A JS-20DL has a single Cable ID, but multiple lasers. Each laser is numbered starting from zero. The laser furthest from the camera is Laser Index 0. In a parameters file, the lasers are specified as a decimal value for a Cable ID. Using this technique, 2.1 specifies Cable ID 2 and Laser Index 1.

You can only specify specific lasers for ScannerConfig lists and Zone lists.

You can't do it for TriggerPhase lists because synchronized scanning isn't supported for dual-laser scanners (yet). A JS-20DL will return profiles from only Laser Index 0 if used in sychronized mode. This functionality will be added after customer feedback about the best way to implement it.