EXFO FTB-5800 Chromatic Dispersion Analyzer for FTB-400 - Manual (Page 22)

Setting Up Your Chromatic Dispersion Analyzer
16 FTB-5800
Setting the Averaging Time
Setting the Averaging Time
The averaging time is the time the system spends on one specific point or
wavelength. You can either choose one of the preprogrammed values or
specify the desired averaging time with the custom option.
Note: The stronger the signal, the faster a signal-to-noise ratio (SNR) will be
reached. If your signal is weak, increase the averaging time in order to
increase the accuracy of your results. Beyond a certain time limit, however,
the accuracy you gain will be insignificant.
To select a predefined averaging time:
On the Parameters tab, use the Averaging Time dial.
To set averaging time using custom option:
1. In the Parameters tab, set the Averaging Time dial to Custom.
2. Enter a value between 1.0 s and 60.0 s in the Avg Time box. The system
will warn you if the value exceeds those limits.
Note: The averaging time displayed on the screen does not take stabilizing time
into account. The Estimated Acq. Time field will give you an idea of the
overall time your acquisition will take, including the time needed for the
system to stabilize, as this time can vary.