Using the Optical Spectrum Analyzer

The Traces Menus

To set up averaging

1Press the front-panel Traces key.

2 Press the Averaging.... softkey.

3Toggle averaging ON or OFF. If averaging is on, softkeys appear to select the number of measurements to be averaged.

Use the keys to select the number of measurements to be averaged. When the number of measurements taken is less than the count, the following formula is used to calculate the data:

sum of all measurements AVG = ---------------------------------------------------------------------

number of measurements

If the number of measurements is greater than or equal to the count, the following formula is used to calculate the data:

New average =

count-----------------–-----1-

⋅

last average + new-------------measurement-------------------------------------

 

count

 

count

Averaging values other than those displayed can be entered by using the numeric keypad or the knob when the Avg Count active function area is dis- played.

To set the number of points in a sweep

1Press the front-panel Traces key.

2Press the Trace Setup.... softkey. The Trace Setup panel will appear.

The Trace Setup panel

3Enter the desired sweep length in the setup panel. The minimum sweep length is three points. The maximum sweep length is 10,001 points. Refer to “To Fill In a Setup Panel” on page 3-65for information on changing and selecting items in the setup panel.

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