Recording Power Signal Variations - EXFO USER GUIDE User Manual

7 Recording Power Signal
Variations
The Min./Max. function allows you to record the extremes of a varying
power signal when performing a continuous acquisition. For example,
it could be used to determine the stability of a light source over time or to
measure the polarization-dependent loss (PDL) of a passive component
when combined with a polarization state controller.
The function is started manually and can be stopped manually or
automatically using the timer function. Minimum (Min.) and maximum
(Max.) values can be recorded and displayed in any measurement unit
(dB, dBm, W, or W/W; see Selecting the Measurement Unit on page 28).
In logarithmic scales (dB and dBm), the difference between the maximum
and minimum values is expressed as Max.−Min. In linear scales (W and
W/W), the difference is expressed as a ratio (Min./Max.).
To use the Min./Max. function:
1. Select the Continuous acquisition rate (see Selecting the Sampling
Type on page 56).
High Speed Power Meter
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