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Mean correction constants and expanded uncertainties (k = 2) for the four commercial systems calibrated.
| Commercial System | Method 1 | Method 2 | |||
|---|---|---|---|---|---|
| Kλ (pm) | U (k = 2) (pm) | Kλ (pm) | U (k = 2) (pm) | ||
| sm125_unit 1 | −0.9 | ±1.1 | −0.23 (*) | ±0.64 (*) | |
| −0.83 (**) | ±0.63 (**) | ||||
| sm125_unit 2 | −0.08 (*) | ±0.59 (*) | |||
| −0.68 (**) | ±0.61 (**) | ||||
| FS42 | −0.6 | ±1.1 | |||
| sm130 | 16.4 | ±1.1 | |||
(*) 1515 nm–1550 nm; (**) 1560 nm–1570 nm.
