RM3 SERIES BACKREFLECTION METER
USER’S MANUAL
4.Connect the output connector of the DUT to the detector on the front of the meter. The detector must be equipped with the appropriate detector adapter. The RM meter displays the DUT absolute power output (Figure 8).
5.If a measurement is to be made at a second wavelength, repeat steps 2 to 4.
Figure 8: Measuring Absolute Power
Measuring Relative Power (Insertion Loss)
The value for relative power is the negative value of the insertion loss, for example
To make a relative power measurement of a DUT after performing the setup steps in the Setting Up the Meter for Loss and Power Measurements section:
1.Press the Power key to set the meter to Relative Power mode. In Relative Power mode, the meter displays P at the beginning of the reading and rel at the end, for example, P =
2.Press the λ key to select the wavelength at which the measurement is to be made.
3.Clean the output connector of the measurement jumper and the input connector of the DUT, and connect the two connectors. Connect the output connector of the DUT to the detector on the front of the meter. The meter displays the loss due to the DUT (Figure 9).
4.Press the λ key to measure and display the loss at another wavelength.
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