EXFO PM-1600 High-Speed Power Meter User Manual

Page 33

Acquiring Power Measurements

High-Speed Power Meter

Setting Measurement Range

To set the measurement range,
1. If necessary, select the desired channel (PM-1620).

2. Press Range until the required measurement range marker is shown at

the top of the display for the matching channel. The table shown below
displays the permitted manual ranges when the currently selected
measurement unit is dB or dBm. The power range values displayed are
typical at 1310 nm.

Note: Select a manual range in power measurement mode when the input signal

has unstable or modulated variations. This prevents ! ! ! ! ! ! ! from being
displayed upon constantly changing gain scales.

Low Range (LR)

High Range (HR)

−3.90 to 18.30 dBm (LR1)

InGaAs detector has a +9 dBm saturation limit.

−29.60 to 18.30 dBm (HR1)

−12.50 to 9.90 dBm (LR2)

−38.20 to 9.90 dBm (HR2)

−32.49 to −10.09 dBm (LR3)

−58.29 to −10.09 dBm (HR3)

−52.27 to −29.87 dBm (LR4)

−78.00 to −29.87 dBm (HR4)

−72.01 to −49.61 dBm (LR5)

—

−90.00 to −69.61 dBm (LR6)

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