FR-3/-3s 用户手册 FR-3s/FR-3/FR-3sb/FR-3b Owner's Manual FR-3s/FR-3/FR-3sb/FR-3b Quick Start FR-3s/FR-3/FR-3sb/FR-3b Ver.2 Newly Added Functuins Owner's Manual Quick Start Addendum 支持文档 FR-3/-3b QuickStart