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Using the Optical Spectrum Analyzer
The Traces Menus
To set up averaging
1
Press the front-panel
Traces
key.
2
Press the
Averaging....
softkey.
3
Toggle 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:
If the number of measurements is greater than or equal to the count, the fol-
lowing formula is used to calculate the data:
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
1
Press the front-panel
Traces
key.
2
Press the
Trace Setup....
softkey. The Trace Setup panel will appear.
The Trace Setup panel
3
Enter 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 3-65 for information on changing and selecting items
in the setup panel.
AVG
sum of all measurements
number of measurements
----------------------------------------------------------------------=
New average
count 1–
count
------------------------ last average
new measurement
count
--------------------------------------------------+×=
book.book Page 60 Monday, January 31, 2000 10:34 AM