JDS Uniphase RM3750 ユーザーズマニュアル

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.

The value for relative power is the negative value of the insertion loss, for example -31 dB
instead of 31 dB. Relative power is displayed by the meter in dB.

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 = -0.15
dB rel.

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.