How do I initialize the various items?

See the following user's manuals.

1. µR10000 (4361xx): Settings and Initialization in the Operation Guide (IM04P01B01-02)
2. µR20000 (4371xx): Settings and Initialization in the Operation Guide (IM04P02B01-02)

µR10000 Recorder Operation Guide
µR20000 Recorder Operation Guide