-Down Cadence and 720p Conversion Output Board. It comes with a manual and operationa nd installation guide. It is for a HDW-1800 Studio Editing Recorder.
Installation Manual 1st Edition, Operation & Installation Guide 1st Edition
The Sony HKDW104 is a playback/output board for the HDW-1800 studio editing recorder, capable of either playing HDCAM footage with 3:2 pull-down cadence useful for 24p applications, as well as being able to cross-convert to 720p, which can be useful for both HD broadcast mastering and NLE ingestion.