The sensitivity for fiber monitoring. Acceptable mode strings and value ranges are as below: low - 2dB medium - 1dB high - 0.5dB highest - 0.0025mW fixed <25 - 65535> - units of 0.0001mW relative <0.00 - 10.00> - units of dB For example, if you want to set the sensitivity to medium level, then you enter word medium Or if you want to set it to a fixed value, then you enter string fixed 1000 Or if you want to set to a relative value, then you enter string relative 1.20