Shimadzu Spd20a User Manual Better Online

Use the deuterium lamp’s natural emission line at 656.1 nm (visible range). In [DIAG] → WAVE CHECK, the detector auto-verifies against this line. If deviation >2 nm, service is required.

The manual lists options but doesn't explain when to use them. shimadzu spd20a user manual better

The SPD-20A user manual is hardware-focused. It barely touches on software settings. Here is the missing chapter: Use the deuterium lamp’s natural emission line at 656