To translate a given sw and o1p to spectral limits, use
- leftlimit = o1p + sw/2
- rightlimit = o1p – sw/2
For example, o1p = 6ppm and sw = 20ppm translates into a window of -4ppm to 16ppm.
Converting a spectral window leftlimit to rightlimit to sw and o1p
- sw = leftlimit – rightlimit
- o1p = rightlimit + sw/2
For example, for a 10-190ppm window, sw=180ppm and o1p=100ppm.