Backreflection Measurements; Setting Up The Meter For Backreflection Measurements - JDS Uniphase RM3 Series User Manual

Backreflection meter

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Figure 5b: Terminating the Jumper for BR Measurement for Single-mode (980 nm only) and

3. The second termination is made after the DUT in order to obtain Br

Figure 6b: Measuring Backreflection for Single-mode (980 nm only) and Multimode

Backreflection Measurements

To prepare the meter for backreflection measurements:

1. Ensure that the meter is powered off.

2. Set the power switch to ON, and allow the meter to stabilize.

3. Press the BR key to set the meter to Backreflection mode, which is displayed as BR on the

meter.

4. Clean the output port on the front of the meter and the APC connector (green boot) of the

measurement jumper, and connect this end of the jumper to the output port. Ensure that you

are using the measurement jumper and not the calibration jumper, which is labeled as such.

The output connector of the measurement jumper is user-selected and must be compatible

with the input connector of the DUT.

For each wavelength at which measurements are to be made:

5. Press the λ key to select the required wavelength.

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Multimode

(figure 6b).

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